GES-1.0.gir

<?xml version="1.0"?>
<!-- This file was automatically generated from C sources - DO NOT EDIT!
To affect the contents of this file, edit the original C definitions,
and/or use gtk-doc annotations.  -->
<repository xmlns="http://www.gtk.org/introspection/core/1.0" xmlns:c="http://www.gtk.org/introspection/c/1.0" xmlns:glib="http://www.gtk.org/introspection/glib/1.0" version="1.2">
  <include name="GObject" version="2.0"/>
  <include name="Gio" version="2.0"/>
  <include name="Gst" version="1.0"/>
  <include name="GstPbutils" version="1.0"/>
  <include name="GstVideo" version="1.0"/>
  <package name="gst-editing-services-1.0"/>
  <c:include name="ges/ges.h"/>
  <namespace name="GES" version="1.0" shared-library="libges-1.0.so.0" c:identifier-prefixes="GES" c:symbol-prefixes="ges">
    <alias name="FrameNumber" c:type="GESFrameNumber">
      <doc xml:space="preserve">A datatype to hold a frame number.</doc>
      <type name="gint64" c:type="gint64"/>
    </alias>
    <class name="Asset" c:symbol-prefix="asset" c:type="GESAsset" parent="GObject.Object" glib:type-name="GESAsset" glib:get-type="ges_asset_get_type" glib:type-struct="AssetClass">
      <doc xml:space="preserve">A #GESAsset in the GStreamer Editing Services represents a resources
that can be used. In particular, any class that implements the
#GESExtractable interface may have some associated assets with a
corresponding #GESAsset:extractable-type, from which its objects can be
extracted using ges_asset_extract(). Some examples would be
#GESClip, #GESFormatter and #GESTrackElement.

All assets that are created within GES are stored in a cache; one per
each #GESAsset:id and #GESAsset:extractable-type pair. These assets can
be fetched, and initialized if they do not yet exist in the cache,
using ges_asset_request().

``` c
GESAsset *effect_asset;
GESEffect *effect;

// You create an asset for an effect
effect_asset = ges_asset_request (GES_TYPE_EFFECT, "agingtv", NULL);

// And now you can extract an instance of GESEffect from that asset
effect = GES_EFFECT (ges_asset_extract (effect_asset));

```

The advantage of using assets, rather than simply creating the object
directly, is that the currently loaded resources can be listed with
ges_list_assets() and displayed to an end user. For example, to show
which media files have been loaded, and a standard list of effects. In
fact, the GES library already creates assets for #GESTransitionClip and
#GESFormatter, which you can use to list all the available transition
types and supported formats.

The other advantage is that #GESAsset implements #GESMetaContainer, so
metadata can be set on the asset, with some subclasses automatically
creating this metadata on initiation.

For example, to display information about the supported formats, you
could do the following:
|[
   GList *formatter_assets, *tmp;

   //  List all  the transitions
   formatter_assets = ges_list_assets (GES_TYPE_FORMATTER);

   // Print some infos about the formatter GESAsset
   for (tmp = formatter_assets; tmp; tmp = tmp-&gt;next) {
     gst_print ("Name of the formatter: %s, file extension it produces: %s",
       ges_meta_container_get_string (
         GES_META_CONTAINER (tmp-&gt;data), GES_META_FORMATTER_NAME),
       ges_meta_container_get_string (
         GES_META_CONTAINER (tmp-&gt;data), GES_META_FORMATTER_EXTENSION));
   }

   g_list_free (transition_assets);

]|

## ID

Each asset is uniquely defined in the cache by its
#GESAsset:extractable-type and #GESAsset:id. Depending on the
#GESAsset:extractable-type, the #GESAsset:id can be used to parametrise
the creation of the object upon extraction. By default, a class that
implements #GESExtractable will only have a single associated asset,
with an #GESAsset:id set to the type name of its objects. However, this
is overwritten by some implementations, which allow a class to have
multiple associated assets. For example, for #GESTransitionClip the
#GESAsset:id will be a nickname of the #GESTransitionClip:vtype. You
should check the documentation for each extractable type to see if they
differ from the default.

Moreover, each #GESAsset:extractable-type may also associate itself
with a specific asset subclass. In such cases, when their asset is
requested, an asset of this subclass will be returned instead.

## Managing

You can use a #GESProject to easily manage the assets of a
#GESTimeline.

## Proxies

Some assets can (temporarily) act as the #GESAsset:proxy of another
asset. When the original asset is requested from the cache, the proxy
will be returned in its place. This can be useful if, say, you want
to substitute a #GESUriClipAsset corresponding to a high resolution
media file with the asset of a lower resolution stand in.

An asset may even have several proxies, the first of which will act as
its default and be returned on requests, but the others will be ordered
to take its place once it is removed. You can add a proxy to an asset,
or set its default, using ges_asset_set_proxy(), and you can remove
them with ges_asset_unproxy().</doc>
      <implements name="MetaContainer"/>
      <implements name="Gio.AsyncInitable"/>
      <implements name="Gio.Initable"/>
      <function name="needs_reload" c:identifier="ges_asset_needs_reload">
        <doc xml:space="preserve">Indicate that an existing #GESAsset in the cache should be reloaded
upon the next request. This can be used when some condition has
changed, which may require that an existing asset should be updated.
For example, if an external resource has changed or now become
available.

Note, the asset is not immediately changed, but will only actually
reload on the next call to ges_asset_request() or
ges_asset_request_async().</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the specified asset exists in the cache and could be
marked for reloading.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <parameter name="extractable_type" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset:extractable-type of the asset that
needs reloading</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
          <parameter name="id" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The #GESAsset:id of the asset asset that needs
reloading</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </function>
      <function name="request" c:identifier="ges_asset_request" throws="1" glib:async-func="request_async">
        <doc xml:space="preserve">Returns an asset with the given properties. If such an asset already
exists in the cache (it has been previously created in GES), then a
reference to the existing asset is returned. Otherwise, a newly created
asset is returned, and also added to the cache.

If the requested asset has been loaded with an error, then @error is
set, if given, and %NULL will be returned instead.

Note that the given @id may not be exactly the #GESAsset:id that is
set on the returned asset. For instance, it may be adjusted into a
standard format. Or, if a #GESExtractable type does not have its
extraction parametrised, as is the case by default, then the given @id
may be ignored entirely and the #GESAsset:id set to some standard, in
which case a %NULL @id can be given.

Similarly, the given @extractable_type may not be exactly the
#GESAsset:extractable-type that is set on the returned asset. Instead,
the actual extractable type may correspond to a subclass of the given
@extractable_type, depending on the given @id.

Moreover, depending on the given @extractable_type, the returned asset
may belong to a subclass of #GESAsset.

Finally, if the requested asset has a #GESAsset:proxy, then the proxy
that is found at the end of the chain of proxies is returned (a proxy's
proxy will take its place, and so on, unless it has no proxy).

Some asset subclasses only support asynchronous construction of its
assets, such as #GESUriClip. For such assets this method will fail, and
you should use ges_asset_request_async() instead. In the case of
#GESUriClip, you can use ges_uri_clip_asset_request_sync() if you only
want to wait for the request to finish.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">A reference to the requested
asset, or %NULL if an error occurred.</doc>
          <type name="Asset" c:type="GESAsset*"/>
        </return-value>
        <parameters>
          <parameter name="extractable_type" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset:extractable-type of the asset</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
          <parameter name="id" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The #GESAsset:id of the asset</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </function>
      <function name="request_async" c:identifier="ges_asset_request_async" glib:finish-func="request_finish" glib:sync-func="request">
        <doc xml:space="preserve">Requests an asset with the given properties asynchronously (see
ges_asset_request()). When the asset has been initialized or fetched
from the cache, the given callback function will be called. The
asset can then be retrieved in the callback using the
ges_asset_request_finish() method on the given #GAsyncResult.

Note that the source object passed to the callback will be the
#GESAsset corresponding to the request, but it may not have loaded
correctly and therefore can not be used as is. Instead,
ges_asset_request_finish() should be used to fetch a usable asset, or
indicate that an error occurred in the asset's creation.

Note that the callback will be called in the #GMainLoop running under
the same #GMainContext that ges_init() was called in. So, if you wish
the callback to be invoked outside the default #GMainContext, you can
call g_main_context_push_thread_default() in a new thread before
calling ges_init().

Example of an asynchronous asset request:
``` c
// The request callback
static void
asset_loaded_cb (GESAsset * source, GAsyncResult * res, gpointer user_data)
{
  GESAsset *asset;
  GError *error = NULL;

  asset = ges_asset_request_finish (res, &amp;error);
  if (asset) {
   gst_print ("The file: %s is usable as a GESUriClip",
       ges_asset_get_id (asset));
  } else {
   gst_print ("The file: %s is *not* usable as a GESUriClip because: %s",
       ges_asset_get_id (source), error-&gt;message);
  }

  gst_object_unref (asset);
}

// The request:
ges_asset_request_async (GES_TYPE_URI_CLIP, some_uri, NULL,
   (GAsyncReadyCallback) asset_loaded_cb, user_data);
```</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="extractable_type" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset:extractable-type of the asset</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
          <parameter name="id" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The #GESAsset:id of the asset</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="cancellable" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">An object to allow cancellation of the
asset request, or %NULL to ignore</doc>
            <type name="Gio.Cancellable" c:type="GCancellable*"/>
          </parameter>
          <parameter name="callback" transfer-ownership="none" nullable="1" allow-none="1" scope="async" closure="4">
            <doc xml:space="preserve">A function to call when the initialization is finished</doc>
            <type name="Gio.AsyncReadyCallback" c:type="GAsyncReadyCallback"/>
          </parameter>
          <parameter name="user_data" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">Data to be passed to @callback</doc>
            <type name="gpointer" c:type="gpointer"/>
          </parameter>
        </parameters>
      </function>
      <function name="request_finish" c:identifier="ges_asset_request_finish" throws="1">
        <doc xml:space="preserve">Fetches an asset requested by ges_asset_request_async(), which
finalises the request.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The requested asset, or %NULL if an error
occurred.</doc>
          <type name="Asset" c:type="GESAsset*"/>
        </return-value>
        <parameters>
          <parameter name="res" transfer-ownership="none">
            <doc xml:space="preserve">The task result to fetch the asset from</doc>
            <type name="Gio.AsyncResult" c:type="GAsyncResult*"/>
          </parameter>
        </parameters>
      </function>
      <virtual-method name="extract" invoker="extract" throws="1">
        <doc xml:space="preserve">Extracts a new #GESAsset:extractable-type object from the asset. The
#GESAsset:id of the asset may determine the properties and state of the
newly created object.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">A newly created object, or %NULL if an
error occurred.</doc>
          <type name="Extractable" c:type="GESExtractable*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset to extract an object from</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="inform_proxy">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
          <parameter name="proxy_id" transfer-ownership="none">
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="proxied">
        <doc xml:space="preserve">Deprecated: 1.18: This vmethod is no longer called.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
          <parameter name="proxy" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="request_id_update">
        <doc xml:space="preserve">A method called by a #GESProject when an asset has
failed to load. @error is the error given by
ges_asset_request_finish (). Returns: %TRUE if a new id for @self was
passed to @proposed_new_id.</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
          <parameter name="proposed_new_id" transfer-ownership="none">
            <type name="utf8" c:type="gchar**"/>
          </parameter>
          <parameter name="error" transfer-ownership="none">
            <type name="GLib.Error" c:type="GError*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="start_loading" throws="1">
        <doc xml:space="preserve">A method to be called when an asset is being requested
asynchronously. This will be after the properties of the asset have
been set, so it is tasked with (re)loading the 'state' of the asset.
The return value should indicated whether the loading is complete, is
carrying on asynchronously, or an error occurred. The default
implementation will simply return that loading is already complete (the
asset is already in a usable state after the properties have been set).</doc>
        <return-value transfer-ownership="none">
          <type name="AssetLoadingReturn" c:type="GESAssetLoadingReturn"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <method name="extract" c:identifier="ges_asset_extract" throws="1">
        <doc xml:space="preserve">Extracts a new #GESAsset:extractable-type object from the asset. The
#GESAsset:id of the asset may determine the properties and state of the
newly created object.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">A newly created object, or %NULL if an
error occurred.</doc>
          <type name="Extractable" c:type="GESExtractable*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset to extract an object from</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_error" c:identifier="ges_asset_get_error" version="1.8">
        <doc xml:space="preserve">Retrieve the error that was set on the asset when it was loaded.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The error set on @asset, or
%NULL if no error occurred when @asset was loaded.</doc>
          <type name="GLib.Error" c:type="GError*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_extractable_type" c:identifier="ges_asset_get_extractable_type" glib:get-property="extractable-type">
        <doc xml:space="preserve">Gets the #GESAsset:extractable-type of the asset.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The extractable type of @self.</doc>
          <type name="GType" c:type="GType"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_id" c:identifier="ges_asset_get_id" glib:get-property="id">
        <doc xml:space="preserve">Gets the #GESAsset:id of the asset.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The ID of @self.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_proxy" c:identifier="ges_asset_get_proxy" glib:get-property="proxy">
        <doc xml:space="preserve">Gets the default #GESAsset:proxy of the asset.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The default proxy of @asset.</doc>
          <type name="Asset" c:type="GESAsset*"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_proxy_target" c:identifier="ges_asset_get_proxy_target" glib:get-property="proxy-target">
        <doc xml:space="preserve">Gets the #GESAsset:proxy-target of the asset.

Note that the proxy target may have loaded with an error, so you should
call ges_asset_get_error() on the returned target.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The asset that @proxy is a proxy
of.</doc>
          <type name="Asset" c:type="GESAsset*"/>
        </return-value>
        <parameters>
          <instance-parameter name="proxy" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="list_proxies" c:identifier="ges_asset_list_proxies">
        <doc xml:space="preserve">Get all the proxies that the asset has. The first item of the list will
be the default #GESAsset:proxy. The second will be the proxy that is
'next in line' to be default, and so on.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The list of proxies
that @asset has.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Asset"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_proxy" c:identifier="ges_asset_set_proxy" glib:set-property="proxy">
        <doc xml:space="preserve">Sets the #GESAsset:proxy for the asset.

If @proxy is among the existing proxies of the asset (see
ges_asset_list_proxies()) it will be moved to become the default
proxy. Otherwise, if @proxy is not %NULL, it will be added to the list
of proxies, as the new default. The previous default proxy will become
'next in line' for if the new one is removed, and so on. As such, this
will **not** actually remove the previous default proxy (use
ges_asset_unproxy() for that).

Note that an asset can only act as a proxy for one other asset.

As a special case, if @proxy is %NULL, then this method will actually
remove **all** proxies from the asset.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @proxy was successfully set as the default for
@asset.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset to proxy</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
          <parameter name="proxy" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A new default proxy for @asset</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </method>
      <method name="unproxy" c:identifier="ges_asset_unproxy">
        <doc xml:space="preserve">Removes the proxy from the available list of proxies for the asset. If
the given proxy is the default proxy of the list, then the next proxy
in the available list (see ges_asset_list_proxies()) will become the
default. If there are no other proxies, then the asset will no longer
have a default #GESAsset:proxy.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @proxy was successfully removed from @asset's proxy
list.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset to no longer proxy with @proxy</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </instance-parameter>
          <parameter name="proxy" transfer-ownership="none">
            <doc xml:space="preserve">An existing proxy of @asset</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </method>
      <property name="extractable-type" writable="1" construct-only="1" transfer-ownership="none" getter="get_extractable_type">
        <doc xml:space="preserve">The #GESExtractable object type that can be extracted from the asset.</doc>
        <type name="GType" c:type="GType"/>
      </property>
      <property name="id" writable="1" construct-only="1" transfer-ownership="none" getter="get_id" default-value="NULL">
        <doc xml:space="preserve">The ID of the asset. This should be unique amongst all assets with
the same #GESAsset:extractable-type. Depending on the associated
#GESExtractable implementation, this id may convey some information
about the #GObject that should be extracted. Note that, as such, the
ID will have an expected format, and you can not choose this value
arbitrarily. By default, this will be set to the type name of the
#GESAsset:extractable-type, but you should check the documentation
of the extractable type to see whether they differ from the
default behaviour.</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <property name="proxy" writable="1" transfer-ownership="none" setter="set_proxy" getter="get_proxy">
        <doc xml:space="preserve">The default proxy for this asset, or %NULL if it has no proxy. A
proxy will act as a substitute for the original asset when the
original is requested (see ges_asset_request()).

Setting this property will not usually remove the existing proxy, but
will replace it as the default (see ges_asset_set_proxy()).</doc>
        <type name="Asset"/>
      </property>
      <property name="proxy-target" transfer-ownership="none" getter="get_proxy_target">
        <doc xml:space="preserve">The asset that this asset is a proxy for, or %NULL if it is not a
proxy for another asset.

Note that even if this asset is acting as a proxy for another asset,
but this asset is not the default #GESAsset:proxy, then @proxy-target
will *still* point to this other asset. So you should check the
#GESAsset:proxy property of @target-proxy before assuming it is the
current default proxy for the target.

Note that the #GObject::notify for this property is emitted after
the #GESAsset:proxy #GObject::notify for the corresponding (if any)
asset it is now the proxy of/no longer the proxy of.</doc>
        <type name="Asset"/>
      </property>
      <field name="parent">
        <type name="GObject.Object" c:type="GObject"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="AssetPrivate" c:type="GESAssetPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="AssetClass" c:type="GESAssetClass" glib:is-gtype-struct-for="Asset">
      <field name="parent">
        <type name="GObject.ObjectClass" c:type="GObjectClass"/>
      </field>
      <field name="start_loading">
        <doc xml:space="preserve">A method to be called when an asset is being requested
asynchronously. This will be after the properties of the asset have
been set, so it is tasked with (re)loading the 'state' of the asset.
The return value should indicated whether the loading is complete, is
carrying on asynchronously, or an error occurred. The default
implementation will simply return that loading is already complete (the
asset is already in a usable state after the properties have been set).</doc>
        <callback name="start_loading" throws="1">
          <return-value transfer-ownership="none">
            <type name="AssetLoadingReturn" c:type="GESAssetLoadingReturn"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="extract">
        <doc xml:space="preserve">A method that returns a new object of the asset's
#GESAsset:extractable-type, or %NULL if an error occurs. The default
implementation will fetch the properties of the #GESExtractable from
its get_parameters_from_id() class method and set them on a new
#GESAsset:extractable-type #GObject, which is returned.</doc>
        <callback name="extract" throws="1">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">A newly created object, or %NULL if an
error occurred.</doc>
            <type name="Extractable" c:type="GESExtractable*"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The #GESAsset to extract an object from</doc>
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="inform_proxy">
        <callback name="inform_proxy">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
            <parameter name="proxy_id" transfer-ownership="none">
              <type name="utf8" c:type="const gchar*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="proxied">
        <doc xml:space="preserve">Deprecated: 1.18: This vmethod is no longer called.</doc>
        <callback name="proxied">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
            <parameter name="proxy" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="request_id_update">
        <doc xml:space="preserve">A method called by a #GESProject when an asset has
failed to load. @error is the error given by
ges_asset_request_finish (). Returns: %TRUE if a new id for @self was
passed to @proposed_new_id.</doc>
        <callback name="request_id_update">
          <return-value transfer-ownership="none">
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
            <parameter name="proposed_new_id" transfer-ownership="none">
              <type name="utf8" c:type="gchar**"/>
            </parameter>
            <parameter name="error" transfer-ownership="none">
              <type name="GLib.Error" c:type="GError*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <enumeration name="AssetLoadingReturn" c:type="GESAssetLoadingReturn">
      <member name="error" value="0" c:identifier="GES_ASSET_LOADING_ERROR">
        <doc xml:space="preserve">Indicates that an error occurred</doc>
      </member>
      <member name="async" value="1" c:identifier="GES_ASSET_LOADING_ASYNC">
        <doc xml:space="preserve">Indicates that the loading is being performed
asynchronously</doc>
      </member>
      <member name="ok" value="2" c:identifier="GES_ASSET_LOADING_OK">
        <doc xml:space="preserve">Indicates that the loading is complete, without
error</doc>
      </member>
    </enumeration>
    <record name="AssetPrivate" c:type="GESAssetPrivate" disguised="1" opaque="1"/>
    <class name="AudioSource" c:symbol-prefix="audio_source" c:type="GESAudioSource" parent="Source" abstract="1" glib:type-name="GESAudioSource" glib:get-type="ges_audio_source_get_type" glib:type-struct="AudioSourceClass">
      <doc xml:space="preserve">## Children Properties

You can use the following children properties through the
#ges_track_element_set_child_property and alike set of methods:

- #gdouble `volume`: volume factor, 1.0=100%.
- #gboolean `mute`: mute channel.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <field name="parent" readable="0" private="1">
        <type name="Source" c:type="GESSource"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="AudioSourcePrivate" c:type="GESAudioSourcePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="AudioSourceClass" c:type="GESAudioSourceClass" glib:is-gtype-struct-for="AudioSource">
      <field name="parent_class" readable="0" private="1">
        <type name="SourceClass" c:type="GESSourceClass"/>
      </field>
      <field name="create_source" introspectable="0">
        <callback name="create_source" introspectable="0">
          <return-value>
            <type name="Gst.Element" c:type="GstElement*"/>
          </return-value>
          <parameters>
            <parameter name="object" transfer-ownership="none">
              <type name="TrackElement" c:type="GESTrackElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="AudioSourcePrivate" c:type="GESAudioSourcePrivate" disguised="1" opaque="1"/>
    <class name="AudioTestSource" c:symbol-prefix="audio_test_source" c:type="GESAudioTestSource" parent="AudioSource" glib:type-name="GESAudioTestSource" glib:get-type="ges_audio_test_source_get_type" glib:type-struct="AudioTestSourceClass">
      <doc xml:space="preserve">Outputs a test audio stream using audiotestsrc. The default property values
output silence. Useful for testing pipelines, or to fill gaps in an audio
track.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <method name="get_freq" c:identifier="ges_audio_test_source_get_freq">
        <doc xml:space="preserve">Get the current frequency of @self.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The current frequency of @self.</doc>
          <type name="gdouble" c:type="double"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESAudioTestSource</doc>
            <type name="AudioTestSource" c:type="GESAudioTestSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_volume" c:identifier="ges_audio_test_source_get_volume">
        <doc xml:space="preserve">Get the current volume of @self.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The current volume of @self</doc>
          <type name="gdouble" c:type="double"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESAudioTestSource</doc>
            <type name="AudioTestSource" c:type="GESAudioTestSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_freq" c:identifier="ges_audio_test_source_set_freq">
        <doc xml:space="preserve">Lets you set the frequency applied on the track element</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESAudioTestSource</doc>
            <type name="AudioTestSource" c:type="GESAudioTestSource*"/>
          </instance-parameter>
          <parameter name="freq" transfer-ownership="none">
            <doc xml:space="preserve">The frequency you want to apply on @self</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_volume" c:identifier="ges_audio_test_source_set_volume">
        <doc xml:space="preserve">Sets the volume of the test audio signal.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESAudioTestSource</doc>
            <type name="AudioTestSource" c:type="GESAudioTestSource*"/>
          </instance-parameter>
          <parameter name="volume" transfer-ownership="none">
            <doc xml:space="preserve">The volume you want to apply on @self</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <field name="parent">
        <type name="AudioSource" c:type="GESAudioSource"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="AudioTestSourcePrivate" c:type="GESAudioTestSourcePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="AudioTestSourceClass" c:type="GESAudioTestSourceClass" glib:is-gtype-struct-for="AudioTestSource">
      <field name="parent_class" readable="0" private="1">
        <type name="AudioSourceClass" c:type="GESAudioSourceClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="AudioTestSourcePrivate" c:type="GESAudioTestSourcePrivate" disguised="1" opaque="1"/>
    <class name="AudioTrack" c:symbol-prefix="audio_track" c:type="GESAudioTrack" parent="Track" glib:type-name="GESAudioTrack" glib:get-type="ges_audio_track_get_type" glib:type-struct="AudioTrackClass">
      <doc xml:space="preserve">A #GESAudioTrack is a default audio #GESTrack, with a
#GES_TRACK_TYPE_AUDIO #GESTrack:track-type and "audio/x-raw(ANY)"
#GESTrack:caps.

By default, an audio track will have its #GESTrack:restriction-caps
set to "audio/x-raw" with the following properties:

- format: "S32LE"
- channels: 2
- rate: 44100
- layout: "interleaved"

These fields are needed for negotiation purposes, but you can change
their values if you wish. It is advised that you do so using
ges_track_update_restriction_caps() with new values for the fields you
wish to change, and any additional fields you may want to add. Unlike
using ges_track_set_restriction_caps(), this will ensure that these
default fields will at least have some value set.</doc>
      <implements name="MetaContainer"/>
      <implements name="Gst.ChildProxy"/>
      <constructor name="new" c:identifier="ges_audio_track_new">
        <doc xml:space="preserve">Creates a new audio track, with a #GES_TRACK_TYPE_AUDIO
#GESTrack:track-type, "audio/x-raw(ANY)" #GESTrack:caps, and
"audio/x-raw" #GESTrack:restriction-caps with the properties:

- format: "S32LE"
- channels: 2
- rate: 44100
- layout: "interleaved"

You should use ges_track_update_restriction_caps() if you wish to
modify these fields, or add additional ones.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The newly created audio track.</doc>
          <type name="AudioTrack" c:type="GESAudioTrack*"/>
        </return-value>
      </constructor>
      <field name="parent_instance">
        <type name="Track" c:type="GESTrack"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="AudioTrackPrivate" c:type="GESAudioTrackPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="AudioTrackClass" c:type="GESAudioTrackClass" glib:is-gtype-struct-for="AudioTrack">
      <field name="parent_class">
        <type name="TrackClass" c:type="GESTrackClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="AudioTrackPrivate" c:type="GESAudioTrackPrivate" disguised="1" opaque="1"/>
    <class name="AudioTransition" c:symbol-prefix="audio_transition" c:type="GESAudioTransition" parent="Transition" glib:type-name="GESAudioTransition" glib:get-type="ges_audio_transition_get_type" glib:type-struct="AudioTransitionClass">
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_audio_transition_new" deprecated="1" deprecated-version="1.18">
        <doc xml:space="preserve">Creates a new #GESAudioTransition.</doc>
        <doc-deprecated xml:space="preserve">This should never be called by applications as this will
be created by clips.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The newly created #GESAudioTransition.</doc>
          <type name="AudioTransition" c:type="GESAudioTransition*"/>
        </return-value>
      </constructor>
      <field name="parent">
        <type name="Transition" c:type="GESTransition"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="AudioTransitionPrivate" c:type="GESAudioTransitionPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="AudioTransitionClass" c:type="GESAudioTransitionClass" glib:is-gtype-struct-for="AudioTransition">
      <field name="parent_class">
        <type name="TransitionClass" c:type="GESTransitionClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="AudioTransitionPrivate" c:type="GESAudioTransitionPrivate" disguised="1" opaque="1"/>
    <class name="AudioUriSource" c:symbol-prefix="audio_uri_source" c:type="GESAudioUriSource" parent="AudioSource" glib:type-name="GESAudioUriSource" glib:get-type="ges_audio_uri_source_get_type" glib:type-struct="AudioUriSourceClass">
      <doc xml:space="preserve">### Children Properties

 {{ libs/GESVideoUriSource-children-props.md }}</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <property name="uri" writable="1" construct-only="1" transfer-ownership="none" default-value="NULL">
        <doc xml:space="preserve">The location of the file/resource to use.</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <field name="parent" readable="0" private="1">
        <type name="AudioSource" c:type="GESAudioSource"/>
      </field>
      <field name="uri" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="UriSource" c:type="GESUriSource*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="AudioUriSourceClass" c:type="GESAudioUriSourceClass" glib:is-gtype-struct-for="AudioUriSource">
      <field name="parent_class" readable="0" private="1">
        <type name="AudioSourceClass" c:type="GESAudioSourceClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="AudioUriSourcePrivate" c:type="GESAudioUriSourcePrivate" disguised="1" opaque="1"/>
    <class name="BaseEffect" c:symbol-prefix="base_effect" c:type="GESBaseEffect" parent="Operation" abstract="1" glib:type-name="GESBaseEffect" glib:get-type="ges_base_effect_get_type" glib:type-struct="BaseEffectClass">
      <doc xml:space="preserve">A #GESBaseEffect is some operation that applies an effect to the data
it receives.

## Time Effects

Some operations will change the timing of the stream data they receive
in some way. In particular, the #GstElement that they wrap could alter
the times of the segment they receive in a #GST_EVENT_SEGMENT event,
or the times of a seek they receive in a #GST_EVENT_SEEK event. Such
operations would be considered time effects since they translate the
times they receive on their source to different times at their sink,
and vis versa. This introduces two sets of time coordinates for the
event: (internal) sink coordinates and (internal) source coordinates,
where segment times are translated from the sink coordinates to the
source coordinates, and seek times are translated from the source
coordinates to the sink coordinates.

If you use such an effect in GES, you will need to inform GES of the
properties that control the timing with
ges_base_effect_register_time_property(), and the effect's timing
behaviour using ges_base_effect_set_time_translation_funcs().

Note that a time effect should not have its
#GESTrackElement:has-internal-source set to %TRUE.

In addition, note that GES only *fully* supports time effects whose
mapping from the source to sink coordinates (those applied to seeks)
obeys:

+ Maps the time `0` to `0`. So initial time-shifting effects are
  excluded.
+ Is monotonically increasing. So reversing effects, and effects that
  jump backwards in the stream are excluded.
+ Can handle a reasonable #GstClockTime, relative to the project. So
  this would exclude a time effect with an extremely large speed-up
  that would cause the converted #GstClockTime seeks to overflow.
+ Is 'continuously reversible'. This essentially means that for every
  time in the sink coordinates, we can, to 'good enough' accuracy,
  calculate the corresponding time in the source coordinates. Moreover,
  this should correspond to how segment times are translated from
  sink to source.
+ Only depends on the registered time properties, rather than the
  state of the #GstElement or the data it receives. This would exclude,
  say, an effect that would speedup if there is more red in the image
  it receives.

Note that a constant-rate-change effect that is not extremely fast or
slow would satisfy these conditions. For such effects, you may wish to
use ges_effect_class_register_rate_property().</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <method name="is_time_effect" c:identifier="ges_base_effect_is_time_effect" version="1.18">
        <doc xml:space="preserve">Get whether the effect is considered a time effect or not. An effect
with registered time properties or set translation functions is
considered a time effect.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @effect is considered a time effect.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">A #GESBaseEffect</doc>
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="register_time_property" c:identifier="ges_base_effect_register_time_property" version="1.18">
        <doc xml:space="preserve">Register a child property of the effect as a property that, when set,
can change the timing of its input data. The child property should be
specified as in ges_timeline_element_lookup_child().

You should also set the corresponding time translation using
ges_base_effect_set_time_translation_funcs().

Note that @effect must not be part of a clip, nor can it have
#GESTrackElement:has-internal-source set to %TRUE.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the child property was found and newly registered.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">A #GESBaseEffect</doc>
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </instance-parameter>
          <parameter name="child_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the child property to register as
a time property</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_time_translation_funcs" c:identifier="ges_base_effect_set_time_translation_funcs" version="1.18">
        <doc xml:space="preserve">Set the time translation query functions for the time effect. If an
effect is a time effect, it will have two sets of coordinates: one
at its sink and one at its source. The given functions should be able
to translate between these two sets of coordinates. More specifically,
@source_to_sink_func should *emulate* how the corresponding #GstElement
would translate the #GstSegment @time field, and @sink_to_source_func
should emulate how the corresponding #GstElement would translate the
seek query @start and @stop values, as used in gst_element_seek(). As
such, @sink_to_source_func should act as an approximate reverse of
@source_to_sink_func.

Note, these functions will be passed a table of time properties, as
registered in ges_base_effect_register_time_property(), and their
values. The functions should emulate what the translation *would* be
*if* the time properties were set to the given values. They should not
use the currently set values.

Note that @effect must not be part of a clip, nor can it have
#GESTrackElement:has-internal-source set to %TRUE.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the translation functions were set.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">A #GESBaseEffect</doc>
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </instance-parameter>
          <parameter name="source_to_sink_func" transfer-ownership="none" nullable="1" allow-none="1" scope="notified">
            <doc xml:space="preserve">The function to use
for querying how a time is translated from the source coordinates to
the sink coordinates of @effect</doc>
            <type name="BaseEffectTimeTranslationFunc" c:type="GESBaseEffectTimeTranslationFunc"/>
          </parameter>
          <parameter name="sink_to_source_func" transfer-ownership="none" nullable="1" allow-none="1" scope="notified" closure="2" destroy="3">
            <doc xml:space="preserve">The function to use
for querying how a time is translated from the sink coordinates to the
source coordinates of @effect</doc>
            <type name="BaseEffectTimeTranslationFunc" c:type="GESBaseEffectTimeTranslationFunc"/>
          </parameter>
          <parameter name="user_data" transfer-ownership="none" nullable="1" allow-none="1" scope="notified">
            <doc xml:space="preserve">Data to pass to both @source_to_sink_func and
@sink_to_source_func</doc>
            <type name="gpointer" c:type="gpointer"/>
          </parameter>
          <parameter name="destroy" transfer-ownership="none" nullable="1" allow-none="1" scope="async" destroy="2">
            <doc xml:space="preserve">Method to call to destroy
@user_data, or %NULL</doc>
            <type name="GLib.DestroyNotify" c:type="GDestroyNotify"/>
          </parameter>
        </parameters>
      </method>
      <field name="parent" readable="0" private="1">
        <type name="Operation" c:type="GESOperation"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="BaseEffectPrivate" c:type="GESBaseEffectPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="BaseEffectClass" c:type="GESBaseEffectClass" glib:is-gtype-struct-for="BaseEffect">
      <field name="parent_class" readable="0" private="1">
        <doc xml:space="preserve">parent class</doc>
        <type name="OperationClass" c:type="GESOperationClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <class name="BaseEffectClip" c:symbol-prefix="base_effect_clip" c:type="GESBaseEffectClip" parent="OperationClip" abstract="1" glib:type-name="GESBaseEffectClip" glib:get-type="ges_base_effect_clip_get_type" glib:type-struct="BaseEffectClipClass">
      <doc xml:space="preserve">#GESBaseEffectClip-s are clips whose core elements are
#GESBaseEffect-s.

## Effects

#GESBaseEffectClip-s can have **additional** #GESBaseEffect-s added as
non-core elements. These additional effects are applied to the output
of the core effects of the clip that they share a #GESTrack with. See
#GESClip for how to add and move these effects from the clip.

Note that you cannot add time effects to #GESBaseEffectClip, neither
as core children, nor as additional effects.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <field name="parent" readable="0" private="1">
        <type name="OperationClip" c:type="GESOperationClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="BaseEffectClipPrivate" c:type="GESBaseEffectClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="BaseEffectClipClass" c:type="GESBaseEffectClipClass" glib:is-gtype-struct-for="BaseEffectClip">
      <field name="parent_class" readable="0" private="1">
        <type name="OperationClipClass" c:type="GESOperationClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="BaseEffectClipPrivate" c:type="GESBaseEffectClipPrivate" disguised="1" opaque="1"/>
    <record name="BaseEffectPrivate" c:type="GESBaseEffectPrivate" disguised="1" opaque="1"/>
    <callback name="BaseEffectTimeTranslationFunc" c:type="GESBaseEffectTimeTranslationFunc" version="1.18">
      <doc xml:space="preserve">A function for querying how an effect would translate a time if it had
the given child property values set. The keys for @time_properties will
be the same string that was passed to
ges_base_effect_register_time_property(), the values will be #GValue*
values of the corresponding child properties. You should always use the
values given in @time_properties before using the currently set values.</doc>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">The translated time.</doc>
        <type name="Gst.ClockTime" c:type="GstClockTime"/>
      </return-value>
      <parameters>
        <parameter name="effect" transfer-ownership="none">
          <doc xml:space="preserve">The #GESBaseEffect that is doing the time translation</doc>
          <type name="BaseEffect" c:type="GESBaseEffect*"/>
        </parameter>
        <parameter name="time" transfer-ownership="none">
          <doc xml:space="preserve">The #GstClockTime to translation</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </parameter>
        <parameter name="time_property_values" transfer-ownership="none">
          <doc xml:space="preserve">A table of child
property name/value pairs</doc>
          <type name="GLib.HashTable" c:type="GHashTable*">
            <type name="utf8"/>
            <type name="GObject.Value"/>
          </type>
        </parameter>
        <parameter name="user_data" transfer-ownership="none" nullable="1" allow-none="1" closure="3">
          <doc xml:space="preserve">Data passed to ges_base_effect_set_time_translation_funcs()</doc>
          <type name="gpointer" c:type="gpointer"/>
        </parameter>
      </parameters>
    </callback>
    <class name="BaseTransitionClip" c:symbol-prefix="base_transition_clip" c:type="GESBaseTransitionClip" parent="OperationClip" abstract="1" glib:type-name="GESBaseTransitionClip" glib:get-type="ges_base_transition_clip_get_type" glib:type-struct="BaseTransitionClipClass">
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <field name="parent" readable="0" private="1">
        <type name="OperationClip" c:type="GESOperationClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="BaseTransitionClipPrivate" c:type="GESBaseTransitionClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="BaseTransitionClipClass" c:type="GESBaseTransitionClipClass" glib:is-gtype-struct-for="BaseTransitionClip">
      <field name="parent_class" readable="0" private="1">
        <type name="OperationClipClass" c:type="GESOperationClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="BaseTransitionClipPrivate" c:type="GESBaseTransitionClipPrivate" disguised="1" opaque="1"/>
    <class name="BaseXmlFormatter" c:symbol-prefix="base_xml_formatter" c:type="GESBaseXmlFormatter" parent="Formatter" abstract="1" glib:type-name="GESBaseXmlFormatter" glib:get-type="ges_base_xml_formatter_get_type" glib:type-struct="BaseXmlFormatterClass">
      <implements name="Extractable"/>
      <field name="parent">
        <type name="Formatter" c:type="GESFormatter"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="BaseXmlFormatterPrivate" c:type="GESBaseXmlFormatterPrivate*"/>
      </field>
      <field name="xmlcontent" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="3">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="BaseXmlFormatterClass" c:type="GESBaseXmlFormatterClass" glib:is-gtype-struct-for="BaseXmlFormatter">
      <field name="parent">
        <type name="FormatterClass" c:type="GESFormatterClass"/>
      </field>
      <field name="content_parser">
        <type name="GLib.MarkupParser" c:type="GMarkupParser"/>
      </field>
      <field name="save">
        <callback name="save" throws="1">
          <return-value transfer-ownership="full">
            <type name="GLib.String" c:type="GString*"/>
          </return-value>
          <parameters>
            <parameter name="formatter" transfer-ownership="none">
              <type name="Formatter" c:type="GESFormatter*"/>
            </parameter>
            <parameter name="timeline" transfer-ownership="none">
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="BaseXmlFormatterPrivate" c:type="GESBaseXmlFormatterPrivate" disguised="1" opaque="1"/>
    <function-macro name="CLIP_CLASS_CAN_ADD_EFFECTS" c:identifier="GES_CLIP_CLASS_CAN_ADD_EFFECTS" introspectable="0">
      <doc xml:space="preserve">Whether the class allows for the user to add additional non-core
#GESBaseEffect-s to clips from this class.</doc>
      <parameters>
        <parameter name="klass">
          <doc xml:space="preserve">A #GESClipClass</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="CONTAINER_CHILDREN" c:identifier="GES_CONTAINER_CHILDREN" introspectable="0">
      <doc xml:space="preserve">The #GList containing the children of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">a #GESContainer</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="CONTAINER_HEIGHT" c:identifier="GES_CONTAINER_HEIGHT" introspectable="0">
      <doc xml:space="preserve">The #GESContainer:height of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">a #GESContainer</doc>
        </parameter>
      </parameters>
    </function-macro>
    <enumeration name="ChildrenControlMode" c:type="GESChildrenControlMode">
      <doc xml:space="preserve">To be used by subclasses only. This indicate how to handle a change in
a child.</doc>
      <member name="update" value="0" c:identifier="GES_CHILDREN_UPDATE">
      </member>
      <member name="ignore_notifies" value="1" c:identifier="GES_CHILDREN_IGNORE_NOTIFIES">
      </member>
      <member name="update_offsets" value="2" c:identifier="GES_CHILDREN_UPDATE_OFFSETS">
      </member>
      <member name="update_all_values" value="3" c:identifier="GES_CHILDREN_UPDATE_ALL_VALUES">
      </member>
      <member name="last" value="4" c:identifier="GES_CHILDREN_LAST">
      </member>
    </enumeration>
    <class name="Clip" c:symbol-prefix="clip" c:type="GESClip" parent="Container" abstract="1" glib:type-name="GESClip" glib:get-type="ges_clip_get_type" glib:type-struct="ClipClass">
      <doc xml:space="preserve">#GESClip-s are the core objects of a #GESLayer. Each clip may exist in
a single layer but may control several #GESTrackElement-s that span
several #GESTrack-s. A clip will ensure that all its children share the
same #GESTimelineElement:start and #GESTimelineElement:duration in
their tracks, which will match the #GESTimelineElement:start and
#GESTimelineElement:duration of the clip itself. Therefore, changing
the timing of the clip will change the timing of the children, and a
change in the timing of a child will change the timing of the clip and
subsequently all its siblings. As such, a clip can be treated as a
singular object in its layer.

For most uses of a #GESTimeline, it is often sufficient to only
interact with #GESClip-s directly, which will take care of creating and
organising the elements of the timeline's tracks.

## Core Children

In more detail, clips will usually have some *core* #GESTrackElement
children, which are created by the clip when it is added to a layer in
a timeline. The type and form of these core children will depend on the
clip's subclass. You can use ges_track_element_is_core() to determine
whether a track element is considered such a core track element. Note,
if a core track element is part of a clip, it will always be treated as
a core *child* of the clip. You can connect to the
#GESContainer::child-added signal to be notified of their creation.

When a child is added to a clip, the timeline will select its tracks
using #GESTimeline::select-tracks-for-object. Note that it may be the
case that the child will still have no set #GESTrackElement:track
after this process. For example, if the timeline does not have a track
of the corresponding #GESTrack:track-type. A clip can safely contain
such children, which may have their track set later, although they will
play no functioning role in the timeline in the meantime.

If a clip may create track elements with various
#GESTrackElement:track-type(s), such as a #GESUriClip, but you only
want it to create a subset of these types, you should set the
#GESClip:supported-formats of the clip to the subset of types. This
should be done *before* adding the clip to a layer.

If a clip will produce several core elements of the same
#GESTrackElement:track-type, you should connect to the timeline's
#GESTimeline::select-tracks-for-object signal to coordinate which
tracks each element should land in. Note, no two core children within a
clip can share the same #GESTrack, so you should not select the same
track for two separate core children. Provided you stick to this rule,
it is still safe to select several tracks for the same core child, the
core child will be copied into the additional tracks. You can manually
add the child to more tracks later using ges_clip_add_child_to_track().
If you do not wish to use a core child, you can always select no track.

The #GESTimelineElement:in-point of the clip will control the
#GESTimelineElement:in-point of its core children to be the same
value if their #GESTrackElement:has-internal-source is set to %TRUE.

The #GESTimelineElement:max-duration of the clip is the minimum
#GESTimelineElement:max-duration of its core children. If you set its
value to anything other than its current value, this will also set the
#GESTimelineElement:max-duration of all its core children to the same
value if their #GESTrackElement:has-internal-source is set to %TRUE.
As a special case, whilst a clip does not yet have any core children,
its #GESTimelineElement:max-duration may be set to indicate what its
value will be once they are created.

## Effects

Some subclasses (#GESSourceClip and #GESBaseEffectClip) may also allow
their objects to have additional non-core #GESBaseEffect-s elements as
children. These are additional effects that are applied to the output
data of the core elements. They can be added to the clip using
ges_clip_add_top_effect(), which will take care of adding the effect to
the timeline's tracks. The new effect will be placed between the clip's
core track elements and its other effects. As such, the newly added
effect will be applied to any source data **before** the other existing
effects. You can change the ordering of effects using
ges_clip_set_top_effect_index().

Tracks are selected for top effects in the same way as core children.
If you add a top effect to a clip before it is part of a timeline, and
later add the clip to a timeline, the track selection for the top
effects will occur just after the track selection for the core
children. If you add a top effect to a clip that is already part of a
timeline, the track selection will occur immediately. Since a top
effect must be applied on top of a core child, if you use
#GESTimeline::select-tracks-for-object, you should ensure that the
added effects are destined for a #GESTrack that already contains a core
child.

In addition, if the core child in the track is not
#GESTrackElement:active, then neither can any of its effects be
#GESTrackElement:active. Therefore, if a core child is made in-active,
all of the additional effects in the same track will also become
in-active. Similarly, if an effect is set to be active, then the core
child will also become active, but other effects will be left alone.
Finally, if an active effect is added to the track of an in-active core
child, it will become in-active as well. Note, in contrast, setting a
core child to be active, or an effect to be in-active will *not* change
the other children in the same track.

### Time Effects

Some effects also change the timing of their data (see #GESBaseEffect
for what counts as a time effect). Note that a #GESBaseEffectClip will
refuse time effects, but a #GESSource will allow them.

When added to a clip, time effects may adjust the timing of other
children in the same track. Similarly, when changing the order of
effects, making them (in)-active, setting their time property values
or removing time effects. These can cause the #GESClip:duration-limit
to change in value. However, if such an operation would ever cause the
#GESTimelineElement:duration to shrink such that a clip's #GESSource is
totally overlapped in the timeline, the operation would be prevented.
Note that the same can happen when adding non-time effects with a
finite #GESTimelineElement:max-duration.

Therefore, when working with time effects, you should -- more so than
usual -- not assume that setting the properties of the clip's children
will succeed. In particular, you should use
ges_timeline_element_set_child_property_full() when setting the time
properties.

If you wish to preserve the *internal* duration of a source in a clip
during these time effect operations, you can do something like the
following.

```c
void
do_time_effect_change (GESClip * clip)
{
  GList *tmp, *children;
  GESTrackElement *source;
  GstClockTime source_outpoint;
  GstClockTime new_end;
  GError *error = NULL;

  // choose some active source in a track to preserve the internal
  // duration of
  source = ges_clip_get_track_element (clip, NULL, GES_TYPE_SOURCE);

  // note its current internal end time
  source_outpoint = ges_clip_get_internal_time_from_timeline_time (
        clip, source, GES_TIMELINE_ELEMENT_END (clip), NULL);

  // handle invalid out-point

  // stop the children's control sources from clamping when their
  // out-point changes with a change in the time effects
  children = ges_container_get_children (GES_CONTAINER (clip), FALSE);

  for (tmp = children; tmp; tmp = tmp-&gt;next)
    ges_track_element_set_auto_clamp_control_sources (tmp-&gt;data, FALSE);

  // add time effect, or set their children properties, or move them around
  ...
  // user can make sure that if a time effect changes one source, we should
  // also change the time effect for another source. E.g. if
  // "GstVideorate::rate" is set to 2.0, we also set "GstPitch::rate" to
  // 2.0

  // Note the duration of the clip may have already changed if the
  // duration-limit of the clip dropped below its current value

  new_end = ges_clip_get_timeline_time_from_internal_time (
        clip, source, source_outpoint, &amp;error);
  // handle error

  if (!ges_timeline_elemnet_edit_full (GES_TIMELINE_ELEMENT (clip),
        -1, GES_EDIT_MODE_TRIM, GES_EDGE_END, new_end, &amp;error))
    // handle error

  for (tmp = children; tmp; tmp = tmp-&gt;next)
    ges_track_element_set_auto_clamp_control_sources (tmp-&gt;data, TRUE);

  g_list_free_full (children, gst_object_unref);
  gst_object_unref (source);
}
```</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <virtual-method name="create_track_element">
        <doc xml:space="preserve">Method to create the core #GESTrackElement of a clip
of this class. If a clip of this class may create several track elements per
track type, this should be left as %NULL, and
GESClipClass::create_track_elements should be used instead. Otherwise, you
should implement this class method and leave
GESClipClass::create_track_elements as the default implementation</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The #GESTrackElement created
by @clip, or %NULL if @clip can not provide a track element for the
given @type or an error occurred.</doc>
          <type name="TrackElement" c:type="GESTrackElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackType to create a #GESTrackElement for</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="create_track_elements">
        <doc xml:space="preserve">Method to create the (multiple) core
#GESTrackElement-s of a clip of this class. If
GESClipClass::create_track_element is implemented, this should be kept as the
default implementation</doc>
        <return-value transfer-ownership="container">
          <doc xml:space="preserve">A list of
the #GESTrackElement-s created by @clip for the given @type, or %NULL
if no track elements are created or an error occurred.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="TrackElement"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackType to create #GESTrackElement-s for</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="add_asset" c:identifier="ges_clip_add_asset">
        <doc xml:space="preserve">Extracts a #GESTrackElement from an asset and adds it to the clip.
This can be used to add effects that derive from the asset to the
clip, but this method is not intended to be used to create the core
elements of the clip.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created element, or
%NULL if an error occurred.</doc>
          <type name="TrackElement" c:type="GESTrackElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">An asset with #GES_TYPE_TRACK_ELEMENT as its
#GESAsset:extractable-type</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_child_to_track" c:identifier="ges_clip_add_child_to_track" version="1.18" throws="1">
        <doc xml:space="preserve">Adds the track element child of the clip to a specific track.

If the given child is already in another track, this will create a copy
of the child, add it to the clip, and add this copy to the track.

You should only call this whilst a clip is part of a #GESTimeline, and
for tracks that are in the same timeline.

This method is an alternative to using the
#GESTimeline::select-tracks-for-object signal, but can be used to
complement it when, say, you wish to copy a clip's children from one
track into a new one.

When the child is a core child, it must be added to a track that does
not already contain another core child of the same clip. If it is not a
core child (an additional effect), then it must be added to a track
that already contains one of the core children of the same clip.

This method can also fail if the adding the track element to the track
would break a configuration rule of the corresponding #GESTimeline,
such as causing three sources to overlap at a single time, or causing
a source to completely overlap another in the same track.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The element that was added to @track, either
@child or a copy of child, or %NULL if the element could not be added.</doc>
          <type name="TrackElement" c:type="GESTrackElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="child" transfer-ownership="none">
            <doc xml:space="preserve">A child of @clip</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </parameter>
          <parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">The track to add @child to</doc>
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_top_effect" c:identifier="ges_clip_add_top_effect" version="1.18" throws="1">
        <doc xml:space="preserve">Add a top effect to a clip at the given index.

Unlike using ges_container_add(), this allows you to set the index
in advance. It will also check that no error occurred during the track
selection for the effect.

Note, only subclasses of #GESClipClass that have
#GES_CLIP_CLASS_CAN_ADD_EFFECTS set to %TRUE (such as #GESSourceClip
and #GESBaseEffectClip) can have additional top effects added.

Note, if the effect is a time effect, this may be refused if the clip
would not be able to adapt itself once the effect is added.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @effect was successfully added to @clip at @index.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">A top effect to add</doc>
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </parameter>
          <parameter name="index" transfer-ownership="none">
            <doc xml:space="preserve">The index to add @effect at, or -1 to add at the highest,
        see #ges_clip_get_top_effect_index for more information</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
        </parameters>
      </method>
      <method name="find_track_element" c:identifier="ges_clip_find_track_element">
        <doc xml:space="preserve">Finds an element controlled by the clip. If @track is given,
then only the track elements in @track are searched for. If @type is
given, then this function searches for a track element of the given
@type.

Note, if multiple track elements in the clip match the given criteria,
this will return the element amongst them with the highest
#GESTimelineElement:priority (numerically, the smallest). See
ges_clip_find_track_elements() if you wish to find all such elements.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The element controlled by
@clip, in @track, and of the given @type, or %NULL if no such element
could be found.</doc>
          <type name="TrackElement" c:type="GESTrackElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="track" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The track to search in, or %NULL to search in
all tracks</doc>
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">The type of track element to search for, or `G_TYPE_NONE` to
match any type</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </method>
      <method name="find_track_elements" c:identifier="ges_clip_find_track_elements">
        <doc xml:space="preserve">Finds the #GESTrackElement-s controlled by the clip that match the
given criteria. If @track is given as %NULL and @track_type is given as
#GES_TRACK_TYPE_UNKNOWN, then the search will match all elements in any
track, including those with no track, and of any
#GESTrackElement:track-type. Otherwise, if @track is not %NULL, but
@track_type is #GES_TRACK_TYPE_UNKNOWN, then only the track elements in
@track are searched for. Otherwise, if @track_type is not
#GES_TRACK_TYPE_UNKNOWN, but @track is %NULL, then only the track
elements whose #GESTrackElement:track-type matches @track_type are
searched for. Otherwise, when both are given, the track elements that
match **either** criteria are searched for. Therefore, if you wish to
only find elements in a specific track, you should give the track as
@track, but you should not give the track's #GESTrack:track-type as
@track_type because this would also select elements from other tracks
of the same type.

You may also give @type to _further_ restrict the search to track
elements of the given @type.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A list of all
the #GESTrackElement-s controlled by @clip, in @track or of the given
@track_type, and of the given @type.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="TrackElement"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="track" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The track to search in, or %NULL to search in
all tracks</doc>
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
          <parameter name="track_type" transfer-ownership="none">
            <doc xml:space="preserve">The track-type of the track element to search for, or
#GES_TRACK_TYPE_UNKNOWN to match any track type</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">The type of track element to search for, or %G_TYPE_NONE to
match any type</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_duration_limit" c:identifier="ges_clip_get_duration_limit" glib:get-property="duration-limit" version="1.18">
        <doc xml:space="preserve">Gets the #GESClip:duration-limit of the clip.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The duration-limit of @clip.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_internal_time_from_timeline_time" c:identifier="ges_clip_get_internal_time_from_timeline_time" version="1.18" throws="1">
        <doc xml:space="preserve">Convert the timeline time to an internal source time of the child.
This will take any time effects placed on the clip into account (see
#GESBaseEffect for what time effects are supported, and how to
declare them in GES).

When @timeline_time is above the #GESTimelineElement:start of @clip,
this will return the internal time at which the content that appears at
@timeline_time in the output of the timeline is created in @child. For
example, if @timeline_time corresponds to the current seek position,
this would let you know which part of a media file is being read.

This will be done assuming the clip has an indefinite end, so the
internal time may be beyond the current out-point of the child, or even
its #GESTimelineElement:max-duration.

If, instead, @timeline_time is below the current
#GESTimelineElement:start of @clip, this will return what you would
need to set the #GESTimelineElement:in-point of @child to if you set
the #GESTimelineElement:start of @clip to @timeline_time and wanted
to keep the content of @child currently found at the current
#GESTimelineElement:start of @clip at the same timeline position. If
this would be negative, the conversion fails. This is useful for
determining what #GESTimelineElement:in-point would result from a
#GES_EDIT_MODE_TRIM to @timeline_time.

Note that whilst a clip has no time effects, this second return is
equivalent to finding the internal time at which the content that
appears at @timeline_time in the timeline can be found in @child if it
had indefinite extent in both directions. However, with non-linear time
effects this second return will be more distinct.

In either case, the returned time would be appropriate to use for the
#GESTimelineElement:in-point or #GESTimelineElement:max-duration of the
child.

See ges_clip_get_timeline_time_from_internal_time(), which performs the
reverse.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The time in the internal coordinates of @child corresponding
to @timeline_time, or #GST_CLOCK_TIME_NONE if the conversion could not
be performed.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="child" transfer-ownership="none">
            <doc xml:space="preserve">An #GESTrackElement:active child of @clip with a
#GESTrackElement:track</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </parameter>
          <parameter name="timeline_time" transfer-ownership="none">
            <doc xml:space="preserve">A time in the timeline time coordinates</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_layer" c:identifier="ges_clip_get_layer" glib:get-property="layer">
        <doc xml:space="preserve">Gets the #GESClip:layer of the clip.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The layer @clip is in, or %NULL if
@clip is not in any layer.</doc>
          <type name="Layer" c:type="GESLayer*"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_supported_formats" c:identifier="ges_clip_get_supported_formats" glib:get-property="supported-formats">
        <doc xml:space="preserve">Gets the #GESClip:supported-formats of the clip.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The #GESTrackType-s supported by @clip.</doc>
          <type name="TrackType" c:type="GESTrackType"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_timeline_time_from_internal_time" c:identifier="ges_clip_get_timeline_time_from_internal_time" version="1.18" throws="1">
        <doc xml:space="preserve">Convert the internal source time from the child to a timeline time.
This will take any time effects placed on the clip into account (see
#GESBaseEffect for what time effects are supported, and how to
declare them in GES).

When @internal_time is above the #GESTimelineElement:in-point of
@child, this will return the timeline time at which the internal
content found at @internal_time appears in the output of the timeline's
track. For example, this would let you know where in the timeline a
particular scene in a media file would appear.

This will be done assuming the clip has an indefinite end, so the
timeline time may be beyond the end of the clip, or even breaking its
#GESClip:duration-limit.

If, instead, @internal_time is below the current
#GESTimelineElement:in-point of @child, this will return what you would
need to set the #GESTimelineElement:start of @clip to if you set the
#GESTimelineElement:in-point of @child to @internal_time and wanted to
keep the content of @child currently found at the current
#GESTimelineElement:start of @clip at the same timeline position. If
this would be negative, the conversion fails. This is useful for
determining what position to use in a #GES_EDIT_MODE_TRIM if you wish
to trim to a specific point in the internal content, such as a
particular scene in a media file.

Note that whilst a clip has no time effects, this second return is
equivalent to finding the timeline time at which the content of @child
at @internal_time would be found in the timeline if it had indefinite
extent in both directions. However, with non-linear time effects this
second return will be more distinct.

In either case, the returned time would be appropriate to use in
ges_timeline_element_edit() for #GES_EDIT_MODE_TRIM, and similar, if
you wish to use a particular internal point as a reference. For
example, you could choose to end a clip at a certain internal
'out-point', similar to the #GESTimelineElement:in-point, by
translating the desired end time into the timeline coordinates, and
using this position to trim the end of a clip.

See ges_clip_get_internal_time_from_timeline_time(), which performs the
reverse, or ges_clip_get_timeline_time_from_source_frame() which does
the same conversion, but using frame numbers.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The time in the timeline coordinates corresponding to
@internal_time, or #GST_CLOCK_TIME_NONE if the conversion could not be
performed.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="child" transfer-ownership="none">
            <doc xml:space="preserve">An #GESTrackElement:active child of @clip with a
#GESTrackElement:track</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </parameter>
          <parameter name="internal_time" transfer-ownership="none">
            <doc xml:space="preserve">A time in the internal time coordinates of @child</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_timeline_time_from_source_frame" c:identifier="ges_clip_get_timeline_time_from_source_frame" version="1.18" throws="1">
        <doc xml:space="preserve">Convert the source frame number to a timeline time. This acts the same
as ges_clip_get_timeline_time_from_internal_time() using the core
children of the clip and using the frame number to specify the internal
position, rather than a timestamp.

The returned timeline time can be used to seek or edit to a specific
frame.

Note that you can get the frame timestamp of a particular clip asset
with ges_clip_asset_get_frame_time().</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The timestamp corresponding to @frame_number in the core
children of @clip, in the timeline coordinates, or #GST_CLOCK_TIME_NONE
if the conversion could not be performed.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="frame_number" transfer-ownership="none">
            <doc xml:space="preserve">The frame number to get the corresponding timestamp of
in the timeline coordinates</doc>
            <type name="FrameNumber" c:type="GESFrameNumber"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_top_effect_index" c:identifier="ges_clip_get_top_effect_index">
        <doc xml:space="preserve">Gets the internal index of an effect in the clip. The index of effects
in a clip will run from 0 to n-1, where n is the total number of
effects. If two effects share the same #GESTrackElement:track, the
effect with the numerically lower index will be applied to the source
data **after** the other effect, i.e. output data will always flow from
a higher index effect to a lower index effect.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The index of @effect in @clip, or -1 if something went wrong.</doc>
          <type name="gint" c:type="gint"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">The effect we want to get the index of</doc>
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_top_effect_position" c:identifier="ges_clip_get_top_effect_position">
        <return-value transfer-ownership="none">
          <type name="gint" c:type="gint"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="effect" transfer-ownership="none">
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_top_effects" c:identifier="ges_clip_get_top_effects">
        <doc xml:space="preserve">Gets the #GESBaseEffect-s that have been added to the clip. The
returned list is ordered by their internal index in the clip. See
ges_clip_get_top_effect_index().</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A list of all
#GESBaseEffect-s that have been added to @clip.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="TrackElement"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="move_to_layer" c:identifier="ges_clip_move_to_layer">
        <doc xml:space="preserve">See ges_clip_move_to_layer_full(), which also gives an error.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @clip was successfully moved to @layer.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The new layer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </parameter>
        </parameters>
      </method>
      <method name="move_to_layer_full" c:identifier="ges_clip_move_to_layer_full" version="1.18" throws="1">
        <doc xml:space="preserve">Moves a clip to a new layer. If the clip already exists in a layer, it
is first removed from its current layer before being added to the new
layer.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @clip was successfully moved to @layer.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The new layer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove_top_effect" c:identifier="ges_clip_remove_top_effect" version="1.18" throws="1">
        <doc xml:space="preserve">Remove a top effect from the clip.

Note, if the effect is a time effect, this may be refused if the clip
would not be able to adapt itself once the effect is removed.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @effect was successfully added to @clip at @index.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">The top effect to remove</doc>
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_supported_formats" c:identifier="ges_clip_set_supported_formats" glib:set-property="supported-formats">
        <doc xml:space="preserve">Sets the #GESClip:supported-formats of the clip. This should normally
only be called by subclasses, which should be responsible for updating
its value, rather than the user.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="supportedformats" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrackType-s supported by @clip</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_top_effect_index" c:identifier="ges_clip_set_top_effect_index">
        <doc xml:space="preserve">See ges_clip_set_top_effect_index_full(), which also gives an error.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @effect was successfully moved to @newindex.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">An effect within @clip to move</doc>
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </parameter>
          <parameter name="newindex" transfer-ownership="none">
            <doc xml:space="preserve">The index for @effect in @clip</doc>
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_top_effect_index_full" c:identifier="ges_clip_set_top_effect_index_full" version="1.18" throws="1">
        <doc xml:space="preserve">Set the index of an effect within the clip. See
ges_clip_get_top_effect_index(). The new index must be an existing
index of the clip. The effect is moved to the new index, and the other
effects may be shifted in index accordingly to otherwise maintain the
ordering.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @effect was successfully moved to @newindex.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">A #GESClip</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">An effect within @clip to move</doc>
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </parameter>
          <parameter name="newindex" transfer-ownership="none">
            <doc xml:space="preserve">The index for @effect in @clip</doc>
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_top_effect_priority" c:identifier="ges_clip_set_top_effect_priority">
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="effect" transfer-ownership="none">
            <type name="BaseEffect" c:type="GESBaseEffect*"/>
          </parameter>
          <parameter name="newpriority" transfer-ownership="none">
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="split" c:identifier="ges_clip_split">
        <doc xml:space="preserve">See ges_clip_split_full(), which also gives an error.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created clip resulting
from the splitting @clip, or %NULL if @clip can't be split.</doc>
          <type name="Clip" c:type="GESClip*"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The #GESClip to split</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The timeline position at which to perform the split</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </method>
      <method name="split_full" c:identifier="ges_clip_split_full" version="1.18" throws="1">
        <doc xml:space="preserve">Splits a clip at the given timeline position into two clips. The clip
must already have a #GESClip:layer.

The original clip's #GESTimelineElement:duration is reduced such that
its end point matches the split position. Then a new clip is created in
the same layer, whose #GESTimelineElement:start matches the split
position and #GESTimelineElement:duration will be set such that its end
point matches the old end point of the original clip. Thus, the two
clips together will occupy the same positions in the timeline as the
original clip did.

The children of the new clip will be new copies of the original clip's
children, so it will share the same sources and use the same
operations.

The new clip will also have its #GESTimelineElement:in-point set so
that any internal data will appear in the timeline at the same time.
Thus, when the timeline is played, the playback of data should
appear the same. This may be complicated by any additional
#GESEffect-s that have been placed on the original clip that depend on
the playback time or change the data consumption rate of sources. This
method will attempt to translate these effects such that the playback
appears the same. In such complex situations, you may get a better
result if you place the clip in a separate sub #GESProject, which only
contains this clip (and its effects), and in the original layer
create two neighbouring #GESUriClip-s that reference this sub-project,
but at a different #GESTimelineElement:in-point.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created clip resulting
from the splitting @clip, or %NULL if @clip can't be split.</doc>
          <type name="Clip" c:type="GESClip*"/>
        </return-value>
        <parameters>
          <instance-parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The #GESClip to split</doc>
            <type name="Clip" c:type="GESClip*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The timeline position at which to perform the split, between
the start and end of the clip</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </method>
      <property name="duration-limit" version="1.18" transfer-ownership="none" getter="get_duration_limit" default-value="18446744073709551615">
        <doc xml:space="preserve">The maximum #GESTimelineElement:duration that can be *currently* set
for the clip, taking into account the #GESTimelineElement:in-point,
#GESTimelineElement:max-duration, #GESTrackElement:active, and
#GESTrackElement:track properties of its children, as well as any
time effects. If there is no limit, this will be set to
#GST_CLOCK_TIME_NONE.

Note that whilst a clip has no children in any tracks, the limit will
be unknown, and similarly set to #GST_CLOCK_TIME_NONE.

If the duration-limit would ever go below the current
#GESTimelineElement:duration of the clip due to a change in the above
variables, its #GESTimelineElement:duration will be set to the new
limit.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="layer" transfer-ownership="none" getter="get_layer">
        <doc xml:space="preserve">The layer this clip lies in.

If you want to connect to this property's #GObject::notify signal,
you should connect to it with g_signal_connect_after() since the
signal emission may be stopped internally.</doc>
        <type name="Layer"/>
      </property>
      <property name="supported-formats" writable="1" construct="1" transfer-ownership="none" setter="set_supported_formats" getter="get_supported_formats" default-value="GES_TRACK_TYPE_AUDIO | GES_TRACK_TYPE_VIDEO">
        <doc xml:space="preserve">The #GESTrackType-s that the clip supports, which it can create
#GESTrackElement-s for. Note that this can be a combination of
#GESTrackType flags to indicate support for several
#GESTrackElement:track-type elements.</doc>
        <type name="TrackType"/>
      </property>
      <field name="parent">
        <type name="Container" c:type="GESContainer"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="ClipPrivate" c:type="GESClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="20">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <class name="ClipAsset" c:symbol-prefix="clip_asset" c:type="GESClipAsset" parent="Asset" glib:type-name="GESClipAsset" glib:get-type="ges_clip_asset_get_type" glib:type-struct="ClipAssetClass">
      <doc xml:space="preserve">The #GESUriClipAsset is a special #GESAsset specilized in #GESClip.
it is mostly used to get information about the #GESTrackType-s the objects extracted
from it can potentialy create #GESTrackElement for.</doc>
      <implements name="MetaContainer"/>
      <implements name="Gio.AsyncInitable"/>
      <implements name="Gio.Initable"/>
      <virtual-method name="get_natural_framerate" invoker="get_natural_framerate" version="1.18">
        <doc xml:space="preserve">Result: %TRUE if @self has a natural framerate %FALSE otherwise</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @self has a natural framerate @FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The object from which to retrieve the natural framerate</doc>
            <type name="ClipAsset" c:type="GESClipAsset*"/>
          </instance-parameter>
          <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate numerator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
          <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate denominator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="get_frame_time" c:identifier="ges_clip_asset_get_frame_time" version="1.18">
        <doc xml:space="preserve">Converts the given frame number into a timestamp, using the "natural" frame
rate of the asset.

You can use this to reference a specific frame in a media file and use this
as, for example, the `in-point` or `max-duration` of a #GESClip.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The timestamp corresponding to @frame_number in the element source, given
in internal time coordinates, or #GST_CLOCK_TIME_NONE if the clip asset does not have a
natural frame rate.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The object for which to compute timestamp for specifed frame</doc>
            <type name="ClipAsset" c:type="GESClipAsset*"/>
          </instance-parameter>
          <parameter name="frame_number" transfer-ownership="none">
            <doc xml:space="preserve">The frame number we want the internal time coordinate timestamp of</doc>
            <type name="FrameNumber" c:type="GESFrameNumber"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_natural_framerate" c:identifier="ges_clip_asset_get_natural_framerate" version="1.18">
        <doc xml:space="preserve">Result: %TRUE if @self has a natural framerate %FALSE otherwise</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The object from which to retrieve the natural framerate</doc>
            <type name="ClipAsset" c:type="GESClipAsset*"/>
          </instance-parameter>
          <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate numerator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
          <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate denominator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_supported_formats" c:identifier="ges_clip_asset_get_supported_formats" glib:get-property="supported-formats">
        <doc xml:space="preserve">Gets track types for which objects extracted from @self can create #GESTrackElement</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The track types on which @self will create TrackElement when added to
a layer</doc>
          <type name="TrackType" c:type="GESTrackType"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESClipAsset</doc>
            <type name="ClipAsset" c:type="GESClipAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_supported_formats" c:identifier="ges_clip_asset_set_supported_formats" glib:set-property="supported-formats">
        <doc xml:space="preserve">Sets track types for which objects extracted from @self can create #GESTrackElement</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESClipAsset</doc>
            <type name="ClipAsset" c:type="GESClipAsset*"/>
          </instance-parameter>
          <parameter name="supportedformats" transfer-ownership="none">
            <doc xml:space="preserve">The track types supported by the GESClipAsset</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </method>
      <property name="supported-formats" writable="1" construct="1" transfer-ownership="none" setter="set_supported_formats" getter="get_supported_formats" default-value="GES_TRACK_TYPE_AUDIO | GES_TRACK_TYPE_VIDEO">
        <doc xml:space="preserve">The formats supported by the asset.</doc>
        <type name="TrackType"/>
      </property>
      <field name="parent">
        <type name="Asset" c:type="GESAsset"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="ClipAssetPrivate" c:type="GESClipAssetPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="ClipAssetClass" c:type="GESClipAssetClass" glib:is-gtype-struct-for="ClipAsset">
      <field name="parent">
        <type name="AssetClass" c:type="GESAssetClass"/>
      </field>
      <field name="get_natural_framerate">
        <callback name="get_natural_framerate">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @self has a natural framerate @FALSE otherwise.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The object from which to retrieve the natural framerate</doc>
              <type name="ClipAsset" c:type="GESClipAsset*"/>
            </parameter>
            <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
              <doc xml:space="preserve">The framerate numerator</doc>
              <type name="gint" c:type="gint*"/>
            </parameter>
            <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
              <doc xml:space="preserve">The framerate denominator</doc>
              <type name="gint" c:type="gint*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="3">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="ClipAssetPrivate" c:type="GESClipAssetPrivate" disguised="1" opaque="1"/>
    <record name="ClipClass" c:type="GESClipClass" glib:is-gtype-struct-for="Clip">
      <field name="parent_class" readable="0" private="1">
        <type name="ContainerClass" c:type="GESContainerClass"/>
      </field>
      <field name="create_track_element">
        <doc xml:space="preserve">Method to create the core #GESTrackElement of a clip
of this class. If a clip of this class may create several track elements per
track type, this should be left as %NULL, and
GESClipClass::create_track_elements should be used instead. Otherwise, you
should implement this class method and leave
GESClipClass::create_track_elements as the default implementation</doc>
        <type name="CreateTrackElementFunc" c:type="GESCreateTrackElementFunc"/>
      </field>
      <field name="create_track_elements">
        <doc xml:space="preserve">Method to create the (multiple) core
#GESTrackElement-s of a clip of this class. If
GESClipClass::create_track_element is implemented, this should be kept as the
default implementation</doc>
        <type name="CreateTrackElementsFunc" c:type="GESCreateTrackElementsFunc"/>
      </field>
      <union name="ABI" c:type="ABI">
        <field name="_ges_reserved" writable="1">
          <array zero-terminated="0" fixed-size="20">
            <type name="gpointer" c:type="gpointer"/>
          </array>
        </field>
        <record name="abi" c:type="abi">
          <field name="can_add_effects" writable="1">
            <type name="gboolean" c:type="gboolean"/>
          </field>
        </record>
      </union>
    </record>
    <record name="ClipPrivate" c:type="GESClipPrivate" disguised="1" opaque="1"/>
    <class name="CommandLineFormatter" c:symbol-prefix="command_line_formatter" c:type="GESCommandLineFormatter" parent="Formatter" glib:type-name="GESCommandLineFormatter" glib:get-type="ges_command_line_formatter_get_type" glib:type-struct="CommandLineFormatterClass">
      <implements name="Extractable"/>
      <function name="get_help" c:identifier="ges_command_line_formatter_get_help" version="1.10">
        <doc xml:space="preserve">Creates a help string based on @commands.

Result: (transfer full): A help string.</doc>
        <return-value transfer-ownership="full">
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <parameter name="nargs" transfer-ownership="none">
            <doc xml:space="preserve">Number of commands in @commands</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
          <parameter name="commands" transfer-ownership="none">
            <doc xml:space="preserve">Commands</doc>
            <array length="0" zero-terminated="0" c:type="gchar**">
              <type name="utf8" c:type="gchar*"/>
            </array>
          </parameter>
        </parameters>
      </function>
      <function name="get_timeline_uri" c:identifier="ges_command_line_formatter_get_timeline_uri" version="1.10">
        <return-value transfer-ownership="full">
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">A GESTimeline to serialize</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
        </parameters>
      </function>
      <field name="parent_instance">
        <type name="Formatter" c:type="GESFormatter"/>
      </field>
      <field name="priv">
        <type name="CommandLineFormatterPrivate" c:type="GESCommandLineFormatterPrivate*"/>
      </field>
    </class>
    <record name="CommandLineFormatterClass" c:type="GESCommandLineFormatterClass" glib:is-gtype-struct-for="CommandLineFormatter">
      <field name="parent_class">
        <type name="FormatterClass" c:type="GESFormatterClass"/>
      </field>
    </record>
    <record name="CommandLineFormatterPrivate" c:type="GESCommandLineFormatterPrivate" disguised="1" opaque="1"/>
    <class name="Container" c:symbol-prefix="container" c:type="GESContainer" parent="TimelineElement" abstract="1" glib:type-name="GESContainer" glib:get-type="ges_container_get_type" glib:type-struct="ContainerClass">
      <doc xml:space="preserve">A #GESContainer is a timeline element that controls other
#GESTimelineElement-s, which are its children. In particular, it is
responsible for maintaining the relative #GESTimelineElement:start and
#GESTimelineElement:duration times of its children. Therefore, if a
container is temporally adjusted or moved to a new layer, it may
accordingly adjust and move its children. Similarly, a change in one of
its children may prompt the parent to correspondingly change its
siblings.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <function name="group" c:identifier="ges_container_group">
        <doc xml:space="preserve">Groups the containers into a single container by merging them. The
containers must all belong to the same #GESTimelineElement:timeline.

If the elements are all #GESClip-s then this method will attempt to
combine them all into a single #GESClip. This should succeed if they:
share the same #GESTimelineElement:start, #GESTimelineElement:duration
and #GESTimelineElement:in-point; exist in the same layer; and all of
the sources share the same #GESAsset. If this fails, or one of the
elements is not a #GESClip, this method will try to create a #GESGroup
instead.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The container created by merging
@containers, or %NULL if they could not be merged into a single
container.</doc>
          <type name="Container" c:type="GESContainer*"/>
        </return-value>
        <parameters>
          <parameter name="containers" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">
The #GESContainer-s to group</doc>
            <type name="GLib.List" c:type="GList*">
              <type name="Container"/>
            </type>
          </parameter>
        </parameters>
      </function>
      <virtual-method name="add_child">
        <doc xml:space="preserve">Virtual method to add a child</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="element" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="child_added">
        <doc xml:space="preserve">Virtual method that is called right after a #GESTimelineElement is added</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="element" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="child_removed">
        <doc xml:space="preserve">Virtual method that is called right after a #GESTimelineElement is removed</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="element" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="edit" invoker="edit" deprecated="1" deprecated-version="1.18">
        <doc xml:space="preserve">Edits the container within its timeline.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_edit instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the edit of @container completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">The #GESContainer to edit</doc>
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="layers" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A whitelist of layers
where the edit can be performed, %NULL allows all layers in the
timeline</doc>
            <type name="GLib.List" c:type="GList*">
              <type name="Layer"/>
            </type>
          </parameter>
          <parameter name="new_layer_priority" transfer-ownership="none">
            <doc xml:space="preserve">The priority/index of the layer @container should
be moved to. -1 means no move</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
          <parameter name="mode" transfer-ownership="none">
            <doc xml:space="preserve">The edit mode</doc>
            <type name="EditMode" c:type="GESEditMode"/>
          </parameter>
          <parameter name="edge" transfer-ownership="none">
            <doc xml:space="preserve">The edge of @container where the edit should occur</doc>
            <type name="Edge" c:type="GESEdge"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The edit position: a new location for the edge of @container
(in nanoseconds)</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="remove_child">
        <doc xml:space="preserve">Virtual method to remove a child</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="element" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="ungroup" invoker="ungroup">
        <doc xml:space="preserve">Ungroups the container by splitting it into several containers
containing various children of the original. The rules for how the
container splits depends on the subclass. A #GESGroup will simply split
into its children. A #GESClip will split into one #GESClip per
#GESTrackType it overlaps with (so an audio-video clip will split into
an audio clip and a video clip), where each clip contains all the
#GESTrackElement-s from the original clip with a matching
#GESTrackElement:track-type.

If @recursive is %TRUE, and the container contains other containers as
children, then they will also be ungrouped, and so on.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The list of
new #GESContainer-s created from the splitting of @container.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Container"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="full">
            <doc xml:space="preserve">The container to ungroup</doc>
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="recursive" transfer-ownership="none">
            <doc xml:space="preserve">Whether to recursively ungroup @container</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="add" c:identifier="ges_container_add">
        <doc xml:space="preserve">Adds a timeline element to the container. The element will now be a
child of the container (and the container will be the
#GESTimelineElement:parent of the added element), which means that it
is now controlled by the container. This may change the properties of
the child or the container, depending on the subclass.

Additionally, the children properties of the newly added element will
be shared with the container, meaning they can also be read and set
using ges_timeline_element_get_child_property() and
ges_timeline_element_set_child_property() on the container.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @child was successfully added to @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESContainer</doc>
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="child" transfer-ownership="none">
            <doc xml:space="preserve">The element to add as a child</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="edit" c:identifier="ges_container_edit" deprecated="1" deprecated-version="1.18">
        <doc xml:space="preserve">Edits the container within its timeline.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_edit instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the edit of @container completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">The #GESContainer to edit</doc>
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="layers" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A whitelist of layers
where the edit can be performed, %NULL allows all layers in the
timeline</doc>
            <type name="GLib.List" c:type="GList*">
              <type name="Layer"/>
            </type>
          </parameter>
          <parameter name="new_layer_priority" transfer-ownership="none">
            <doc xml:space="preserve">The priority/index of the layer @container should
be moved to. -1 means no move</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
          <parameter name="mode" transfer-ownership="none">
            <doc xml:space="preserve">The edit mode</doc>
            <type name="EditMode" c:type="GESEditMode"/>
          </parameter>
          <parameter name="edge" transfer-ownership="none">
            <doc xml:space="preserve">The edge of @container where the edit should occur</doc>
            <type name="Edge" c:type="GESEdge"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The edit position: a new location for the edge of @container
(in nanoseconds)</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_children" c:identifier="ges_container_get_children">
        <doc xml:space="preserve">Get the list of timeline elements contained in the container. If
@recursive is %TRUE, and the container contains other containers as
children, then their children will be added to the list, in addition to
themselves, and so on.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The list of
#GESTimelineElement-s contained in @container.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="TimelineElement"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESContainer</doc>
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="recursive" transfer-ownership="none">
            <doc xml:space="preserve">Whether to recursively get children in @container</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove" c:identifier="ges_container_remove">
        <doc xml:space="preserve">Removes a timeline element from the container. The element will no
longer be controlled by the container.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @child was successfully removed from @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESContainer</doc>
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="child" transfer-ownership="none">
            <doc xml:space="preserve">The child to remove</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="ungroup" c:identifier="ges_container_ungroup">
        <doc xml:space="preserve">Ungroups the container by splitting it into several containers
containing various children of the original. The rules for how the
container splits depends on the subclass. A #GESGroup will simply split
into its children. A #GESClip will split into one #GESClip per
#GESTrackType it overlaps with (so an audio-video clip will split into
an audio clip and a video clip), where each clip contains all the
#GESTrackElement-s from the original clip with a matching
#GESTrackElement:track-type.

If @recursive is %TRUE, and the container contains other containers as
children, then they will also be ungrouped, and so on.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The list of
new #GESContainer-s created from the splitting of @container.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Container"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="full">
            <doc xml:space="preserve">The container to ungroup</doc>
            <type name="Container" c:type="GESContainer*"/>
          </instance-parameter>
          <parameter name="recursive" transfer-ownership="none">
            <doc xml:space="preserve">Whether to recursively ungroup @container</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <property name="height" transfer-ownership="none" default-value="1">
        <doc xml:space="preserve">The span of the container's children's #GESTimelineElement:priority
values, which is the number of integers that lie between (inclusive)
the minimum and maximum priorities found amongst the container's
children (maximum - minimum + 1).</doc>
        <type name="guint" c:type="guint"/>
      </property>
      <field name="parent">
        <type name="TimelineElement" c:type="GESTimelineElement"/>
      </field>
      <field name="children">
        <doc xml:space="preserve">The list of
#GESTimelineElement-s controlled by this Container</doc>
        <type name="GLib.List" c:type="GList*">
          <type name="TimelineElement"/>
        </type>
      </field>
      <field name="height">
        <doc xml:space="preserve">The #GESContainer:height of @obj</doc>
        <type name="guint32" c:type="guint32"/>
      </field>
      <field name="children_control_mode">
        <type name="ChildrenControlMode" c:type="GESChildrenControlMode"/>
      </field>
      <field name="initiated_move">
        <type name="TimelineElement" c:type="GESTimelineElement*"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="ContainerPrivate" c:type="GESContainerPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="20">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <glib:signal name="child-added" when="first">
        <doc xml:space="preserve">Will be emitted after a child is added to the container. Usually,
you should connect with g_signal_connect_after() since the signal
may be stopped internally.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="element" transfer-ownership="none">
            <doc xml:space="preserve">The child that was added</doc>
            <type name="TimelineElement"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="child-removed" when="last">
        <doc xml:space="preserve">Will be emitted after a child is removed from the container.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="element" transfer-ownership="none">
            <doc xml:space="preserve">The child that was removed</doc>
            <type name="TimelineElement"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <record name="ContainerClass" c:type="GESContainerClass" glib:is-gtype-struct-for="Container">
      <field name="parent_class" readable="0" private="1">
        <type name="TimelineElementClass" c:type="GESTimelineElementClass"/>
      </field>
      <field name="child_added">
        <doc xml:space="preserve">Virtual method that is called right after a #GESTimelineElement is added</doc>
        <callback name="child_added">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="container" transfer-ownership="none">
              <type name="Container" c:type="GESContainer*"/>
            </parameter>
            <parameter name="element" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="child_removed">
        <doc xml:space="preserve">Virtual method that is called right after a #GESTimelineElement is removed</doc>
        <callback name="child_removed">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="container" transfer-ownership="none">
              <type name="Container" c:type="GESContainer*"/>
            </parameter>
            <parameter name="element" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="add_child">
        <doc xml:space="preserve">Virtual method to add a child</doc>
        <callback name="add_child">
          <return-value transfer-ownership="none">
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="container" transfer-ownership="none">
              <type name="Container" c:type="GESContainer*"/>
            </parameter>
            <parameter name="element" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="remove_child">
        <doc xml:space="preserve">Virtual method to remove a child</doc>
        <callback name="remove_child">
          <return-value transfer-ownership="none">
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="container" transfer-ownership="none">
              <type name="Container" c:type="GESContainer*"/>
            </parameter>
            <parameter name="element" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="ungroup">
        <doc xml:space="preserve">Virtual method to ungroup a container into a list of
containers</doc>
        <callback name="ungroup">
          <return-value transfer-ownership="full">
            <doc xml:space="preserve">The list of
new #GESContainer-s created from the splitting of @container.</doc>
            <type name="GLib.List" c:type="GList*">
              <type name="Container"/>
            </type>
          </return-value>
          <parameters>
            <parameter name="container" transfer-ownership="full">
              <doc xml:space="preserve">The container to ungroup</doc>
              <type name="Container" c:type="GESContainer*"/>
            </parameter>
            <parameter name="recursive" transfer-ownership="none">
              <doc xml:space="preserve">Whether to recursively ungroup @container</doc>
              <type name="gboolean" c:type="gboolean"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="group" introspectable="0">
        <doc xml:space="preserve">Virtual method to group a list of containers together under a
single container</doc>
        <callback name="group" introspectable="0">
          <return-value>
            <type name="Container" c:type="GESContainer*"/>
          </return-value>
          <parameters>
            <parameter name="containers" transfer-ownership="none">
              <type name="GLib.List" c:type="GList*">
                <type name="gpointer" c:type="gpointer"/>
              </type>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="edit">
        <doc xml:space="preserve">Deprecated</doc>
        <callback name="edit">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if the edit of @container completed, %FALSE on failure.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="container" transfer-ownership="none">
              <doc xml:space="preserve">The #GESContainer to edit</doc>
              <type name="Container" c:type="GESContainer*"/>
            </parameter>
            <parameter name="layers" transfer-ownership="none" nullable="1" allow-none="1">
              <doc xml:space="preserve">A whitelist of layers
where the edit can be performed, %NULL allows all layers in the
timeline</doc>
              <type name="GLib.List" c:type="GList*">
                <type name="Layer"/>
              </type>
            </parameter>
            <parameter name="new_layer_priority" transfer-ownership="none">
              <doc xml:space="preserve">The priority/index of the layer @container should
be moved to. -1 means no move</doc>
              <type name="gint" c:type="gint"/>
            </parameter>
            <parameter name="mode" transfer-ownership="none">
              <doc xml:space="preserve">The edit mode</doc>
              <type name="EditMode" c:type="GESEditMode"/>
            </parameter>
            <parameter name="edge" transfer-ownership="none">
              <doc xml:space="preserve">The edge of @container where the edit should occur</doc>
              <type name="Edge" c:type="GESEdge"/>
            </parameter>
            <parameter name="position" transfer-ownership="none">
              <doc xml:space="preserve">The edit position: a new location for the edge of @container
(in nanoseconds)</doc>
              <type name="guint64" c:type="guint64"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="grouping_priority" readable="0" private="1">
        <type name="guint" c:type="guint"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="20">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="ContainerPrivate" c:type="GESContainerPrivate" disguised="1" opaque="1"/>
    <callback name="CreateElementForGapFunc" c:type="GESCreateElementForGapFunc" introspectable="0">
      <doc xml:space="preserve">A function that creates a #GstElement that can be used as a source to
fill the gaps of the track. A gap is a timeline region where the track
has no #GESTrackElement sources.</doc>
      <return-value>
        <doc xml:space="preserve">A source #GstElement to fill gaps in @track.</doc>
        <type name="Gst.Element" c:type="GstElement*"/>
      </return-value>
      <parameters>
        <parameter name="track" transfer-ownership="none">
          <doc xml:space="preserve">The #GESTrack</doc>
          <type name="Track" c:type="GESTrack*"/>
        </parameter>
      </parameters>
    </callback>
    <callback name="CreateTrackElementFunc" c:type="GESCreateTrackElementFunc">
      <doc xml:space="preserve">A method for creating the core #GESTrackElement of a clip, to be added
to a #GESTrack of the given track type.

If a clip may produce several track elements per track type,
#GESCreateTrackElementsFunc is more appropriate.</doc>
      <return-value transfer-ownership="none" nullable="1">
        <doc xml:space="preserve">The #GESTrackElement created
by @clip, or %NULL if @clip can not provide a track element for the
given @type or an error occurred.</doc>
        <type name="TrackElement" c:type="GESTrackElement*"/>
      </return-value>
      <parameters>
        <parameter name="clip" transfer-ownership="none">
          <doc xml:space="preserve">A #GESClip</doc>
          <type name="Clip" c:type="GESClip*"/>
        </parameter>
        <parameter name="type" transfer-ownership="none">
          <doc xml:space="preserve">A #GESTrackType to create a #GESTrackElement for</doc>
          <type name="TrackType" c:type="GESTrackType"/>
        </parameter>
      </parameters>
    </callback>
    <callback name="CreateTrackElementsFunc" c:type="GESCreateTrackElementsFunc">
      <doc xml:space="preserve">A method for creating the core #GESTrackElement-s of a clip, to be
added to #GESTrack-s of the given track type.</doc>
      <return-value transfer-ownership="container">
        <doc xml:space="preserve">A list of
the #GESTrackElement-s created by @clip for the given @type, or %NULL
if no track elements are created or an error occurred.</doc>
        <type name="GLib.List" c:type="GList*">
          <type name="TrackElement"/>
        </type>
      </return-value>
      <parameters>
        <parameter name="clip" transfer-ownership="none">
          <doc xml:space="preserve">A #GESClip</doc>
          <type name="Clip" c:type="GESClip*"/>
        </parameter>
        <parameter name="type" transfer-ownership="none">
          <doc xml:space="preserve">A #GESTrackType to create #GESTrackElement-s for</doc>
          <type name="TrackType" c:type="GESTrackType"/>
        </parameter>
      </parameters>
    </callback>
    <function-macro name="DECLARE_TYPE" c:identifier="GES_DECLARE_TYPE" introspectable="0">
      <attribute name="doc.skip" value="true"/>
      <parameters>
        <parameter name="ObjName">
        </parameter>
        <parameter name="obj_name">
        </parameter>
        <parameter name="OBJ_NAME">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="DEPRECATED_FOR" c:identifier="GES_DEPRECATED_FOR" introspectable="0">
      <parameters>
        <parameter name="f">
        </parameter>
      </parameters>
    </function-macro>
    <class name="DiscovererManager" c:symbol-prefix="discoverer_manager" c:type="GESDiscovererManager" version="1.24" parent="GObject.Object" glib:type-name="GESDiscovererManager" glib:get-type="ges_discoverer_manager_get_type" glib:type-struct="DiscovererManagerClass">
      <function name="get_default" c:identifier="ges_discoverer_manager_get_default" version="1.24">
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The default #GESDiscovererManager</doc>
          <type name="DiscovererManager" c:type="GESDiscovererManager*"/>
        </return-value>
      </function>
      <method name="get_timeout" c:identifier="ges_discoverer_manager_get_timeout" glib:get-property="timeout" version="1.24">
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The timeout to use for the discoverer</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESDiscovererManager</doc>
            <type name="DiscovererManager" c:type="GESDiscovererManager*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_use_cache" c:identifier="ges_discoverer_manager_get_use_cache" glib:get-property="use-cache" version="1.24">
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">Whether to use the cache or not</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESDiscovererManager</doc>
            <type name="DiscovererManager" c:type="GESDiscovererManager*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_timeout" c:identifier="ges_discoverer_manager_set_timeout" glib:set-property="timeout" version="1.24">
        <doc xml:space="preserve">Sets the timeout to use for the discoverer</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESDiscovererManager</doc>
            <type name="DiscovererManager" c:type="GESDiscovererManager*"/>
          </instance-parameter>
          <parameter name="timeout" transfer-ownership="none">
            <doc xml:space="preserve">The timeout to set</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_use_cache" c:identifier="ges_discoverer_manager_set_use_cache" glib:set-property="use-cache" version="1.24">
        <doc xml:space="preserve">Sets whether to use the cache or not</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESDiscovererManager</doc>
            <type name="DiscovererManager" c:type="GESDiscovererManager*"/>
          </instance-parameter>
          <parameter name="use_cache" transfer-ownership="none">
            <doc xml:space="preserve">Whether to use the cache</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <property name="timeout" version="1.24" writable="1" construct="1" transfer-ownership="none" setter="set_timeout" getter="get_timeout" default-value="60000000000">
        <doc xml:space="preserve">The timeout (in milliseconds) for the #GstDiscoverer operations</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="use-cache" writable="1" construct="1" transfer-ownership="none" setter="set_use_cache" getter="get_use_cache" default-value="FALSE">
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <glib:signal name="discovered" when="last" version="1.24">
        <attribute name="doc.skip" value="true"/>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="info" transfer-ownership="none">
            <doc xml:space="preserve">The #GstDiscovererInfo representing the discovered URI</doc>
            <type name="GstPbutils.DiscovererInfo"/>
          </parameter>
          <parameter name="error" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The #GError that occurred, or %NULL</doc>
            <type name="GLib.Error"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="load-serialized-info" when="last" version="1.24">
        <doc xml:space="preserve">Retrieves information about a URI from and external source of information,
like a cache file. This is used by the discoverer to speed up the
discovery.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The #GstDiscovererInfo representing
@uri, or %NULL if no information</doc>
          <type name="GstPbutils.DiscovererInfo"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">The URI to load the serialized info for</doc>
            <type name="utf8" c:type="gchar*"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="source-setup" when="last" version="1.24">
        <doc xml:space="preserve">Allows to setup the source element before the discoverer runs.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">The source #GstElement to setup</doc>
            <type name="Gst.Element"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <record name="DiscovererManagerClass" c:type="GESDiscovererManagerClass" glib:is-gtype-struct-for="DiscovererManager">
      <field name="parent_class">
        <type name="GObject.ObjectClass" c:type="GObjectClass"/>
      </field>
    </record>
    <record name="DiscovererManagerPrivate" c:type="GESDiscovererManagerPrivate" disguised="1" opaque="1"/>
    <function-macro name="EXTRACTABLE_GET_INTERFACE" c:identifier="GES_EXTRACTABLE_GET_INTERFACE" introspectable="0">
      <parameters>
        <parameter name="inst">
        </parameter>
      </parameters>
    </function-macro>
    <enumeration name="Edge" glib:type-name="GESEdge" glib:get-type="ges_edge_get_type" c:type="GESEdge">
      <doc xml:space="preserve">The edges of an object contain in a #GESTimeline or #GESTrack</doc>
      <member name="start" value="0" c:identifier="GES_EDGE_START" glib:nick="start" glib:name="GES_EDGE_START">
        <doc xml:space="preserve">Represents the start of an object.</doc>
      </member>
      <member name="end" value="1" c:identifier="GES_EDGE_END" glib:nick="end" glib:name="GES_EDGE_END">
        <doc xml:space="preserve">Represents the end of an object.</doc>
      </member>
      <member name="none" value="2" c:identifier="GES_EDGE_NONE" glib:nick="none" glib:name="GES_EDGE_NONE">
        <doc xml:space="preserve">Represent the fact we are not working with any edge of an
  object.</doc>
      </member>
      <function name="name" c:identifier="ges_edge_name" version="1.16">
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">A human friendly name for @edge</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <parameter name="edge" transfer-ownership="none">
            <doc xml:space="preserve">The #GESEdge to get the name of</doc>
            <type name="Edge" c:type="GESEdge"/>
          </parameter>
        </parameters>
      </function>
    </enumeration>
    <enumeration name="EditMode" glib:type-name="GESEditMode" glib:get-type="ges_edit_mode_get_type" c:type="GESEditMode">
      <doc xml:space="preserve">When a single timeline element is edited within its timeline at some
position, using ges_timeline_element_edit(), depending on the edit
mode, its #GESTimelineElement:start, #GESTimelineElement:duration or
#GESTimelineElement:in-point will be adjusted accordingly. In addition,
any clips may change #GESClip:layer.

Each edit can be broken down into a combination of three basic edits:

+ MOVE: This moves the start of the element to the edit position.
+ START-TRIM: This cuts or grows the start of the element, whilst
  maintaining the time at which its internal content appears in the
  timeline data output. If the element is made shorter, the data that
  appeared at the edit position will still appear in the timeline at
  the same time. If the element is made longer, the data that appeared
  at the previous start of the element will still appear in the
  timeline at the same time.
+ END-TRIM: Similar to START-TRIM, but the end of the element is cut or
  grown.

In particular, when editing a #GESClip:

+ MOVE: This will set the #GESTimelineElement:start of the clip to the
  edit position.
+ START-TRIM: This will set the #GESTimelineElement:start of the clip
  to the edit position. To keep the end time the same, the
  #GESTimelineElement:duration of the clip will be adjusted in the
  opposite direction. In addition, the #GESTimelineElement:in-point of
  the clip will be shifted such that the content that appeared at the
  new or previous start time, whichever is latest, still appears at the
  same timeline time. For example, if a frame appeared at the start of
  the clip, and the start of the clip is reduced, the in-point of the
  clip will also reduce such that the frame will appear later within
  the clip, but at the same timeline position.
+ END-TRIM: This will set the #GESTimelineElement:duration of the clip
  such that its end time will match the edit position.

When editing a #GESGroup:

+ MOVE: This will set the #GESGroup:start of the clip to the edit
  position by shifting all of its children by the same amount. So each
  child will maintain their relative positions.
+ START-TRIM: If the group is made shorter, this will START-TRIM any
  clips under the group that start after the edit position to the same
  edit position. If the group is made longer, this will START-TRIM any
  clip under the group whose start matches the start of the group to
  the same edit position.
+ END-TRIM: If the group is made shorter, this will END-TRIM any clips
  under the group that end after the edit position to the same edit
  position. If the group is made longer, this will END-TRIM any clip
  under the group whose end matches the end of the group to the same
  edit position.

When editing a #GESTrackElement, if it has a #GESClip parent, this
will be edited instead. Otherwise it is edited in the same way as a
#GESClip.

The layer priority of a #GESGroup is the lowest layer priority of any
#GESClip underneath it. When a group is edited to a new layer
priority, it will shift all clips underneath it by the same amount,
such that their relative layers stay the same.

If the #GESTimeline has a #GESTimeline:snapping-distance, then snapping
may occur for some of the edges of the **main** edited element:

+ MOVE: The start or end edge of *any* #GESSource under the element may
  be snapped.
+ START-TRIM: The start edge of a #GESSource whose start edge touches
  the start edge of the element may snap.
+ END-TRIM: The end edge of a #GESSource whose end edge touches the end
  edge of the element may snap.

These edges may snap with either the start or end edge of *any* other
#GESSource in the timeline that is not also being moved by the element,
including those in different layers, if they are within the
#GESTimeline:snapping-distance. During an edit, only up to one snap can
occur. This will shift the edit position such that the snapped edges
will touch once the edit has completed.

Note that snapping can cause an edit to fail where it would have
otherwise succeeded because it may push the edit position such that the
edit would result in an unsupported timeline configuration. Similarly,
snapping can cause an edit to succeed where it would have otherwise
failed.

For example, in #GES_EDIT_MODE_RIPPLE acting on #GES_EDGE_NONE, the
main element is the MOVED toplevel of the edited element. Any source
under the main MOVED toplevel may have its start or end edge snapped.
Note, these sources cannot snap with each other. The edit may also
push other elements, but any sources under these elements cannot snap,
nor can they be snapped with. If a snap does occur, the MOVE of the
toplevel *and* all other elements pushed by the ripple will be shifted
by the same amount such that the snapped edges will touch.

You can also find more explanation about the behaviour of those modes at:
[trim, ripple and roll](http://pitivi.org/manual/trimming.html)
and [clip management](http://pitivi.org/manual/usingclips.html).</doc>
      <member name="normal" value="0" c:identifier="GES_EDIT_MODE_NORMAL" glib:nick="normal" glib:name="GES_EDIT_MODE_NORMAL">
        <doc xml:space="preserve">The element is edited the normal way (default).
 If acting on the element as a whole (#GES_EDGE_NONE), this will MOVE
 the element by MOVING its toplevel. When acting on the start of the
 element (#GES_EDGE_START), this will only MOVE the element, but not
 its toplevel parent. This can allow you to move a #GESClip or
 #GESGroup to a new start time or layer within its container group,
 without effecting other members of the group. When acting on the end
 of the element (#GES_EDGE_END), this will END-TRIM the element,
 leaving its toplevel unchanged.</doc>
      </member>
      <member name="ripple" value="1" c:identifier="GES_EDIT_MODE_RIPPLE" glib:nick="ripple" glib:name="GES_EDIT_MODE_RIPPLE">
        <doc xml:space="preserve">The element is edited in ripple mode: moving
 itself as well as later elements, keeping their relative times. This
 edits the element the same as #GES_EDIT_MODE_NORMAL. In addition, if
 acting on the element as a whole, or the start of the element, any
 toplevel element in the same timeline (including different layers)
 whose start time is later than the *current* start time of the MOVED
 element will also be MOVED by the same shift as the edited element.
 If acting on the end of the element, any toplevel element whose start
 time is later than the *current* end time of the edited element will
 also be MOVED by the same shift as the change in the end of the
 edited element. These additional elements will also be shifted by
 the same shift in layers as the edited element.</doc>
      </member>
      <member name="roll" value="2" c:identifier="GES_EDIT_MODE_ROLL" glib:nick="roll" glib:name="GES_EDIT_MODE_ROLL">
        <doc xml:space="preserve">The element is edited in roll mode: swapping its
 content for its neighbour's, or vis versa, in the timeline output.
 This edits the element the same as #GES_EDIT_MODE_TRIM. In addition,
 any neighbours are also TRIMMED at their opposite edge to the same
 timeline position. When acting on the start of the element, a
 neighbour is any earlier element in the timeline whose end time
 matches the *current* start time of the edited element. When acting on
 the end of the element, a neighbour is any later element in the
 timeline whose start time matches the *current* start time of the
 edited element. In addition, a neighbour have a #GESSource at its
 end/start edge that shares a track with a #GESSource at the start/end
 edge of the edited element. Basically, a neighbour is an element that
 can be extended, or cut, to have its content replace, or be replaced
 by, the content of the edited element. Acting on the element as a
 whole (#GES_EDGE_NONE) is not defined. The element can not shift
 layers under this mode.</doc>
      </member>
      <member name="trim" value="3" c:identifier="GES_EDIT_MODE_TRIM" glib:nick="trim" glib:name="GES_EDIT_MODE_TRIM">
        <doc xml:space="preserve">The element is edited in trim mode. When acting
 on the start of the element, this will START-TRIM it. When acting on
 the end of the element, this will END-TRIM it. Acting on the element
 as a whole (#GES_EDGE_NONE) is not defined.</doc>
      </member>
      <member name="slide" value="4" c:identifier="GES_EDIT_MODE_SLIDE" glib:nick="slide" glib:name="GES_EDIT_MODE_SLIDE">
        <doc xml:space="preserve">The element is edited in slide mode (not yet
 implemented): moving the element replacing or consuming content on
 each end. When acting on the element as a whole, this will MOVE the
 element, and TRIM any neighbours on either side. A neighbour is
 defined in the same way as in #GES_EDIT_MODE_ROLL, but they may be on
 either side of the edited elements. Elements at the end with be
 START-TRIMMED to the new end position of the edited element. Elements
 at the start will be END-TRIMMED to the new start position of the
 edited element. Acting on the start or end of the element
 (#GES_EDGE_START and #GES_EDGE_END) is not defined. The element can
 not shift layers under this mode.</doc>
      </member>
      <function name="name" c:identifier="ges_edit_mode_name" version="1.18">
        <doc xml:space="preserve">Return a string representation of @mode.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">a string representation of @mode.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <parameter name="mode" transfer-ownership="none">
            <doc xml:space="preserve">a #GESEditMode</doc>
            <type name="EditMode" c:type="GESEditMode"/>
          </parameter>
        </parameters>
      </function>
    </enumeration>
    <class name="Effect" c:symbol-prefix="effect" c:type="GESEffect" parent="BaseEffect" glib:type-name="GESEffect" glib:get-type="ges_effect_get_type" glib:type-struct="EffectClass">
      <doc xml:space="preserve">Any GStreamer filter can be used as effects in GES. The only restriction we
have is that effects element should have a single [sinkpad](GST_PAD_SINK)
(which will be requested if necessary) and a single [srcpad](GST_PAD_SRC).

Note that `gesaudiomixer` and `gescompositor` can be used as effects even
though they can have several sinkpads.

## GES specific effects:

* **`gesvideoscale`**: GES implements a specific scaling bin that allows
  specifying where scaling will happen inside the chain of effects. By
  default scaling can happen either in the source (if the source doesn't have
  a specific size, like `videotestsrc` or [mixing](ges_track_set_mixing) has
  been disabled) or in the mixing element otherwise, when adding that element
  as an effect, GES guarantees that the scaling will happen in it. This can
  be useful for example if you want to crop the video before scaling or apply
  rounding corners to the video after scaling, etc...

&gt; Note: GES always adds converters (`audioconvert ! audioresample !
&gt; audioconvert` for audio effects and `videoconvert` for video effects) to
&gt; make it simpler for end users.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_effect_new">
        <doc xml:space="preserve">Creates a new #GESEffect from the description of the bin. It should be
possible to determine the type of the effect through the element
'klass' metadata of the GstElements that will be created.
In that corner case, you should use:
#ges_asset_request (GES_TYPE_EFFECT, "audio your ! bin ! description", NULL);
and extract that asset to be in full control.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">a newly created #GESEffect, or %NULL if something went
wrong.</doc>
          <type name="Effect" c:type="GESEffect*"/>
        </return-value>
        <parameters>
          <parameter name="bin_description" transfer-ownership="none">
            <doc xml:space="preserve">The gst-launch like bin description of the effect</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </constructor>
      <property name="bin-description" writable="1" construct-only="1" transfer-ownership="none" default-value="NULL">
        <doc xml:space="preserve">The description of the effect bin with a gst-launch-style
pipeline description.

Example: "videobalance saturation=1.5 hue=+0.5"</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <field name="parent" readable="0" private="1">
        <type name="BaseEffect" c:type="GESBaseEffect"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="EffectPrivate" c:type="GESEffectPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <class name="EffectAsset" c:symbol-prefix="effect_asset" c:type="GESEffectAsset" parent="TrackElementAsset" glib:type-name="GESEffectAsset" glib:get-type="ges_effect_asset_get_type" glib:type-struct="EffectAssetClass">
      <doc xml:space="preserve">This asset has a GStreamer bin-description as ID and is able to determine
to what track type the effect should be used in.</doc>
      <implements name="MetaContainer"/>
      <implements name="Gio.AsyncInitable"/>
      <implements name="Gio.Initable"/>
      <field name="parent_instance">
        <type name="TrackElementAsset" c:type="GESTrackElementAsset"/>
      </field>
      <field name="priv">
        <type name="EffectAssetPrivate" c:type="GESEffectAssetPrivate*"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="EffectAssetClass" c:type="GESEffectAssetClass" glib:is-gtype-struct-for="EffectAsset">
      <field name="parent_class">
        <type name="TrackElementAssetClass" c:type="GESTrackElementAssetClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="EffectAssetPrivate" c:type="GESEffectAssetPrivate" disguised="1" opaque="1"/>
    <record name="EffectClass" c:type="GESEffectClass" glib:is-gtype-struct-for="Effect">
      <field name="parent_class" readable="0" private="1">
        <doc xml:space="preserve">parent class</doc>
        <type name="BaseEffectClass" c:type="GESBaseEffectClass"/>
      </field>
      <field name="rate_properties" readable="0" private="1">
        <type name="GLib.List" c:type="GList*">
          <type name="gpointer" c:type="gpointer"/>
        </type>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <method name="register_rate_property" c:identifier="ges_effect_class_register_rate_property">
        <doc xml:space="preserve">Register an element that can change the rate at which media is playing.
The property type must be float or double, and must be a factor of the
rate, i.e. a value of 2.0 must mean that the media plays twice as fast.
Several properties may be registered for a single element type,
provided they all contribute to the rate as independent factors. For
example, this is true for the "GstPitch::rate" and "GstPitch::tempo"
properties. These are already registered by default in GES, along with
#videorate:rate for #videorate and #scaletempo:rate for #scaletempo.

If such a rate property becomes a child property of a #GESEffect upon
its creation (the element is part of its #GESEffect:bin-description),
it will be automatically registered as a time property (see
ges_base_effect_register_time_property()) and will have its time
translation functions set (see
ges_base_effect_set_time_translation_funcs()) to use the overall rate
of the rate properties. Note that if an effect contains a rate
property as well as a non-rate time property, you should ensure to set
the time translation functions to some other methods using
ges_base_effect_set_time_translation_funcs().

Note, you can obtain a reference to the GESEffectClass using

```
  GES_EFFECT_CLASS (g_type_class_ref (GES_TYPE_EFFECT));
```</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the rate property was successfully registered. When
this method returns %FALSE, a warning is emitted with more information.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="klass" transfer-ownership="none">
            <doc xml:space="preserve">Instance of the GESEffectClass</doc>
            <type name="EffectClass" c:type="GESEffectClass*"/>
          </instance-parameter>
          <parameter name="element_name" transfer-ownership="none">
            <doc xml:space="preserve">The #GstElementFactory name of the element that changes
the rate</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the property that changes the rate</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
    </record>
    <class name="EffectClip" c:symbol-prefix="effect_clip" c:type="GESEffectClip" parent="BaseEffectClip" glib:type-name="GESEffectClip" glib:get-type="ges_effect_clip_get_type" glib:type-struct="EffectClipClass">
      <doc xml:space="preserve">The effect will be applied on the sources that have lower priorities
(higher number) between the inpoint and the end of it.

The asset ID of an effect clip is in the form:

```
  "audio ! bin ! description || video ! bin ! description"
```</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_effect_clip_new">
        <doc xml:space="preserve">Creates a new #GESEffectClip from the description of the bin.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">a newly created #GESEffectClip, or
%NULL if something went wrong.</doc>
          <type name="EffectClip" c:type="GESEffectClip*"/>
        </return-value>
        <parameters>
          <parameter name="video_bin_description" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The gst-launch like bin description of the effect</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="audio_bin_description" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The gst-launch like bin description of the effect</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </constructor>
      <property name="audio-bin-description" writable="1" construct-only="1" transfer-ownership="none" default-value="NULL">
        <doc xml:space="preserve">The description of the audio track of the effect bin with a gst-launch-style
pipeline description. This should be used for test purposes.

Example: "audiopanorama panorama=1.0"</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <property name="video-bin-description" writable="1" construct-only="1" transfer-ownership="none" default-value="NULL">
        <doc xml:space="preserve">The description of the video track of the effect bin with a gst-launch-style
pipeline description. This should be used for test purposes.

Example: "videobalance saturation=1.5 hue=+0.5"</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <field name="parent" readable="0" private="1">
        <type name="BaseEffectClip" c:type="GESBaseEffectClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="EffectClipPrivate" c:type="GESEffectClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="EffectClipClass" c:type="GESEffectClipClass" glib:is-gtype-struct-for="EffectClip">
      <field name="parent_class" readable="0" private="1">
        <type name="BaseEffectClipClass" c:type="GESBaseEffectClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="EffectClipPrivate" c:type="GESEffectClipPrivate" disguised="1" opaque="1"/>
    <record name="EffectPrivate" c:type="GESEffectPrivate" disguised="1" opaque="1"/>
    <enumeration name="Error" c:type="GESError">
      <member name="asset_wrong_id" value="0" c:identifier="GES_ERROR_ASSET_WRONG_ID">
        <doc xml:space="preserve">The ID passed is malformed</doc>
      </member>
      <member name="asset_loading" value="1" c:identifier="GES_ERROR_ASSET_LOADING">
        <doc xml:space="preserve">An error happened while loading the asset</doc>
      </member>
      <member name="formatter_malformed_input_file" value="2" c:identifier="GES_ERROR_FORMATTER_MALFORMED_INPUT_FILE">
        <doc xml:space="preserve">The formatted files was malformed</doc>
      </member>
      <member name="invalid_frame_number" value="3" c:identifier="GES_ERROR_INVALID_FRAME_NUMBER">
        <doc xml:space="preserve">The frame number is invalid</doc>
      </member>
      <member name="negative_layer" value="4" c:identifier="GES_ERROR_NEGATIVE_LAYER">
        <doc xml:space="preserve">The operation would lead to a negative
#GES_TIMELINE_ELEMENT_LAYER_PRIORITY. (Since: 1.18)</doc>
      </member>
      <member name="negative_time" value="5" c:identifier="GES_ERROR_NEGATIVE_TIME">
        <doc xml:space="preserve">The operation would lead to a negative time.
E.g. for the #GESTimelineElement:start #GESTimelineElement:duration or
#GESTimelineElement:in-point. (Since: 1.18)</doc>
      </member>
      <member name="not_enough_internal_content" value="6" c:identifier="GES_ERROR_NOT_ENOUGH_INTERNAL_CONTENT">
        <doc xml:space="preserve">Some #GESTimelineElement does
not have a large enough #GESTimelineElement:max-duration to cover the
desired operation. (Since: 1.18)</doc>
      </member>
      <member name="invalid_overlap_in_track" value="7" c:identifier="GES_ERROR_INVALID_OVERLAP_IN_TRACK">
        <doc xml:space="preserve">The operation would break one of
the overlap conditions for the #GESTimeline. (Since: 1.18)</doc>
      </member>
      <member name="invalid_effect_bin_description" value="8" c:identifier="GES_ERROR_INVALID_EFFECT_BIN_DESCRIPTION">
      </member>
    </enumeration>
    <interface name="Extractable" c:symbol-prefix="extractable" c:type="GESExtractable" glib:type-name="GESExtractable" glib:get-type="ges_extractable_get_type" glib:type-struct="ExtractableInterface">
      <doc xml:space="preserve">A #GObject that implements the #GESExtractable interface can be
extracted from a #GESAsset using ges_asset_extract().

Each extractable type will have its own way of interpreting the
#GESAsset:id of an asset (or, if it is associated with a specific
subclass of #GESAsset, the asset subclass may handle the
interpretation of the #GESAsset:id). By default, the requested asset
#GESAsset:id will be ignored by a #GESExtractable and will be set to
the type name of the extractable instead. Also by default, when the
requested asset is extracted, the returned object will simply be a
newly created default object of that extractable type. You should check
the documentation for each extractable type to see if they differ from
the default.

After the object is extracted, it will have a reference to the asset it
came from, which you can retrieve using ges_extractable_get_asset().</doc>
      <prerequisite name="GObject.InitiallyUnowned"/>
      <virtual-method name="get_id" invoker="get_id">
        <doc xml:space="preserve">Gets the #GESAsset:id of some associated asset. It may be the case
that the object has no set asset, or even that such an asset does not
yet exist in the GES cache. Instead, this will return the asset
#GESAsset:id that is _compatible_ with the current state of the object,
as determined by the #GESExtractable implementer. If it was indeed
extracted from an asset, this should return the same as its
corresponding asset #GESAsset:id.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The #GESAsset:id of some associated #GESAsset
that is compatible with @self's current state.</doc>
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESExtractable</doc>
            <type name="Extractable" c:type="GESExtractable*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_asset">
        <doc xml:space="preserve">This method is called after the #GESAsset of an object is
set. If your class supports the asset of an object changing, then you
can use this method to change the parameters of the object to match the
new asset #GESAsset:id. If setting the asset should be able to fail,
you should implement @set_asset_full instead.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Extractable" c:type="GESExtractable*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_asset_full">
        <doc xml:space="preserve">Like @set_asset, but also allows you to return %FALSE
to indicate a failure to change the object in response to a change in
its asset.</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Extractable" c:type="GESExtractable*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="get_asset" c:identifier="ges_extractable_get_asset">
        <doc xml:space="preserve">Get the asset that has been set on the extractable object.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The asset set on @self, or %NULL
if no asset has been set.</doc>
          <type name="Asset" c:type="GESAsset*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESExtractable</doc>
            <type name="Extractable" c:type="GESExtractable*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_id" c:identifier="ges_extractable_get_id">
        <doc xml:space="preserve">Gets the #GESAsset:id of some associated asset. It may be the case
that the object has no set asset, or even that such an asset does not
yet exist in the GES cache. Instead, this will return the asset
#GESAsset:id that is _compatible_ with the current state of the object,
as determined by the #GESExtractable implementer. If it was indeed
extracted from an asset, this should return the same as its
corresponding asset #GESAsset:id.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The #GESAsset:id of some associated #GESAsset
that is compatible with @self's current state.</doc>
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESExtractable</doc>
            <type name="Extractable" c:type="GESExtractable*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_asset" c:identifier="ges_extractable_set_asset">
        <doc xml:space="preserve">Sets the asset for this extractable object.

When an object is extracted from an asset using ges_asset_extract() its
asset will be automatically set. Note that many classes that implement
#GESExtractable will automatically create their objects using assets
when you call their @new methods. However, you can use this method to
associate an object with a compatible asset if it was created by other
means and does not yet have an asset. Or, for some implementations of
#GESExtractable, you can use this to change the asset of the given
extractable object, which will lead to a change in its state to
match the new asset #GESAsset:id.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @asset could be successfully set on @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESExtractable</doc>
            <type name="Extractable" c:type="GESExtractable*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">The asset to set</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </method>
    </interface>
    <callback name="ExtractableCheckId" c:type="GESExtractableCheckId" throws="1">
      <doc xml:space="preserve">Method for checking that an ID is valid for the given #GESExtractable
type. If the given ID is considered valid, it can be adjusted into some
standard and returned to prevent the creation of separate #GESAsset-s,
with different #GESAsset:id, that would otherwise act the same.

Returns (transfer full) (nullable): The actual #GESAsset:id to set on
any corresponding assets, based on @id, or %NULL if @id is not valid.</doc>
      <return-value transfer-ownership="full">
        <type name="utf8" c:type="gchar*"/>
      </return-value>
      <parameters>
        <parameter name="type" transfer-ownership="none">
          <doc xml:space="preserve">The #GESExtractable type to check @id for</doc>
          <type name="GType" c:type="GType"/>
        </parameter>
        <parameter name="id" transfer-ownership="none">
          <doc xml:space="preserve">The ID to check</doc>
          <type name="utf8" c:type="const gchar*"/>
        </parameter>
      </parameters>
    </callback>
    <record name="ExtractableInterface" c:type="GESExtractableInterface" glib:is-gtype-struct-for="Extractable">
      <field name="parent">
        <type name="GObject.TypeInterface" c:type="GTypeInterface"/>
      </field>
      <field name="asset_type">
        <doc xml:space="preserve">The subclass type of #GESAsset that should be created when
an asset with the corresponding #GESAsset:extractable-type is
requested.</doc>
        <type name="GType" c:type="GType"/>
      </field>
      <field name="check_id">
        <doc xml:space="preserve">The method to call to check whether a given ID is valid as
an asset #GESAsset:id for the given #GESAsset:extractable-type. The
returned ID is the actual #GESAsset:id that is set on the asset. The
default implementation will simply always return the type name of the
#GESAsset:extractable-type, even if the received ID is %NULL. As such,
any given ID is considered valid (or is ignored), but only one is
actually ever set on an asset, which means the given
#GESAsset:extractable-type can only have one associated asset.</doc>
        <type name="ExtractableCheckId" c:type="GESExtractableCheckId"/>
      </field>
      <field name="can_update_asset">
        <doc xml:space="preserve">Whether an object of this class can have its
#GESAsset change over its lifetime. This should be set to %TRUE if one
of the object's parameters that is associated with its ID can change
after construction, which would require an asset with a new ID. Note
that the subclass is required to handle the requesting and setting of
the new asset on the object.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </field>
      <field name="set_asset">
        <doc xml:space="preserve">This method is called after the #GESAsset of an object is
set. If your class supports the asset of an object changing, then you
can use this method to change the parameters of the object to match the
new asset #GESAsset:id. If setting the asset should be able to fail,
you should implement @set_asset_full instead.</doc>
        <callback name="set_asset">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Extractable" c:type="GESExtractable*"/>
            </parameter>
            <parameter name="asset" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="set_asset_full">
        <doc xml:space="preserve">Like @set_asset, but also allows you to return %FALSE
to indicate a failure to change the object in response to a change in
its asset.</doc>
        <callback name="set_asset_full">
          <return-value transfer-ownership="none">
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Extractable" c:type="GESExtractable*"/>
            </parameter>
            <parameter name="asset" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="get_parameters_from_id" introspectable="0">
        <doc xml:space="preserve">The method to call to get the object
properties corresponding to a given asset #GESAsset:id. The default
implementation will simply return no parameters. The default #GESAsset
will call this to set the returned properties on the extracted object,
but other subclasses may ignore this method.</doc>
        <callback name="get_parameters_from_id" introspectable="0">
          <return-value>
            <type name="GObject.Parameter" c:type="GParameter*"/>
          </return-value>
          <parameters>
            <parameter name="id" transfer-ownership="none">
              <type name="utf8" c:type="const gchar*"/>
            </parameter>
            <parameter name="n_params" transfer-ownership="none">
              <type name="guint" c:type="guint*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="get_id">
        <doc xml:space="preserve">The method to fetch the #GESAsset:id of some associated asset.
Note that it may be the case that the object does not have its asset
set, or even that an asset with such an #GESAsset:id does not exist in
the GES cache. Instead, this should return the #GESAsset:id that is
_compatible_ with the current state of the object. The default
implementation simply returns the currently set asset ID, or the type name
of the object, which is what is used as the #GESAsset:id by default,
if no asset is set.</doc>
        <callback name="get_id">
          <return-value transfer-ownership="full">
            <doc xml:space="preserve">The #GESAsset:id of some associated #GESAsset
that is compatible with @self's current state.</doc>
            <type name="utf8" c:type="gchar*"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESExtractable</doc>
              <type name="Extractable" c:type="GESExtractable*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="get_real_extractable_type">
        <doc xml:space="preserve">The method to call to get the actual
#GESAsset:extractable-type an asset should have set, given the
requested #GESAsset:id. The default implementation simply returns the
same type as given. You can overwrite this if it is more appropriate
to extract the object from a subclass, depending on the requested
#GESAsset:id. Note that when an asset is requested, this method will be
called before the other class methods. In particular, this means that
the @check_id and @get_parameters_from_id class methods of the returned
type will be used (instead of our own).</doc>
        <callback name="get_real_extractable_type">
          <return-value transfer-ownership="none">
            <type name="GType" c:type="GType"/>
          </return-value>
          <parameters>
            <parameter name="wanted_type" transfer-ownership="none">
              <type name="GType" c:type="GType"/>
            </parameter>
            <parameter name="id" transfer-ownership="none">
              <type name="utf8" c:type="const gchar*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="register_metas">
        <doc xml:space="preserve">The method to set metadata on an asset. This is called
on initiation of the asset, but before it begins to load its state.</doc>
        <callback name="register_metas">
          <return-value transfer-ownership="none">
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="ExtractableInterface" c:type="GESExtractableInterface*"/>
            </parameter>
            <parameter name="klass" transfer-ownership="none">
              <type name="GObject.ObjectClass" c:type="GObjectClass*"/>
            </parameter>
            <parameter name="asset" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <function-macro name="FRAME_NUMBER_IS_VALID" c:identifier="GES_FRAME_NUMBER_IS_VALID" introspectable="0">
      <doc xml:space="preserve">Tests if a given GESFrameNumber represents a valid frame</doc>
      <parameters>
        <parameter name="frames">
        </parameter>
      </parameters>
    </function-macro>
    <constant name="FRAME_NUMBER_NONE" value="9223372036854775807" c:type="GES_FRAME_NUMBER_NONE">
      <doc xml:space="preserve">Constant to define an undefined frame number</doc>
      <type name="gint64" c:type="gint64"/>
    </constant>
    <callback name="FillTrackElementFunc" c:type="GESFillTrackElementFunc" deprecated="1" deprecated-version="1.18">
      <doc xml:space="preserve">A function that will be called when the nleobject of a corresponding
track element needs to be filled.

The implementer of this function shall add the proper #GstElement to @nleobj
using gst_bin_add().</doc>
      <doc-deprecated xml:space="preserve">This method type is no longer used.</doc-deprecated>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">%TRUE if the implementer successfully filled the @nleobj.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="clip" transfer-ownership="none">
          <doc xml:space="preserve">The #GESClip controlling the track elements</doc>
          <type name="Clip" c:type="GESClip*"/>
        </parameter>
        <parameter name="track_element" transfer-ownership="none">
          <doc xml:space="preserve">The #GESTrackElement</doc>
          <type name="TrackElement" c:type="GESTrackElement*"/>
        </parameter>
        <parameter name="nleobj" transfer-ownership="none">
          <doc xml:space="preserve">The nleobject that needs to be filled</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </parameter>
      </parameters>
    </callback>
    <class name="Formatter" c:symbol-prefix="formatter" c:type="GESFormatter" parent="GObject.InitiallyUnowned" abstract="1" glib:type-name="GESFormatter" glib:get-type="ges_formatter_get_type" glib:type-struct="FormatterClass">
      <doc xml:space="preserve">Base class for timeline data serialization and deserialization.</doc>
      <implements name="Extractable"/>
      <function name="can_load_uri" c:identifier="ges_formatter_can_load_uri" throws="1">
        <doc xml:space="preserve">Checks if there is a #GESFormatter available which can load a #GESTimeline
from the given URI.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">TRUE if there is a #GESFormatter that can support the given uri
or FALSE if not.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">a #gchar * pointing to the URI</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </function>
      <function name="can_save_uri" c:identifier="ges_formatter_can_save_uri" throws="1">
        <doc xml:space="preserve">Returns TRUE if there is a #GESFormatter available which can save a
#GESTimeline to the given URI.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">TRUE if the given @uri is supported, else FALSE.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">a #gchar * pointing to a URI</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </function>
      <function name="get_default" c:identifier="ges_formatter_get_default">
        <doc xml:space="preserve">Get the default #GESAsset to use as formatter. It will return
the asset for the #GESFormatter that has the highest @rank</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The #GESAsset for the formatter with highest @rank</doc>
          <type name="Asset" c:type="GESAsset*"/>
        </return-value>
      </function>
      <virtual-method name="can_load_uri" throws="1">
        <doc xml:space="preserve">Whether the URI can be loaded</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="dummy_instance" transfer-ownership="none">
            <type name="Formatter" c:type="GESFormatter*"/>
          </instance-parameter>
          <parameter name="uri" transfer-ownership="none">
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="load_from_uri" invoker="load_from_uri" deprecated="1" deprecated-version="1.18" throws="1">
        <doc xml:space="preserve">Load data from the given URI into timeline.</doc>
        <doc-deprecated xml:space="preserve">Use @ges_timeline_load_from_uri</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">TRUE if the timeline data was successfully loaded from the URI,
else FALSE.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="formatter" transfer-ownership="none">
            <doc xml:space="preserve">a #GESFormatter</doc>
            <type name="Formatter" c:type="GESFormatter*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">a #gchar * pointing to a URI</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="save_to_uri" invoker="save_to_uri" deprecated="1" deprecated-version="1.18" throws="1">
        <doc xml:space="preserve">Save data from timeline to the given URI.</doc>
        <doc-deprecated xml:space="preserve">Use @ges_timeline_save_to_uri</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">TRUE if the timeline data was successfully saved to the URI
else FALSE.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="formatter" transfer-ownership="none">
            <doc xml:space="preserve">a #GESFormatter</doc>
            <type name="Formatter" c:type="GESFormatter*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">a #gchar * pointing to a URI</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="overwrite" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE to overwrite file if it exists</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="load_from_uri" c:identifier="ges_formatter_load_from_uri" deprecated="1" deprecated-version="1.18" throws="1">
        <doc xml:space="preserve">Load data from the given URI into timeline.</doc>
        <doc-deprecated xml:space="preserve">Use @ges_timeline_load_from_uri</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">TRUE if the timeline data was successfully loaded from the URI,
else FALSE.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="formatter" transfer-ownership="none">
            <doc xml:space="preserve">a #GESFormatter</doc>
            <type name="Formatter" c:type="GESFormatter*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">a #gchar * pointing to a URI</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="save_to_uri" c:identifier="ges_formatter_save_to_uri" deprecated="1" deprecated-version="1.18" throws="1">
        <doc xml:space="preserve">Save data from timeline to the given URI.</doc>
        <doc-deprecated xml:space="preserve">Use @ges_timeline_save_to_uri</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">TRUE if the timeline data was successfully saved to the URI
else FALSE.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="formatter" transfer-ownership="none">
            <doc xml:space="preserve">a #GESFormatter</doc>
            <type name="Formatter" c:type="GESFormatter*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">a #gchar * pointing to a URI</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="overwrite" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE to overwrite file if it exists</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <field name="parent">
        <type name="GObject.InitiallyUnowned" c:type="GInitiallyUnowned"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="FormatterPrivate" c:type="GESFormatterPrivate*"/>
      </field>
      <field name="project" readable="0" private="1">
        <type name="Project" c:type="GESProject*"/>
      </field>
      <field name="timeline" readable="0" private="1">
        <type name="Timeline" c:type="GESTimeline*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <callback name="FormatterCanLoadURIMethod" c:type="GESFormatterCanLoadURIMethod" throws="1">
      <return-value transfer-ownership="none">
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="dummy_instance" transfer-ownership="none">
          <type name="Formatter" c:type="GESFormatter*"/>
        </parameter>
        <parameter name="uri" transfer-ownership="none">
          <type name="utf8" c:type="const gchar*"/>
        </parameter>
      </parameters>
    </callback>
    <record name="FormatterClass" c:type="GESFormatterClass" glib:is-gtype-struct-for="Formatter">
      <doc xml:space="preserve">GES Formatter class. Override the vmethods to implement the formatter functionnality.</doc>
      <field name="parent_class">
        <doc xml:space="preserve">the parent class structure</doc>
        <type name="GObject.InitiallyUnownedClass" c:type="GInitiallyUnownedClass"/>
      </field>
      <field name="can_load_uri">
        <doc xml:space="preserve">Whether the URI can be loaded</doc>
        <type name="FormatterCanLoadURIMethod" c:type="GESFormatterCanLoadURIMethod"/>
      </field>
      <field name="load_from_uri">
        <doc xml:space="preserve">class method to deserialize data from a URI</doc>
        <type name="FormatterLoadFromURIMethod" c:type="GESFormatterLoadFromURIMethod"/>
      </field>
      <field name="save_to_uri">
        <doc xml:space="preserve">class method to serialize data to a URI</doc>
        <type name="FormatterSaveToURIMethod" c:type="GESFormatterSaveToURIMethod"/>
      </field>
      <field name="name" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="description" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="extension" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="mimetype" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="version" readable="0" private="1">
        <type name="gdouble" c:type="gdouble"/>
      </field>
      <field name="rank" readable="0" private="1">
        <type name="Gst.Rank" c:type="GstRank"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <method name="register_metas" c:identifier="ges_formatter_class_register_metas">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="klass" transfer-ownership="none">
            <doc xml:space="preserve">The class to register metas on</doc>
            <type name="FormatterClass" c:type="GESFormatterClass*"/>
          </instance-parameter>
          <parameter name="name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the formatter</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="description" transfer-ownership="none">
            <doc xml:space="preserve">The formatter description</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="extensions" transfer-ownership="none">
            <doc xml:space="preserve">A list of coma separated file extensions handled
by the formatter. The order of the extensions should match the
list of the structures inside @caps</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="caps" transfer-ownership="none">
            <doc xml:space="preserve">The caps the formatter handled, they should match what
gstreamer typefind mechanism will report for the files the formatter
handles.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="version" transfer-ownership="none">
            <doc xml:space="preserve">The version of the formatter</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
          <parameter name="rank" transfer-ownership="none">
            <doc xml:space="preserve">The rank of the formatter</doc>
            <type name="Gst.Rank" c:type="GstRank"/>
          </parameter>
        </parameters>
      </method>
    </record>
    <callback name="FormatterLoadFromURIMethod" c:type="GESFormatterLoadFromURIMethod" throws="1">
      <doc xml:space="preserve">Virtual method for loading a timeline from a given URI.

Every #GESFormatter subclass needs to implement this method.</doc>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">TRUE if the timeline data was successfully loaded from the URI,
else FALSE.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="formatter" transfer-ownership="none">
          <doc xml:space="preserve">a #GESFormatter</doc>
          <type name="Formatter" c:type="GESFormatter*"/>
        </parameter>
        <parameter name="timeline" transfer-ownership="none">
          <doc xml:space="preserve">a #GESTimeline</doc>
          <type name="Timeline" c:type="GESTimeline*"/>
        </parameter>
        <parameter name="uri" transfer-ownership="none">
          <doc xml:space="preserve">a #gchar * pointing to a URI</doc>
          <type name="utf8" c:type="const gchar*"/>
        </parameter>
      </parameters>
    </callback>
    <record name="FormatterPrivate" c:type="GESFormatterPrivate" disguised="1" opaque="1"/>
    <callback name="FormatterSaveToURIMethod" c:type="GESFormatterSaveToURIMethod" throws="1">
      <doc xml:space="preserve">Virtual method for saving a timeline to a uri.

Every #GESFormatter subclass needs to implement this method.</doc>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">TRUE if the timeline data was successfully saved to the URI
else FALSE.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="formatter" transfer-ownership="none">
          <doc xml:space="preserve">a #GESFormatter</doc>
          <type name="Formatter" c:type="GESFormatter*"/>
        </parameter>
        <parameter name="timeline" transfer-ownership="none">
          <doc xml:space="preserve">a #GESTimeline</doc>
          <type name="Timeline" c:type="GESTimeline*"/>
        </parameter>
        <parameter name="uri" transfer-ownership="none">
          <doc xml:space="preserve">a #gchar * pointing to a URI</doc>
          <type name="utf8" c:type="const gchar*"/>
        </parameter>
        <parameter name="overwrite" transfer-ownership="none">
          <doc xml:space="preserve">%TRUE to overwrite file if it exists</doc>
          <type name="gboolean" c:type="gboolean"/>
        </parameter>
      </parameters>
    </callback>
    <record name="FrameCompositionMeta" c:type="GESFrameCompositionMeta" version="1.24">
      <doc xml:space="preserve">Metadata type that holds information about the positioning, size,
transparency and composition operator of a video frame in the timeline
composition.</doc>
      <field name="meta" writable="1">
        <doc xml:space="preserve">the parent #GstMeta.</doc>
        <type name="Gst.Meta" c:type="GstMeta"/>
      </field>
      <field name="alpha" writable="1">
        <type name="gdouble" c:type="gdouble"/>
      </field>
      <field name="posx" writable="1">
        <doc xml:space="preserve">The desired x position.</doc>
        <type name="gdouble" c:type="gdouble"/>
      </field>
      <field name="posy" writable="1">
        <doc xml:space="preserve">The desired y position.</doc>
        <type name="gdouble" c:type="gdouble"/>
      </field>
      <field name="height" writable="1">
        <doc xml:space="preserve">The desired height of the video. -1 means that no scaling should be
applied.</doc>
        <type name="gdouble" c:type="gdouble"/>
      </field>
      <field name="width" writable="1">
        <doc xml:space="preserve">The desired width of the video. -1 means that no scaling should beapplied
applied.</doc>
        <type name="gdouble" c:type="gdouble"/>
      </field>
      <field name="zorder" writable="1">
        <doc xml:space="preserve">The desired z order.</doc>
        <type name="guint" c:type="guint"/>
      </field>
      <field name="operator" writable="1">
        <doc xml:space="preserve">The blending operator for the source.</doc>
        <type name="gint" c:type="gint"/>
      </field>
    </record>
    <class name="Group" c:symbol-prefix="group" c:type="GESGroup" parent="Container" glib:type-name="GESGroup" glib:get-type="ges_group_get_type" glib:type-struct="GroupClass">
      <doc xml:space="preserve">A #GESGroup controls one or more #GESContainer-s (usually #GESClip-s,
but it can also control other #GESGroup-s). Its children must share
the same #GESTimeline, but can otherwise lie in separate #GESLayer-s
and have different timings.

To initialise a group, you may want to use ges_container_group(),
and similarly use ges_container_ungroup() to dispose of it.

A group will maintain the relative #GESTimelineElement:start times of
its children, as well as their relative layer #GESLayer:priority.
Therefore, if one of its children has its #GESTimelineElement:start
set, all other children will have their #GESTimelineElement:start
shifted by the same amount. Similarly, if one of its children moves to
a new layer, the other children will also change layers to maintain the
difference in their layer priorities. For example, if a child moves
from a layer with #GESLayer:priority 1 to a layer with priority 3, then
another child that was in a layer with priority 0 will move to the
layer with priority 2.

The #GESGroup:start of a group refers to the earliest start
time of its children. If the group's #GESGroup:start is set, all the
children will be shifted equally such that the earliest start time
will match the set value. The #GESGroup:duration of a group is the
difference between the earliest start time and latest end time of its
children. If the group's #GESGroup:duration is increased, the children
whose end time matches the end of the group will be extended
accordingly. If it is decreased, then any child whose end time exceeds
the new end time will also have their duration decreased accordingly.

A group may span several layers, but for methods such as
ges_timeline_element_get_layer_priority() and
ges_timeline_element_edit() a group is considered to have a layer
priority that is the highest #GESLayer:priority (numerically, the
smallest) of all the layers it spans.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_group_new">
        <doc xml:space="preserve">Created a new empty group. You may wish to use
ges_container_group() instead, which can return a different
#GESContainer subclass if possible.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The new empty group.</doc>
          <type name="Group" c:type="GESGroup*"/>
        </return-value>
      </constructor>
      <property name="duration" writable="1" transfer-ownership="none" default-value="18446744073709551615">
        <doc xml:space="preserve">An overwrite of the #GESTimelineElement:duration property. For a
#GESGroup, this is the difference between the earliest
#GESTimelineElement:start time and the latest end time (given by
#GESTimelineElement:start + #GESTimelineElement:duration) amongst
its children.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="in-point" writable="1" transfer-ownership="none" default-value="0">
        <doc xml:space="preserve">An overwrite of the #GESTimelineElement:in-point property. This has
no meaning for a group and should not be set.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="max-duration" writable="1" construct="1" transfer-ownership="none" default-value="18446744073709551615">
        <doc xml:space="preserve">An overwrite of the #GESTimelineElement:max-duration property. This
has no meaning for a group and should not be set.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="priority" writable="1" transfer-ownership="none" default-value="0">
        <doc xml:space="preserve">An overwrite of the #GESTimelineElement:priority property.
Setting #GESTimelineElement priorities is deprecated as all priority
management is now done by GES itself.</doc>
        <type name="guint" c:type="guint"/>
      </property>
      <property name="start" writable="1" transfer-ownership="none" default-value="0">
        <doc xml:space="preserve">An overwrite of the #GESTimelineElement:start property. For a
#GESGroup, this is the earliest #GESTimelineElement:start time
amongst its children.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <field name="parent">
        <type name="Container" c:type="GESContainer"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="GroupPrivate" c:type="GESGroupPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="GroupClass" c:type="GESGroupClass" glib:is-gtype-struct-for="Group">
      <field name="parent_class">
        <type name="ContainerClass" c:type="GESContainerClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="GroupPrivate" c:type="GESGroupPrivate" disguised="1" opaque="1"/>
    <class name="ImageSource" c:symbol-prefix="image_source" c:type="GESImageSource" deprecated="1" deprecated-version="1.18" parent="VideoSource" glib:type-name="GESImageSource" glib:get-type="ges_image_source_get_type" glib:type-struct="ImageSourceClass">
      <doc xml:space="preserve">Outputs the video stream from a given file as a still frame. The frame chosen
will be determined by the in-point property on the track element. For image
files, do not set the in-point property.</doc>
      <doc-deprecated xml:space="preserve">This won't be used anymore and has been replaced by
#GESUriSource instead which now plugs an `imagefreeze` element when
#ges_uri_source_asset_is_image returns %TRUE.</doc-deprecated>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <property name="uri" writable="1" construct-only="1" transfer-ownership="none" default-value="NULL">
        <doc xml:space="preserve">The location of the file/resource to use.</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <field name="parent" readable="0" private="1">
        <type name="VideoSource" c:type="GESVideoSource"/>
      </field>
      <field name="uri" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="ImageSourcePrivate" c:type="GESImageSourcePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="ImageSourceClass" c:type="GESImageSourceClass" glib:is-gtype-struct-for="ImageSource">
      <field name="parent_class">
        <type name="VideoSourceClass" c:type="GESVideoSourceClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="ImageSourcePrivate" c:type="GESImageSourcePrivate" disguised="1" opaque="1"/>
    <class name="Layer" c:symbol-prefix="layer" c:type="GESLayer" parent="GObject.InitiallyUnowned" glib:type-name="GESLayer" glib:get-type="ges_layer_get_type" glib:type-struct="LayerClass">
      <doc xml:space="preserve">#GESLayer-s are responsible for collecting and ordering #GESClip-s.

A layer within a timeline will have an associated priority,
corresponding to their index within the timeline. A layer with the
index/priority 0 will have the highest priority and the layer with the
largest index will have the lowest priority (the order of priorities,
in this sense, is the _reverse_ of the numerical ordering of the
indices). ges_timeline_move_layer() should be used if you wish to
change how layers are prioritised in a timeline.

Layers with higher priorities will have their content priorities
over content from lower priority layers, similar to how layers are
used in image editing. For example, if two separate layers both
display video content, then the layer with the higher priority will
have its images shown first. The other layer will only have its image
shown if the higher priority layer has no content at the given
playtime, or is transparent in some way. Audio content in separate
layers will simply play in addition.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_layer_new">
        <doc xml:space="preserve">Creates a new layer.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">A new layer.</doc>
          <type name="Layer" c:type="GESLayer*"/>
        </return-value>
      </constructor>
      <virtual-method name="get_objects" introspectable="0">
        <doc xml:space="preserve">method to get the objects contained in the layer</doc>
        <return-value>
          <type name="GLib.List" c:type="GList*">
            <type name="gpointer" c:type="gpointer"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="object_added">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="object" transfer-ownership="none">
            <type name="Clip" c:type="GESClip*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="object_removed">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="object" transfer-ownership="none">
            <type name="Clip" c:type="GESClip*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="add_asset" c:identifier="ges_layer_add_asset">
        <doc xml:space="preserve">See ges_layer_add_asset_full(), which also gives an error.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created clip.</doc>
          <type name="Clip" c:type="GESClip*"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">The asset to extract the new clip from</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement:start value to set on the new clip
If `start == #GST_CLOCK_TIME_NONE`, it will be added to the end
of @layer, i.e. it will be set to @layer's duration</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
          <parameter name="inpoint" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement:in-point value to set on the new
clip</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
          <parameter name="duration" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement:duration value to set on the new
clip</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
          <parameter name="track_types" transfer-ownership="none">
            <doc xml:space="preserve">The #GESClip:supported-formats to set on the the new
clip, or #GES_TRACK_TYPE_UNKNOWN to use the default</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_asset_full" c:identifier="ges_layer_add_asset_full" version="1.18" throws="1">
        <doc xml:space="preserve">Extracts a new clip from an asset and adds it to the layer with
the given properties.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The newly created clip.</doc>
          <type name="Clip" c:type="GESClip*"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">The asset to extract the new clip from</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement:start value to set on the new clip
If `start == #GST_CLOCK_TIME_NONE`, it will be added to the end
of @layer, i.e. it will be set to @layer's duration</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
          <parameter name="inpoint" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement:in-point value to set on the new
clip</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
          <parameter name="duration" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement:duration value to set on the new
clip</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
          <parameter name="track_types" transfer-ownership="none">
            <doc xml:space="preserve">The #GESClip:supported-formats to set on the the new
clip, or #GES_TRACK_TYPE_UNKNOWN to use the default</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_clip" c:identifier="ges_layer_add_clip">
        <doc xml:space="preserve">See ges_layer_add_clip_full(), which also gives an error.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @clip was properly added to @layer, or %FALSE
if @layer refused to add @clip.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The clip to add</doc>
            <type name="Clip" c:type="GESClip*"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_clip_full" c:identifier="ges_layer_add_clip_full" version="1.18" throws="1">
        <doc xml:space="preserve">Adds the given clip to the layer. If the method succeeds, the layer
will take ownership of the clip.

This method will fail and return %FALSE if @clip already resides in
some layer. It can also fail if the additional clip breaks some
compositional rules (see #GESTimelineElement).</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @clip was properly added to @layer, or %FALSE
if @layer refused to add @clip.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The clip to add</doc>
            <type name="Clip" c:type="GESClip*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_active_for_track" c:identifier="ges_layer_get_active_for_track" version="1.18">
        <doc xml:space="preserve">Gets whether the layer is active for the given track. See
ges_layer_set_active_for_tracks().</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @layer is active for @track, or %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrack to check if @layer is currently active for</doc>
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_auto_transition" c:identifier="ges_layer_get_auto_transition" glib:get-property="auto-transition">
        <doc xml:space="preserve">Gets the #GESLayer:auto-transition of the layer.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if transitions are automatically added to @layer.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_clips" c:identifier="ges_layer_get_clips">
        <doc xml:space="preserve">Get the #GESClip-s contained in this layer.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A list of clips in
@layer.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Clip"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_clips_in_interval" c:identifier="ges_layer_get_clips_in_interval">
        <doc xml:space="preserve">Gets the clips within the layer that appear between @start and @end.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A list of #GESClip-s
that intersect the interval `[start, end)` in @layer.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Clip"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">Start of the interval</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
          <parameter name="end" transfer-ownership="none">
            <doc xml:space="preserve">End of the interval</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_duration" c:identifier="ges_layer_get_duration">
        <doc xml:space="preserve">Retrieves the duration of the layer, which is the difference
between the start of the layer (always time 0) and the end (which will
be the end time of the final clip).</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The duration of @layer.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The layer to get the duration from</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_priority" c:identifier="ges_layer_get_priority" glib:get-property="priority">
        <doc xml:space="preserve">Get the priority of the layer. When inside a timeline, this is its
index in the timeline. See ges_timeline_move_layer().</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The priority of @layer within its timeline.</doc>
          <type name="guint" c:type="guint"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_timeline" c:identifier="ges_layer_get_timeline">
        <doc xml:space="preserve">Gets the timeline that the layer is a part of.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The timeline that @layer
is currently part of, or %NULL if it is not associated with any
timeline.</doc>
          <type name="Timeline" c:type="GESTimeline*"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_empty" c:identifier="ges_layer_is_empty">
        <doc xml:space="preserve">Convenience method to check if the layer is empty (doesn't contain
any #GESClip), or not.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @layer is empty, %FALSE if it contains at least
one clip.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer to check</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="remove_clip" c:identifier="ges_layer_remove_clip">
        <doc xml:space="preserve">Removes the given clip from the layer.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @clip was removed from @layer, or %FALSE if the
operation failed.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The clip to remove</doc>
            <type name="Clip" c:type="GESClip*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_active_for_tracks" c:identifier="ges_layer_set_active_for_tracks" version="1.18">
        <doc xml:space="preserve">Activate or deactivate track elements in @tracks (or in all tracks if @tracks
is %NULL).

When a layer is deactivated for a track, all the #GESTrackElement-s in
the track that belong to a #GESClip in the layer will no longer be
active in the track, regardless of their individual
#GESTrackElement:active value.

Note that by default a layer will be active for all of its
timeline's tracks.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the operation worked %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="active" transfer-ownership="none">
            <doc xml:space="preserve">Whether elements in @tracks should be active or not</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
          <parameter name="tracks" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The list of
tracks @layer should be (de-)active in, or %NULL to include all the tracks
in the @layer's timeline</doc>
            <type name="GLib.List" c:type="GList*">
              <type name="Track"/>
            </type>
          </parameter>
        </parameters>
      </method>
      <method name="set_auto_transition" c:identifier="ges_layer_set_auto_transition" glib:set-property="auto-transition">
        <doc xml:space="preserve">Sets #GESLayer:auto-transition for the layer. Use
ges_timeline_set_auto_transition() if you want all layers within a
#GESTimeline to have #GESLayer:auto-transition set to %TRUE. Use this
method if you want different values for different layers (and make sure
to keep #GESTimeline:auto-transition as %FALSE for the corresponding
timeline).</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="auto_transition" transfer-ownership="none">
            <doc xml:space="preserve">Whether transitions should be automatically added to
the layer</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_priority" c:identifier="ges_layer_set_priority" glib:set-property="priority" deprecated="1" deprecated-version="1.16.0">
        <doc xml:space="preserve">Sets the layer to the given priority. See #GESLayer:priority.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_move_layer instead. This deprecation means
that you will not need to handle layer priorities at all yourself, GES
will make sure there is never 'gaps' between layer priorities.</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The #GESLayer</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="priority" transfer-ownership="none">
            <doc xml:space="preserve">The priority to set</doc>
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_timeline" c:identifier="ges_layer_set_timeline">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="layer" transfer-ownership="none">
            <type name="Layer" c:type="GESLayer*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
        </parameters>
      </method>
      <property name="auto-transition" writable="1" transfer-ownership="none" setter="set_auto_transition" getter="get_auto_transition" default-value="FALSE">
        <doc xml:space="preserve">Whether to automatically create a #GESTransitionClip whenever two
#GESSource-s that both belong to a #GESClip in the layer overlap.
See #GESTimeline for what counts as an overlap.

When a layer is added to a #GESTimeline, if this property is left as
%FALSE, but the timeline's #GESTimeline:auto-transition is %TRUE, it
will be set to %TRUE as well.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="priority" deprecated="1" deprecated-version="1.16.0" writable="1" transfer-ownership="none" setter="set_priority" getter="get_priority" default-value="0">
        <doc xml:space="preserve">The priority of the layer in the #GESTimeline. 0 is the highest
priority. Conceptually, a timeline is a stack of layers,
and the priority of the layer represents its position in the stack. Two
layers should not have the same priority within a given GESTimeline.

Note that the timeline needs to be committed (with #ges_timeline_commit)
for the change to be taken into account.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_move_layer instead. This deprecation means
that you will not need to handle layer priorities at all yourself, GES
will make sure there is never 'gaps' between layer priorities.</doc-deprecated>
        <type name="guint" c:type="guint"/>
      </property>
      <field name="parent">
        <type name="GObject.InitiallyUnowned" c:type="GInitiallyUnowned"/>
      </field>
      <field name="timeline">
        <doc xml:space="preserve">the #GESTimeline where this layer is being used.</doc>
        <type name="Timeline" c:type="GESTimeline*"/>
      </field>
      <field name="min_nle_priority">
        <type name="guint32" c:type="guint32"/>
      </field>
      <field name="max_nle_priority">
        <type name="guint32" c:type="guint32"/>
      </field>
      <field name="priv">
        <type name="LayerPrivate" c:type="GESLayerPrivate*"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <glib:signal name="active-changed" when="first" version="1.18">
        <doc xml:space="preserve">Will be emitted whenever the layer is activated or deactivated
for some #GESTrack. See ges_layer_set_active_for_tracks().</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="active" transfer-ownership="none">
            <doc xml:space="preserve">Whether @layer has been made active or de-active in the @tracks</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
          <parameter name="tracks" transfer-ownership="none">
            <doc xml:space="preserve">A list of #GESTrack
which have been activated or deactivated</doc>
            <array name="GLib.PtrArray">
              <type name="Track"/>
            </array>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="clip-added" when="first">
        <doc xml:space="preserve">Will be emitted after the clip is added to the layer.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The clip that was added</doc>
            <type name="Clip"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="clip-removed" when="first">
        <doc xml:space="preserve">Will be emitted after the clip is removed from the layer.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The clip that was removed</doc>
            <type name="Clip"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <record name="LayerClass" c:type="GESLayerClass" glib:is-gtype-struct-for="Layer">
      <doc xml:space="preserve">Subclasses can override the @get_objects if they can provide a more
efficient way of providing the list of contained #GESClip-s.</doc>
      <field name="parent_class" readable="0" private="1">
        <type name="GObject.InitiallyUnownedClass" c:type="GInitiallyUnownedClass"/>
      </field>
      <field name="get_objects" introspectable="0">
        <doc xml:space="preserve">method to get the objects contained in the layer</doc>
        <callback name="get_objects" introspectable="0">
          <return-value>
            <type name="GLib.List" c:type="GList*">
              <type name="gpointer" c:type="gpointer"/>
            </type>
          </return-value>
          <parameters>
            <parameter name="layer" transfer-ownership="none">
              <type name="Layer" c:type="GESLayer*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="object_added">
        <callback name="object_added">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="layer" transfer-ownership="none">
              <type name="Layer" c:type="GESLayer*"/>
            </parameter>
            <parameter name="object" transfer-ownership="none">
              <type name="Clip" c:type="GESClip*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="object_removed">
        <callback name="object_removed">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="layer" transfer-ownership="none">
              <type name="Layer" c:type="GESLayer*"/>
            </parameter>
            <parameter name="object" transfer-ownership="none">
              <type name="Clip" c:type="GESClip*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="LayerPrivate" c:type="GESLayerPrivate" disguised="1" opaque="1"/>
    <constant name="META_DESCRIPTION" value="description" c:type="GES_META_DESCRIPTION">
      <doc xml:space="preserve">The description of the object, to be used in various contexts (string).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_FORMATTER_EXTENSION" value="extension" c:type="GES_META_FORMATTER_EXTENSION">
      <doc xml:space="preserve">The file extension of files produced by a #GESFormatter (string).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_FORMATTER_MIMETYPE" value="mimetype" c:type="GES_META_FORMATTER_MIMETYPE">
      <doc xml:space="preserve">The mimetype used for the file produced by a #GESFormatter (string).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_FORMATTER_NAME" value="name" c:type="GES_META_FORMATTER_NAME">
      <doc xml:space="preserve">The name of a formatter, used as the #GESAsset:id for #GESFormatter
assets (string).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_FORMATTER_RANK" value="rank" c:type="GES_META_FORMATTER_RANK">
      <doc xml:space="preserve">The rank of a #GESFormatter (a #GstRank).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_FORMATTER_VERSION" value="version" c:type="GES_META_FORMATTER_VERSION">
      <doc xml:space="preserve">The version of a #GESFormatter (double).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_FORMAT_VERSION" value="format-version" c:type="GES_META_FORMAT_VERSION">
      <doc xml:space="preserve">The version of the format in which a project is serialized (string).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_MARKER_COLOR" value="marker-color" c:type="GES_META_MARKER_COLOR">
      <doc xml:space="preserve">The ARGB color of a #GESMarker (an AARRGGBB hex as a uint).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_VOLUME" value="volume" c:type="GES_META_VOLUME">
      <doc xml:space="preserve">The volume for a #GESTrack or a #GESLayer (float).</doc>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="META_VOLUME_DEFAULT" value="1.000000" c:type="GES_META_VOLUME_DEFAULT">
      <doc xml:space="preserve">The default volume for a #GESTrack or a #GESLayer as a float.</doc>
      <type name="gdouble" c:type="gdouble"/>
    </constant>
    <constant name="MULTI_FILE_URI_PREFIX" value="multifile://" c:type="GES_MULTI_FILE_URI_PREFIX">
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <class name="Marker" c:symbol-prefix="marker" c:type="GESMarker" version="1.18" parent="GObject.Object" glib:type-name="GESMarker" glib:get-type="ges_marker_get_type" glib:type-struct="MarkerClass">
      <doc xml:space="preserve">A timed #GESMetaContainer object.</doc>
      <implements name="MetaContainer"/>
      <property name="position" version="1.18" transfer-ownership="none" default-value="18446744073709551615">
        <doc xml:space="preserve">Current position (in nanoseconds) of the #GESMarker</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
    </class>
    <record name="MarkerClass" c:type="GESMarkerClass" glib:is-gtype-struct-for="Marker">
      <field name="parent_class">
        <type name="GObject.ObjectClass" c:type="GObjectClass"/>
      </field>
    </record>
    <bitfield name="MarkerFlags" version="1.20" glib:type-name="GESMarkerFlags" glib:get-type="ges_marker_flags_get_type" c:type="GESMarkerFlags">
      <member name="none" value="0" c:identifier="GES_MARKER_FLAG_NONE" glib:nick="none" glib:name="GES_MARKER_FLAG_NONE">
        <doc xml:space="preserve">Marker does not serve any special purpose.</doc>
      </member>
      <member name="snappable" value="1" c:identifier="GES_MARKER_FLAG_SNAPPABLE" glib:nick="snappable" glib:name="GES_MARKER_FLAG_SNAPPABLE">
        <doc xml:space="preserve">Marker can be a snapping target.</doc>
      </member>
    </bitfield>
    <class name="MarkerList" c:symbol-prefix="marker_list" c:type="GESMarkerList" version="1.18" parent="GObject.Object" glib:type-name="GESMarkerList" glib:get-type="ges_marker_list_get_type" glib:type-struct="MarkerListClass">
      <doc xml:space="preserve">A #GESMarker can be colored by setting the #GES_META_MARKER_COLOR meta.</doc>
      <constructor name="new" c:identifier="ges_marker_list_new" version="1.18">
        <doc xml:space="preserve">Creates a new #GESMarkerList.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A new #GESMarkerList</doc>
          <type name="MarkerList" c:type="GESMarkerList*"/>
        </return-value>
      </constructor>
      <method name="add" c:identifier="ges_marker_list_add" version="1.18">
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The newly-added marker, the list keeps ownership
of the marker</doc>
          <type name="Marker" c:type="GESMarker*"/>
        </return-value>
        <parameters>
          <instance-parameter name="list" transfer-ownership="none">
            <type name="MarkerList" c:type="GESMarkerList*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The position of the new marker</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_markers" c:identifier="ges_marker_list_get_markers" version="1.18">
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">a #GList
of the #GESMarker within the GESMarkerList. The user will have
to unref each #GESMarker and free the #GList.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Marker"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="list" transfer-ownership="none">
            <type name="MarkerList" c:type="GESMarkerList*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="move" c:identifier="ges_marker_list_move" version="1.18">
        <doc xml:space="preserve">Moves a @marker in a @list to a new @position</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the marker could be moved, %FALSE otherwise
  (if the marker was not present in the list for example)</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="list" transfer-ownership="none">
            <type name="MarkerList" c:type="GESMarkerList*"/>
          </instance-parameter>
          <parameter name="marker" transfer-ownership="none">
            <type name="Marker" c:type="GESMarker*"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove" c:identifier="ges_marker_list_remove" version="1.18">
        <doc xml:space="preserve">Removes @marker from @list, this decreases the refcount of the
marker by 1.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the marker could be removed, %FALSE otherwise
  (if the marker was not present in the list for example)</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="list" transfer-ownership="none">
            <type name="MarkerList" c:type="GESMarkerList*"/>
          </instance-parameter>
          <parameter name="marker" transfer-ownership="none">
            <type name="Marker" c:type="GESMarker*"/>
          </parameter>
        </parameters>
      </method>
      <method name="size" c:identifier="ges_marker_list_size" version="1.18">
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The number of markers in @list</doc>
          <type name="guint" c:type="guint"/>
        </return-value>
        <parameters>
          <instance-parameter name="list" transfer-ownership="none">
            <type name="MarkerList" c:type="GESMarkerList*"/>
          </instance-parameter>
        </parameters>
      </method>
      <property name="flags" version="1.20" writable="1" construct="1" transfer-ownership="none" default-value="GES_MARKER_FLAG_NONE">
        <doc xml:space="preserve">Flags indicating how markers on the list should be treated.</doc>
        <type name="MarkerFlags"/>
      </property>
      <glib:signal name="marker-added" when="first" version="1.18">
        <doc xml:space="preserve">Will be emitted after the marker was added to the marker-list.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">the position of the added marker</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
          <parameter name="marker" transfer-ownership="none">
            <doc xml:space="preserve">the #GESMarker that was added.</doc>
            <type name="Marker"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="marker-moved" when="first" version="1.18">
        <doc xml:space="preserve">Will be emitted after the marker was moved to.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="previous_position" transfer-ownership="none">
            <doc xml:space="preserve">the previous position of the marker</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
          <parameter name="new_position" transfer-ownership="none">
            <doc xml:space="preserve">the new position of the marker</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
          <parameter name="marker" transfer-ownership="none">
            <doc xml:space="preserve">the #GESMarker that was moved.</doc>
            <type name="Marker"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="marker-removed" when="first" version="1.18">
        <doc xml:space="preserve">Will be emitted after the marker was removed the marker-list.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="marker" transfer-ownership="none">
            <doc xml:space="preserve">the #GESMarker that was removed.</doc>
            <type name="Marker"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <record name="MarkerListClass" c:type="GESMarkerListClass" glib:is-gtype-struct-for="MarkerList">
      <field name="parent_class">
        <type name="GObject.ObjectClass" c:type="GObjectClass"/>
      </field>
    </record>
    <interface name="MetaContainer" c:symbol-prefix="meta_container" c:type="GESMetaContainer" glib:type-name="GESMetaContainer" glib:get-type="ges_meta_container_get_type" glib:type-struct="MetaContainerInterface">
      <doc xml:space="preserve">A #GObject that implements #GESMetaContainer can have metadata set on
it, that is data that is unimportant to its function within GES, but
may hold some useful information. In particular,
ges_meta_container_set_meta() can be used to store any #GValue under
any generic field (specified by a string key). The same method can also
be used to remove the field by passing %NULL. A number of convenience
methods are also provided to make it easier to set common value types.
The metadata can then be read with ges_meta_container_get_meta() and
similar convenience methods.

## Registered Fields

By default, any #GValue can be set for a metadata field. However, you
can register some fields as static, that is they only allow values of a
specific type to be set under them, using
ges_meta_container_register_meta() or
ges_meta_container_register_static_meta(). The set #GESMetaFlag will
determine whether the value can be changed, but even if it can be
changed, it must be changed to a value of the same type.

Internally, some GES objects will be initialized with static metadata
fields. These will correspond to some standard keys, such as
#GES_META_VOLUME.</doc>
      <method name="add_metas_from_string" c:identifier="ges_meta_container_add_metas_from_string">
        <doc xml:space="preserve">Deserializes the given string, and adds and sets the found fields and
their values on the container. The string should be the return of
ges_meta_container_metas_to_string().</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the fields in @str was successfully deserialized
and added to @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="str" transfer-ownership="none">
            <doc xml:space="preserve">A string to deserialize and add to @container</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="check_meta_registered" c:identifier="ges_meta_container_check_meta_registered">
        <doc xml:space="preserve">Checks whether the specified field has been registered as static, and
gets the registered type and flags of the field, as used in
ges_meta_container_register_meta() and
ges_meta_container_register_static_meta().</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field has been registered on
@container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to check</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="flags" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">A destination to get the registered flags of
the field, or %NULL to ignore</doc>
            <type name="MetaFlag" c:type="GESMetaFlag*"/>
          </parameter>
          <parameter name="type" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">A destination to get the registered type of
the field, or %NULL to ignore</doc>
            <type name="GType" c:type="GType*"/>
          </parameter>
        </parameters>
      </method>
      <method name="foreach" c:identifier="ges_meta_container_foreach">
        <doc xml:space="preserve">Calls the given function on each of the meta container's set metadata
fields.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="func" transfer-ownership="none" scope="call" closure="1">
            <doc xml:space="preserve">A function to call on each of @container's set
metadata fields</doc>
            <type name="MetaForeachFunc" c:type="GESMetaForeachFunc"/>
          </parameter>
          <parameter name="user_data" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">User data to send to @func</doc>
            <type name="gpointer" c:type="gpointer"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_boolean" c:identifier="ges_meta_container_get_boolean">
        <doc xml:space="preserve">Gets the current boolean value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the boolean value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="gboolean" c:type="gboolean*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_date" c:identifier="ges_meta_container_get_date">
        <doc xml:space="preserve">Gets the current date value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the date value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="GLib.Date" c:type="GDate**"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_date_time" c:identifier="ges_meta_container_get_date_time">
        <doc xml:space="preserve">Gets the current date time value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the date time value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="Gst.DateTime" c:type="GstDateTime**"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_double" c:identifier="ges_meta_container_get_double">
        <doc xml:space="preserve">Gets the current double value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the double value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="gdouble" c:type="gdouble*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_float" c:identifier="ges_meta_container_get_float">
        <doc xml:space="preserve">Gets the current float value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the float value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="gfloat" c:type="gfloat*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_int" c:identifier="ges_meta_container_get_int">
        <doc xml:space="preserve">Gets the current int value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the int value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_int64" c:identifier="ges_meta_container_get_int64">
        <doc xml:space="preserve">Gets the current int64 value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the int64 value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="gint64" c:type="gint64*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_marker_list" c:identifier="ges_meta_container_get_marker_list" version="1.18">
        <doc xml:space="preserve">Gets the current marker list value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">A copy of the marker list value under @key,
or %NULL if it could not be fetched.</doc>
          <type name="MarkerList" c:type="GESMarkerList*"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="key" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_meta" c:identifier="ges_meta_container_get_meta">
        <doc xml:space="preserve">Gets the current value of the specified field of the meta container.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The value under @key, or %NULL if @container
does not have the field set.</doc>
          <type name="GObject.Value" c:type="const GValue*"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="key" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_string" c:identifier="ges_meta_container_get_string">
        <doc xml:space="preserve">Gets the current string value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The string value under @meta_item, or %NULL
if it could not be fetched.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_uint" c:identifier="ges_meta_container_get_uint">
        <doc xml:space="preserve">Gets the current uint value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the uint value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="guint" c:type="guint*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_uint64" c:identifier="ges_meta_container_get_uint64">
        <doc xml:space="preserve">Gets the current uint64 value of the specified field of the meta
container. If the field does not have a set value, or it is of the
wrong type, the method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the uint64 value under @meta_item was copied
to @dest.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="dest" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">Destination into which the value under @meta_item
should be copied.</doc>
            <type name="guint64" c:type="guint64*"/>
          </parameter>
        </parameters>
      </method>
      <method name="metas_to_string" c:identifier="ges_meta_container_metas_to_string">
        <doc xml:space="preserve">Serializes the set metadata fields of the meta container to a string.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A serialized @container.</doc>
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="register_meta" c:identifier="ges_meta_container_register_meta">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given value, and registers the field to only hold a value of the
same type. After calling this, only values of the same type as @value
can be set for this field. The given flags can be set to make this
field only readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold @value types, with the given @flags, and the
field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="GObject.Value" c:type="const GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_boolean" c:identifier="ges_meta_container_register_meta_boolean">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given boolean value, and registers the field to only hold a boolean
typed value. After calling this, only boolean values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold boolean typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_date" c:identifier="ges_meta_container_register_meta_date">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given date value, and registers the field to only hold a date
typed value. After calling this, only date values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold date typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="GLib.Date" c:type="const GDate*"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_date_time" c:identifier="ges_meta_container_register_meta_date_time">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given date time value, and registers the field to only hold a date time
typed value. After calling this, only date time values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold date time typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="Gst.DateTime" c:type="const GstDateTime*"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_double" c:identifier="ges_meta_container_register_meta_double">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given double value, and registers the field to only hold a double
typed value. After calling this, only double values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold double typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_float" c:identifier="ges_meta_container_register_meta_float">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given float value, and registers the field to only hold a float
typed value. After calling this, only float values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold float typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="gfloat" c:type="gfloat"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_int" c:identifier="ges_meta_container_register_meta_int">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given int value, and registers the field to only hold an int
typed value. After calling this, only int values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold int typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_int64" c:identifier="ges_meta_container_register_meta_int64">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given int64 value, and registers the field to only hold an int64
typed value. After calling this, only int64 values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold int64 typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="gint64" c:type="gint64"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_string" c:identifier="ges_meta_container_register_meta_string">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given string value, and registers the field to only hold a string
typed value. After calling this, only string values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold string typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_uint" c:identifier="ges_meta_container_register_meta_uint">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given uint value, and registers the field to only hold a uint
typed value. After calling this, only uint values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold uint typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_meta_uint64" c:identifier="ges_meta_container_register_meta_uint64">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given uint64 value, and registers the field to only hold a uint64
typed value. After calling this, only uint64 values can be set for
this field. The given flags can be set to make this field only
readable after calling this method.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold uint64 typed values, with the given @flags,
and the field was successfully set to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set for the registered field</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </method>
      <method name="register_static_meta" c:identifier="ges_meta_container_register_static_meta" version="1.18">
        <doc xml:space="preserve">Registers a static metadata field on the container to only hold the
specified type. After calling this, setting a value under this field
can only succeed if its type matches the registered type of the field.

Unlike ges_meta_container_register_meta(), no (initial) value is set
for this field, which means you can use this method to reserve the
space to be _optionally_ set later.

Note that if a value has already been set for the field being
registered, then its type must match the registering type, and its
value will be left in place. If the field has no set value, then
you will likely want to include #GES_META_WRITABLE in @flags to allow
the value to be set later.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the @meta_item field was successfully registered on
@container to only hold @type values, with the given @flags.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve">Flags to be used for the registered field</doc>
            <type name="MetaFlag" c:type="GESMetaFlag"/>
          </parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to register</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">The required value type for the registered field</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_boolean" c:identifier="ges_meta_container_set_boolean">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given boolean value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_date" c:identifier="ges_meta_container_set_date">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given date value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="GLib.Date" c:type="const GDate*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_date_time" c:identifier="ges_meta_container_set_date_time">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given date time value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="Gst.DateTime" c:type="const GstDateTime*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_double" c:identifier="ges_meta_container_set_double">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given double value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_float" c:identifier="ges_meta_container_set_float">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given float value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="gfloat" c:type="gfloat"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_int" c:identifier="ges_meta_container_set_int">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given int value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_int64" c:identifier="ges_meta_container_set_int64">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given int64 value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="gint64" c:type="gint64"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_marker_list" c:identifier="ges_meta_container_set_marker_list" version="1.18">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given marker list value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="list" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="MarkerList" c:type="const GESMarkerList*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_meta" c:identifier="ges_meta_container_set_meta">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to a
copy of the given value. If the given @value is %NULL, the field
given by @meta_item is removed and %TRUE is returned.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The value to set under @meta_item, or %NULL to
remove the corresponding field</doc>
            <type name="GObject.Value" c:type="const GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_string" c:identifier="ges_meta_container_set_string">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given string value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_uint" c:identifier="ges_meta_container_set_uint">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given uint value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_uint64" c:identifier="ges_meta_container_set_uint64">
        <doc xml:space="preserve">Sets the value of the specified field of the meta container to the
given uint64 value.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @value was set under @meta_item for @container.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="container" transfer-ownership="none">
            <doc xml:space="preserve">A #GESMetaContainer</doc>
            <type name="MetaContainer" c:type="GESMetaContainer*"/>
          </instance-parameter>
          <parameter name="meta_item" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set under @meta_item</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </method>
      <glib:signal name="notify-meta" when="first" no-recurse="1" detailed="1" no-hooks="1">
        <doc xml:space="preserve">This is emitted for a meta container whenever the metadata under one
of its fields changes, is set for the first time, or is removed. In
the latter case, @value will be %NULL.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="key" transfer-ownership="none">
            <doc xml:space="preserve">The key for the @container field that changed</doc>
            <type name="utf8" c:type="gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The new value under @key</doc>
            <type name="GObject.Value"/>
          </parameter>
        </parameters>
      </glib:signal>
    </interface>
    <record name="MetaContainerInterface" c:type="GESMetaContainerInterface" glib:is-gtype-struct-for="MetaContainer">
      <field name="parent_iface">
        <type name="GObject.TypeInterface" c:type="GTypeInterface"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <bitfield name="MetaFlag" glib:type-name="GESMetaFlag" glib:get-type="ges_meta_flag_get_type" c:type="GESMetaFlag">
      <member name="readable" value="1" c:identifier="GES_META_READABLE" glib:nick="readable" glib:name="GES_META_READABLE">
        <doc xml:space="preserve">The metadata is readable</doc>
      </member>
      <member name="writable" value="2" c:identifier="GES_META_WRITABLE" glib:nick="writable" glib:name="GES_META_WRITABLE">
        <doc xml:space="preserve">The metadata is writable</doc>
      </member>
      <member name="readwrite" value="3" c:identifier="GES_META_READ_WRITE" glib:nick="readwrite" glib:name="GES_META_READ_WRITE">
        <doc xml:space="preserve">The metadata is readable and writable</doc>
      </member>
    </bitfield>
    <callback name="MetaForeachFunc" c:type="GESMetaForeachFunc">
      <doc xml:space="preserve">A method to be called on all of a meta container's fields.</doc>
      <return-value transfer-ownership="none">
        <type name="none" c:type="void"/>
      </return-value>
      <parameters>
        <parameter name="container" transfer-ownership="none">
          <doc xml:space="preserve">A #GESMetaContainer</doc>
          <type name="MetaContainer" c:type="const GESMetaContainer*"/>
        </parameter>
        <parameter name="key" transfer-ownership="none">
          <doc xml:space="preserve">The key for one of @container's fields</doc>
          <type name="utf8" c:type="const gchar*"/>
        </parameter>
        <parameter name="value" transfer-ownership="none">
          <doc xml:space="preserve">The set value under @key</doc>
          <type name="GObject.Value" c:type="const GValue*"/>
        </parameter>
        <parameter name="user_data" transfer-ownership="none" nullable="1" allow-none="1" closure="3">
          <doc xml:space="preserve">User data</doc>
          <type name="gpointer" c:type="gpointer"/>
        </parameter>
      </parameters>
    </callback>
    <class name="MultiFileSource" c:symbol-prefix="multi_file_source" c:type="GESMultiFileSource" deprecated="1" deprecated-version="1.18" parent="VideoSource" glib:type-name="GESMultiFileSource" glib:get-type="ges_multi_file_source_get_type" glib:type-struct="MultiFileSourceClass">
      <doc xml:space="preserve">Outputs the video stream from a given image sequence. The start frame chosen
will be determined by the in-point property on the track element.

This should not be used anymore, the `imagesequence://` protocol should be
used instead. Check the #imagesequencesrc GStreamer element for more
information.</doc>
      <doc-deprecated xml:space="preserve">Use #GESUriSource instead</doc-deprecated>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_multi_file_source_new">
        <return-value transfer-ownership="none">
          <type name="MultiFileSource" c:type="GESMultiFileSource*"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none">
            <type name="utf8" c:type="gchar*"/>
          </parameter>
        </parameters>
      </constructor>
      <property name="uri" writable="1" construct-only="1" transfer-ownership="none" default-value="NULL">
        <doc xml:space="preserve">The uri of the file/resource to use. You can set a start index,
a stop index and a sequence pattern.
The format is &lt;multifile://start:stop\@location-pattern&gt;.
The pattern uses printf string formating.

Example uris:

multifile:///home/you/image\%03d.jpg

multifile://20:50@/home/you/sequence/\%04d.png</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <field name="parent" readable="0" private="1">
        <type name="VideoSource" c:type="GESVideoSource"/>
      </field>
      <field name="uri" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="MultiFileSourcePrivate" c:type="GESMultiFileSourcePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="MultiFileSourceClass" c:type="GESMultiFileSourceClass" glib:is-gtype-struct-for="MultiFileSource">
      <field name="parent_class">
        <type name="VideoSourceClass" c:type="GESVideoSourceClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="MultiFileSourcePrivate" c:type="GESMultiFileSourcePrivate" disguised="1" opaque="1"/>
    <class name="Operation" c:symbol-prefix="operation" c:type="GESOperation" parent="TrackElement" abstract="1" glib:type-name="GESOperation" glib:get-type="ges_operation_get_type" glib:type-struct="OperationClass">
      <doc xml:space="preserve">Base class for overlays, transitions, and effects</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <field name="parent" readable="0" private="1">
        <type name="TrackElement" c:type="GESTrackElement"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="OperationPrivate" c:type="GESOperationPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="OperationClass" c:type="GESOperationClass" glib:is-gtype-struct-for="Operation">
      <field name="parent_class" readable="0" private="1">
        <type name="TrackElementClass" c:type="GESTrackElementClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <class name="OperationClip" c:symbol-prefix="operation_clip" c:type="GESOperationClip" parent="Clip" abstract="1" glib:type-name="GESOperationClip" glib:get-type="ges_operation_clip_get_type" glib:type-struct="OperationClipClass">
      <doc xml:space="preserve">Operations are any kind of object that both outputs AND consumes data.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <field name="parent" readable="0" private="1">
        <type name="Clip" c:type="GESClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="OperationClipPrivate" c:type="GESOperationClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="OperationClipClass" c:type="GESOperationClipClass" glib:is-gtype-struct-for="OperationClip">
      <field name="parent_class" readable="0" private="1">
        <type name="ClipClass" c:type="GESClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="OperationClipPrivate" c:type="GESOperationClipPrivate" disguised="1" opaque="1"/>
    <record name="OperationPrivate" c:type="GESOperationPrivate" disguised="1" opaque="1"/>
    <class name="OverlayClip" c:symbol-prefix="overlay_clip" c:type="GESOverlayClip" parent="OperationClip" abstract="1" glib:type-name="GESOverlayClip" glib:get-type="ges_overlay_clip_get_type" glib:type-struct="OverlayClipClass">
      <doc xml:space="preserve">Overlays are objects which modify the underlying layer(s).

Examples of overlays include text, image watermarks, or audio dubbing.

Transitions, which change from one source to another over time, are
not considered overlays.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <field name="parent" readable="0" private="1">
        <type name="OperationClip" c:type="GESOperationClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="OverlayClipPrivate" c:type="GESOverlayClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="OverlayClipClass" c:type="GESOverlayClipClass" glib:is-gtype-struct-for="OverlayClip">
      <field name="parent_class">
        <doc xml:space="preserve">parent class</doc>
        <type name="OperationClipClass" c:type="GESOperationClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="OverlayClipPrivate" c:type="GESOverlayClipPrivate" disguised="1" opaque="1"/>
    <constant name="PADDING" value="4" c:type="GES_PADDING">
      <attribute name="doc.skip" value="true"/>
      <type name="gint" c:type="gint"/>
    </constant>
    <constant name="PADDING_LARGE" value="20" c:type="GES_PADDING_LARGE">
      <attribute name="doc.skip" value="true"/>
      <type name="gint" c:type="gint"/>
    </constant>
    <class name="Pipeline" c:symbol-prefix="pipeline" c:type="GESPipeline" parent="Gst.Pipeline" glib:type-name="GESPipeline" glib:get-type="ges_pipeline_get_type" glib:type-struct="PipelineClass">
      <doc xml:space="preserve">A #GESPipeline can take an audio-video #GESTimeline and conveniently
link its #GESTrack-s to an internal #playsink element, for
preview/playback, and an internal #encodebin element, for rendering.
You can switch between these modes using ges_pipeline_set_mode().

You can choose the specific audio and video sinks used for previewing
the timeline by setting the #GESPipeline:audio-sink and
#GESPipeline:video-sink properties.

You can set the encoding and save location used in rendering by calling
ges_pipeline_set_render_settings().</doc>
      <implements name="Gst.ChildProxy"/>
      <implements name="GstVideo.VideoOverlay"/>
      <constructor name="new" c:identifier="ges_pipeline_new">
        <doc xml:space="preserve">Creates a new pipeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The newly created pipeline.</doc>
          <type name="Pipeline" c:type="GESPipeline*"/>
        </return-value>
      </constructor>
      <method name="get_mode" c:identifier="ges_pipeline_get_mode" glib:get-property="mode">
        <doc xml:space="preserve">Gets the #GESPipeline:mode of the pipeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The current mode of @pipeline.</doc>
          <type name="PipelineFlags" c:type="GESPipelineFlags"/>
        </return-value>
        <parameters>
          <instance-parameter name="pipeline" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_thumbnail" c:identifier="ges_pipeline_get_thumbnail">
        <doc xml:space="preserve">Gets a sample from the pipeline of the currently displayed image in
preview, in the specified format.

Note that if you use "ANY" caps for @caps, then the current format of
the image is used. You can retrieve these caps from the returned sample
with gst_sample_get_caps().</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">A sample of @self's current image preview in
the format given by @caps, or %NULL if an error prevented fetching the
sample.</doc>
          <type name="Gst.Sample" c:type="GstSample*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline in #GST_STATE_PLAYING or #GST_STATE_PAUSED</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
          <parameter name="caps" transfer-ownership="none">
            <doc xml:space="preserve">Some caps to specifying the desired format, or
#GST_CAPS_ANY to use the native format</doc>
            <type name="Gst.Caps" c:type="GstCaps*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_thumbnail_rgb24" c:identifier="ges_pipeline_get_thumbnail_rgb24">
        <doc xml:space="preserve">Gets a sample from the pipeline of the currently displayed image in
preview, in the 24-bit "RGB" format and of the desired width and
height.

See ges_pipeline_get_thumbnail().</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">A sample of @self's current image preview in
the "RGB" format, scaled to @width and @height, or %NULL if an error
prevented fetching the sample.</doc>
          <type name="Gst.Sample" c:type="GstSample*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline in %GST_STATE_PLAYING or %GST_STATE_PAUSED</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
          <parameter name="width" transfer-ownership="none">
            <doc xml:space="preserve">The requested pixel width of the image, or -1 to use the native
size</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
          <parameter name="height" transfer-ownership="none">
            <doc xml:space="preserve">The requested pixel height of the image, or -1 to use the
native size</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
        </parameters>
      </method>
      <method name="preview_get_audio_sink" c:identifier="ges_pipeline_preview_get_audio_sink">
        <doc xml:space="preserve">Gets the #GESPipeline:audio-sink of the pipeline.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The audio sink used by @self for preview.</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="preview_get_video_sink" c:identifier="ges_pipeline_preview_get_video_sink">
        <doc xml:space="preserve">Gets the #GESPipeline:video-sink of the pipeline.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The video sink used by @self for preview.</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="preview_set_audio_sink" c:identifier="ges_pipeline_preview_set_audio_sink">
        <doc xml:space="preserve">Sets the #GESPipeline:audio-sink of the pipeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline in #GST_STATE_NULL</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
          <parameter name="sink" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A audio sink for @self to use for preview</doc>
            <type name="Gst.Element" c:type="GstElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="preview_set_video_sink" c:identifier="ges_pipeline_preview_set_video_sink">
        <doc xml:space="preserve">Sets the #GESPipeline:video-sink of the pipeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline in #GST_STATE_NULL</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
          <parameter name="sink" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A video sink for @self to use for preview</doc>
            <type name="Gst.Element" c:type="GstElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="save_thumbnail" c:identifier="ges_pipeline_save_thumbnail" throws="1">
        <doc xml:space="preserve">Saves the currently displayed image of the pipeline in preview to the
given location, in the specified dimensions and format.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @self's current image preview was successfully saved
to @location using the given @format, @height and @width.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline in %GST_STATE_PLAYING or %GST_STATE_PAUSED</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
          <parameter name="width" transfer-ownership="none">
            <doc xml:space="preserve">The requested pixel width of the image, or -1 to use the native
size</doc>
            <type name="gint" c:type="int"/>
          </parameter>
          <parameter name="height" transfer-ownership="none">
            <doc xml:space="preserve">The requested pixel height of the image, or -1 to use the
native size</doc>
            <type name="gint" c:type="int"/>
          </parameter>
          <parameter name="format" transfer-ownership="none">
            <doc xml:space="preserve">The desired mime type (for example, "image/jpeg")</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="location" transfer-ownership="none">
            <doc xml:space="preserve">The path to save the thumbnail to</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_mode" c:identifier="ges_pipeline_set_mode" glib:set-property="mode">
        <doc xml:space="preserve">Sets the #GESPipeline:mode of the pipeline.

Note that the pipeline will be set to #GST_STATE_NULL during this call to
perform the necessary changes. You will need to set the state again yourself
after calling this.

&gt; **NOTE**: [Rendering settings](ges_pipeline_set_render_settings) need to be
&gt; set before setting @mode to #GES_PIPELINE_MODE_RENDER or
&gt; #GES_PIPELINE_MODE_SMART_RENDER, the call to this method will fail
&gt; otherwise.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the mode of @pipeline was successfully set to @mode.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="pipeline" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
          <parameter name="mode" transfer-ownership="none">
            <doc xml:space="preserve">The mode to set for @pipeline</doc>
            <type name="PipelineFlags" c:type="GESPipelineFlags"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_render_settings" c:identifier="ges_pipeline_set_render_settings">
        <doc xml:space="preserve">Specifies encoding setting to be used by the pipeline to render its
#GESPipeline:timeline, and where the result should be written to.

This method **must** be called before setting the pipeline mode to
#GES_PIPELINE_MODE_RENDER.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the settings were successfully set on @pipeline.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="pipeline" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
          <parameter name="output_uri" transfer-ownership="none">
            <doc xml:space="preserve">The URI to save the #GESPipeline:timeline rendering
result to</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="profile" transfer-ownership="none">
            <doc xml:space="preserve">The encoding to use for rendering the #GESPipeline:timeline</doc>
            <type name="GstPbutils.EncodingProfile" c:type="GstEncodingProfile*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_timeline" c:identifier="ges_pipeline_set_timeline" glib:set-property="timeline">
        <doc xml:space="preserve">Takes the given timeline and sets it as the #GESPipeline:timeline for
the pipeline.

Note that you should only call this method once on a given pipeline
because a pipeline can not have its #GESPipeline:timeline changed after
it has been set.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @timeline was successfully given to @pipeline.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="pipeline" transfer-ownership="none">
            <doc xml:space="preserve">A #GESPipeline</doc>
            <type name="Pipeline" c:type="GESPipeline*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The timeline to set for @pipeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
        </parameters>
      </method>
      <property name="audio-filter" version="1.6.0" writable="1" transfer-ownership="none">
        <doc xml:space="preserve">The audio filter(s) to apply during playback in preview mode,
immediately before the #GESPipeline:audio-sink. This exposes the
#playsink:audio-filter property of the internal #playsink.</doc>
        <type name="Gst.Element"/>
      </property>
      <property name="audio-sink" writable="1" transfer-ownership="none">
        <doc xml:space="preserve">The audio sink used for preview. This exposes the
#playsink:audio-sink property of the internal #playsink.</doc>
        <type name="Gst.Element"/>
      </property>
      <property name="mode" writable="1" transfer-ownership="none" setter="set_mode" getter="get_mode" default-value="GES_PIPELINE_MODE_PREVIEW_AUDIO | GES_PIPELINE_MODE_PREVIEW_VIDEO">
        <doc xml:space="preserve">The pipeline's mode. In preview mode (for audio or video, or both)
the pipeline can display the timeline's content to an end user. In
rendering mode the pipeline can encode the timeline's content and
save it to a file.</doc>
        <type name="PipelineFlags"/>
      </property>
      <property name="timeline" writable="1" transfer-ownership="none" setter="set_timeline">
        <doc xml:space="preserve">The timeline used by this pipeline, whose content it will play and
render, or %NULL if the pipeline does not yet have a timeline.

Note that after you set the timeline for the first time, subsequent
calls to change the timeline will fail.</doc>
        <type name="Timeline"/>
      </property>
      <property name="video-filter" version="1.6.0" writable="1" transfer-ownership="none">
        <doc xml:space="preserve">The video filter(s) to apply during playback in preview mode,
immediately before the #GESPipeline:video-sink. This exposes the
#playsink:video-filter property of the internal #playsink.</doc>
        <type name="Gst.Element"/>
      </property>
      <property name="video-sink" writable="1" transfer-ownership="none">
        <doc xml:space="preserve">The video sink used for preview. This exposes the
#playsink:video-sink property of the internal #playsink.</doc>
        <type name="Gst.Element"/>
      </property>
      <field name="parent" readable="0" private="1">
        <type name="Gst.Pipeline" c:type="GstPipeline"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="PipelinePrivate" c:type="GESPipelinePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="PipelineClass" c:type="GESPipelineClass" glib:is-gtype-struct-for="Pipeline">
      <field name="parent_class" readable="0" private="1">
        <doc xml:space="preserve">parent class</doc>
        <type name="Gst.PipelineClass" c:type="GstPipelineClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <bitfield name="PipelineFlags" glib:type-name="GESPipelineFlags" glib:get-type="ges_pipeline_flags_get_type" c:type="GESPipelineFlags">
      <doc xml:space="preserve">The various modes a #GESPipeline can be configured to.</doc>
      <member name="audio_preview" value="1" c:identifier="GES_PIPELINE_MODE_PREVIEW_AUDIO" glib:nick="audio_preview" glib:name="GES_PIPELINE_MODE_PREVIEW_AUDIO">
        <doc xml:space="preserve">Output the #GESPipeline:timeline's
audio to the soundcard</doc>
      </member>
      <member name="video_preview" value="2" c:identifier="GES_PIPELINE_MODE_PREVIEW_VIDEO" glib:nick="video_preview" glib:name="GES_PIPELINE_MODE_PREVIEW_VIDEO">
        <doc xml:space="preserve">Output the #GESPipeline:timeline's
video to the screen</doc>
      </member>
      <member name="full_preview" value="3" c:identifier="GES_PIPELINE_MODE_PREVIEW" glib:nick="full_preview" glib:name="GES_PIPELINE_MODE_PREVIEW">
        <doc xml:space="preserve">Output both the #GESPipeline:timeline's
audio and video to the soundcard and screen (default)</doc>
      </member>
      <member name="render" value="4" c:identifier="GES_PIPELINE_MODE_RENDER" glib:nick="render" glib:name="GES_PIPELINE_MODE_RENDER">
        <doc xml:space="preserve">Render the #GESPipeline:timeline with
forced decoding (the underlying #encodebin has its
#encodebin:avoid-reencoding property set to %FALSE)</doc>
      </member>
      <member name="smart_render" value="8" c:identifier="GES_PIPELINE_MODE_SMART_RENDER" glib:nick="smart_render" glib:name="GES_PIPELINE_MODE_SMART_RENDER">
        <doc xml:space="preserve">Render the #GESPipeline:timeline,
avoiding decoding/reencoding (the underlying #encodebin has its
#encodebin:avoid-reencoding property set to %TRUE).
&gt; NOTE: Smart rendering can not work in tracks where #GESTrack:mixing
&gt; is enabled.</doc>
      </member>
    </bitfield>
    <record name="PipelinePrivate" c:type="GESPipelinePrivate" disguised="1" opaque="1"/>
    <class name="PitiviFormatter" c:symbol-prefix="pitivi_formatter" c:type="GESPitiviFormatter" deprecated="1" deprecated-version="1.0" parent="Formatter" glib:type-name="GESPitiviFormatter" glib:get-type="ges_pitivi_formatter_get_type" glib:type-struct="PitiviFormatterClass">
      <attribute name="doc.skip" value="true"/>
      <doc xml:space="preserve">This is a legacy format and you should avoid to use it. The formatter
is really not in good shape and is deprecated.</doc>
      <implements name="Extractable"/>
      <constructor name="new" c:identifier="ges_pitivi_formatter_new">
        <return-value transfer-ownership="none">
          <type name="PitiviFormatter" c:type="GESPitiviFormatter*"/>
        </return-value>
      </constructor>
      <field name="parent">
        <type name="Formatter" c:type="GESFormatter"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="PitiviFormatterPrivate" c:type="GESPitiviFormatterPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="PitiviFormatterClass" c:type="GESPitiviFormatterClass" glib:is-gtype-struct-for="PitiviFormatter">
      <attribute name="doc.skip" value="true"/>
      <field name="parent_class" readable="0" private="1">
        <type name="FormatterClass" c:type="GESFormatterClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="PitiviFormatterPrivate" c:type="GESPitiviFormatterPrivate" disguised="1" opaque="1"/>
    <class name="Project" c:symbol-prefix="project" c:type="GESProject" parent="Asset" glib:type-name="GESProject" glib:get-type="ges_project_get_type" glib:type-struct="ProjectClass">
      <doc xml:space="preserve">The #GESProject is used to control a set of #GESAsset and is a
#GESAsset with `GES_TYPE_TIMELINE` as @extractable_type itself. That
means that you can extract #GESTimeline from a project as followed:

```c
GESProject *project;
GESTimeline *timeline;

project = ges_project_new ("file:///path/to/a/valid/project/uri");

// Here you can connect to the various signal to get more infos about
// what is happening and recover from errors if possible
...

timeline = ges_asset_extract (GES_ASSET (project));
```

The #GESProject class offers a higher level API to handle #GESAsset-s.
It lets you request new asset, and it informs you about new assets through
a set of signals. Also it handles problem such as missing files/missing
#GstElement and lets you try to recover from those.

## Subprojects

In order to add a subproject, the only thing to do is to add the subproject
to the main project:

``` c
ges_project_add_asset (project, GES_ASSET (subproject));
```
then the subproject will be serialized in the project files. To use
the subproject in a timeline, you should use a #GESUriClip with the
same subproject URI.

When loading a project with subproject, subprojects URIs will be temporary
writable local files. If you want to edit the subproject timeline,
you should retrieve the subproject from the parent project asset list and
extract the timeline with ges_asset_extract() and save it at
the same temporary location.</doc>
      <implements name="MetaContainer"/>
      <implements name="Gio.AsyncInitable"/>
      <implements name="Gio.Initable"/>
      <constructor name="new" c:identifier="ges_project_new">
        <doc xml:space="preserve">Creates a new #GESProject and sets its uri to @uri if provided. Note that
if @uri is not valid or %NULL, the uri of the project will then be set
the first time you save the project. If you then save the project to
other locations, it will never be updated again and the first valid URI is
the URI it will keep refering to.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A newly created #GESProject

MT safe.</doc>
          <type name="Project" c:type="GESProject*"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The uri to be set after creating the project.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </constructor>
      <virtual-method name="asset_added">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="asset_loading">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="asset_removed">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="loaded">
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="loading" version="1.18">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The self</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The loading timeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="loading_error">
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="error" transfer-ownership="none">
            <type name="GLib.Error" c:type="GError*"/>
          </parameter>
          <parameter name="id" transfer-ownership="none">
            <type name="utf8" c:type="gchar*"/>
          </parameter>
          <parameter name="extractable_type" transfer-ownership="none">
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="missing_uri">
        <return-value transfer-ownership="full">
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="error" transfer-ownership="none">
            <type name="GLib.Error" c:type="GError*"/>
          </parameter>
          <parameter name="wrong_asset" transfer-ownership="none">
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="add_asset" c:identifier="ges_project_add_asset">
        <doc xml:space="preserve">Adds a #GESAsset to @project, the project will keep a reference on
@asset.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the asset could be added %FALSE it was already
in the project.

MT safe.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset to add to @project</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_encoding_profile" c:identifier="ges_project_add_encoding_profile">
        <doc xml:space="preserve">Adds @profile to the project. It lets you save in what format
the project will be rendered and keep a reference to those formats.
Also, those formats will be saved to the project file when possible.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @profile could be added, %FALSE otherwise

MT safe.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="profile" transfer-ownership="none">
            <doc xml:space="preserve">A #GstEncodingProfile to add to the project. If a profile with
the same name already exists, it will be replaced.</doc>
            <type name="GstPbutils.EncodingProfile" c:type="GstEncodingProfile*"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_formatter" c:identifier="ges_project_add_formatter" version="1.18">
        <doc xml:space="preserve">Adds a formatter to be used to load @project</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">The project to add a formatter to</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="formatter" transfer-ownership="none">
            <doc xml:space="preserve">A formatter used by @project</doc>
            <type name="Formatter" c:type="GESFormatter*"/>
          </parameter>
        </parameters>
      </method>
      <method name="create_asset" c:identifier="ges_project_create_asset">
        <doc xml:space="preserve">Create and add a #GESAsset to @project. You should connect to the
"asset-added" signal to get the asset when it finally gets added to
@project</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the asset was added and started loading, %FALSE it was
already in the project.

MT safe.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="id" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The id of the asset to create and add to @project</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="extractable_type" transfer-ownership="none">
            <doc xml:space="preserve">The #GType of the asset to create</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </method>
      <method name="create_asset_sync" c:identifier="ges_project_create_asset_sync" throws="1">
        <doc xml:space="preserve">Create and add a #GESAsset to @project. You should connect to the
"asset-added" signal to get the asset when it finally gets added to
@project</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The newly created #GESAsset or %NULL.

MT safe.</doc>
          <type name="Asset" c:type="GESAsset*"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="id" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The id of the asset to create and add to @project</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="extractable_type" transfer-ownership="none">
            <doc xml:space="preserve">The #GType of the asset to create</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_asset" c:identifier="ges_project_get_asset">
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The #GESAsset with
@id or %NULL if no asset with @id as an ID

MT safe.</doc>
          <type name="Asset" c:type="GESAsset*"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="id" transfer-ownership="none">
            <doc xml:space="preserve">The id of the asset to retrieve</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="extractable_type" transfer-ownership="none">
            <doc xml:space="preserve">The extractable_type of the asset
to retrieve from @object</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_loading_assets" c:identifier="ges_project_get_loading_assets">
        <doc xml:space="preserve">Get the assets that are being loaded</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A set of loading asset
that will be added to @project. Note that those Asset are *not* loaded yet,
and thus can not be used.

MT safe.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Asset"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_uri" c:identifier="ges_project_get_uri" glib:get-property="uri">
        <doc xml:space="preserve">Retrieve the uri that is currently set on @project</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">a newly allocated string representing uri.

MT safe.</doc>
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="list_assets" c:identifier="ges_project_list_assets">
        <doc xml:space="preserve">List all @asset contained in @project filtering per extractable_type
as defined by @filter. It copies the asset and thus will not be updated
in time.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The list of
#GESAsset the object contains

MT safe.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Asset"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="filter" transfer-ownership="none">
            <doc xml:space="preserve">Type of assets to list, `GES_TYPE_EXTRACTABLE` will list
all assets</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </method>
      <method name="list_encoding_profiles" c:identifier="ges_project_list_encoding_profiles">
        <doc xml:space="preserve">Lists the encoding profile that have been set to @project. The first one
is the latest added.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The
list of #GstEncodingProfile used in @project</doc>
          <type name="GLib.List" c:type="const GList*">
            <type name="GstPbutils.EncodingProfile"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="load" c:identifier="ges_project_load" throws="1">
        <doc xml:space="preserve">Loads @project into @timeline</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the project could be loaded %FALSE otherwise.

MT safe.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject that has an @uri set already</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">A blank timeline to load @project into</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove_asset" c:identifier="ges_project_remove_asset">
        <doc xml:space="preserve">Remove @asset from @project.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the asset could be removed %FALSE otherwise

MT safe.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset to remove from @project</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
        </parameters>
      </method>
      <method name="save" c:identifier="ges_project_save" throws="1">
        <doc xml:space="preserve">Save the timeline of @project to @uri. You should make sure that @timeline
is one of the timelines that have been extracted from @project
(using ges_asset_extract (@project);)</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the project could be save, %FALSE otherwise

MT safe.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="project" transfer-ownership="none">
            <doc xml:space="preserve">A #GESProject to save</doc>
            <type name="Project" c:type="GESProject*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline to save, it must have been extracted from @project</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">The uri where to save @project and @timeline</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="formatter_asset" transfer-ownership="full" nullable="1" allow-none="1">
            <doc xml:space="preserve">The formatter asset to
use or %NULL. If %NULL, will try to save in the same format as the one
from which the timeline as been loaded or default to the best formatter
as defined in #ges_find_formatter_for_uri</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
          <parameter name="overwrite" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE to overwrite file if it exists</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <property name="uri" writable="1" construct-only="1" transfer-ownership="none" getter="get_uri" default-value="NULL">
        <type name="utf8" c:type="gchar*"/>
      </property>
      <field name="parent">
        <type name="Asset" c:type="GESAsset"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="ProjectPrivate" c:type="GESProjectPrivate*"/>
      </field>
      <field name="__ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="20">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <glib:signal name="asset-added" when="last">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset that has been added to @project</doc>
            <type name="Asset"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="asset-loading" when="last" version="1.8">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset that started loading</doc>
            <type name="Asset"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="asset-removed" when="last">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAsset that has been removed from @project</doc>
            <type name="Asset"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="error-loading" when="last" version="1.18">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The timeline that failed loading</doc>
            <type name="Timeline"/>
          </parameter>
          <parameter name="error" transfer-ownership="none">
            <doc xml:space="preserve">The #GError defining the error that occured</doc>
            <type name="GLib.Error"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="error-loading-asset" when="last">
        <doc xml:space="preserve">Informs you that a #GESAsset could not be created. In case of
missing GStreamer plugins, the error will be set to #GST_CORE_ERROR
#GST_CORE_ERROR_MISSING_PLUGIN</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="error" transfer-ownership="none">
            <doc xml:space="preserve">The #GError defining the error that occured, might be %NULL</doc>
            <type name="GLib.Error"/>
          </parameter>
          <parameter name="id" transfer-ownership="none">
            <doc xml:space="preserve">The @id of the asset that failed loading</doc>
            <type name="utf8" c:type="gchar*"/>
          </parameter>
          <parameter name="extractable_type" transfer-ownership="none">
            <doc xml:space="preserve">The @extractable_type of the asset that
failed loading</doc>
            <type name="GType" c:type="GType"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="loaded" when="first">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline that completed loading</doc>
            <type name="Timeline"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="loading" when="first" version="1.18">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline that started loading</doc>
            <type name="Timeline"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="missing-uri" when="last">
        <doc xml:space="preserve">```c
static gchar
source_moved_cb (GESProject *project, GError *error, GESAsset *asset_with_error)
{
  return g_strdup ("file:///the/new/uri.ogg");
}

static int
main (int argc, gchar ** argv)
{
  GESTimeline *timeline;
  GESProject *project = ges_project_new ("file:///some/uri.xges");

  g_signal_connect (project, "missing-uri", source_moved_cb, NULL);
  timeline = ges_asset_extract (GES_ASSET (project));
}
```</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The new URI of @wrong_asset</doc>
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <parameter name="error" transfer-ownership="none">
            <doc xml:space="preserve">The error that happened</doc>
            <type name="GLib.Error"/>
          </parameter>
          <parameter name="wrong_asset" transfer-ownership="none">
            <doc xml:space="preserve">The asset with the wrong ID, you should us it and its content
only to find out what the new location is.</doc>
            <type name="Asset"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <record name="ProjectClass" c:type="GESProjectClass" glib:is-gtype-struct-for="Project">
      <field name="parent_class">
        <type name="AssetClass" c:type="GESAssetClass"/>
      </field>
      <field name="asset_added">
        <callback name="asset_added">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Project" c:type="GESProject*"/>
            </parameter>
            <parameter name="asset" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="asset_loading">
        <callback name="asset_loading">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Project" c:type="GESProject*"/>
            </parameter>
            <parameter name="asset" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="asset_removed">
        <callback name="asset_removed">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Project" c:type="GESProject*"/>
            </parameter>
            <parameter name="asset" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="missing_uri">
        <callback name="missing_uri">
          <return-value transfer-ownership="full">
            <type name="utf8" c:type="gchar*"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Project" c:type="GESProject*"/>
            </parameter>
            <parameter name="error" transfer-ownership="none">
              <type name="GLib.Error" c:type="GError*"/>
            </parameter>
            <parameter name="wrong_asset" transfer-ownership="none">
              <type name="Asset" c:type="GESAsset*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="loading_error">
        <callback name="loading_error">
          <return-value transfer-ownership="none">
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Project" c:type="GESProject*"/>
            </parameter>
            <parameter name="error" transfer-ownership="none">
              <type name="GLib.Error" c:type="GError*"/>
            </parameter>
            <parameter name="id" transfer-ownership="none">
              <type name="utf8" c:type="gchar*"/>
            </parameter>
            <parameter name="extractable_type" transfer-ownership="none">
              <type name="GType" c:type="GType"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="loaded">
        <callback name="loaded">
          <return-value transfer-ownership="none">
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="Project" c:type="GESProject*"/>
            </parameter>
            <parameter name="timeline" transfer-ownership="none">
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="loading">
        <callback name="loading">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The self</doc>
              <type name="Project" c:type="GESProject*"/>
            </parameter>
            <parameter name="timeline" transfer-ownership="none">
              <doc xml:space="preserve">The loading timeline</doc>
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="3">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="ProjectPrivate" c:type="GESProjectPrivate" disguised="1" opaque="1"/>
    <class name="Source" c:symbol-prefix="source" c:type="GESSource" parent="TrackElement" glib:type-name="GESSource" glib:get-type="ges_source_get_type" glib:type-struct="SourceClass">
      <doc xml:space="preserve">Base class for single-media sources</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <virtual-method name="create_source" version="1.20">
        <doc xml:space="preserve">Creates the GstElement to put in the source topbin. Other elements will be
queued, like a volume. In the case of a AudioUriSource, for example, the
subclass will return a decodebin, and we will append a volume.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The source element to use.</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">The #GESAudioSource</doc>
            <type name="Source" c:type="GESSource*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="select_pad" version="1.20">
        <doc xml:space="preserve">Check whether @pad should be exposed/used.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @pad should be used %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">The @source for which to check if @pad should be used or not</doc>
            <type name="Source" c:type="GESSource*"/>
          </instance-parameter>
          <parameter name="pad" transfer-ownership="none">
            <doc xml:space="preserve">The pad to check</doc>
            <type name="Gst.Pad" c:type="GstPad*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <field name="parent" readable="0" private="1">
        <type name="TrackElement" c:type="GESTrackElement"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="SourcePrivate" c:type="GESSourcePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="SourceClass" c:type="GESSourceClass" glib:is-gtype-struct-for="Source">
      <field name="parent_class" readable="0" private="1">
        <type name="TrackElementClass" c:type="GESTrackElementClass"/>
      </field>
      <field name="select_pad">
        <callback name="select_pad">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @pad should be used %FALSE otherwise.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="source" transfer-ownership="none">
              <doc xml:space="preserve">The @source for which to check if @pad should be used or not</doc>
              <type name="Source" c:type="GESSource*"/>
            </parameter>
            <parameter name="pad" transfer-ownership="none">
              <doc xml:space="preserve">The pad to check</doc>
              <type name="Gst.Pad" c:type="GstPad*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="create_source">
        <callback name="create_source">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">The source element to use.</doc>
            <type name="Gst.Element" c:type="GstElement*"/>
          </return-value>
          <parameters>
            <parameter name="source" transfer-ownership="none">
              <doc xml:space="preserve">The #GESAudioSource</doc>
              <type name="Source" c:type="GESSource*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="2">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <class name="SourceClip" c:symbol-prefix="source_clip" c:type="GESSourceClip" parent="Clip" glib:type-name="GESSourceClip" glib:get-type="ges_source_clip_get_type" glib:type-struct="SourceClipClass">
      <doc xml:space="preserve">#GESSourceClip-s are clips whose core elements are #GESSource-s.

## Effects

#GESSourceClip-s can also have #GESBaseEffect-s added as non-core
elements. These effects are applied to the core sources of the clip
that they share a #GESTrack with. See #GESClip for how to add and move
these effects from the clip.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new_time_overlay" c:identifier="ges_source_clip_new_time_overlay" version="1.18">
        <doc xml:space="preserve">Creates a new #GESSourceClip that renders a time overlay on top</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created #GESSourceClip,
or %NULL if there was an error.</doc>
          <type name="SourceClip" c:type="GESSourceClip*"/>
        </return-value>
      </constructor>
      <field name="parent">
        <type name="Clip" c:type="GESClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="SourceClipPrivate" c:type="GESSourceClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <class name="SourceClipAsset" c:symbol-prefix="source_clip_asset" c:type="GESSourceClipAsset" version="1.18" parent="ClipAsset" glib:type-name="GESSourceClipAsset" glib:get-type="ges_source_clip_asset_get_type" glib:type-struct="SourceClipAssetClass">
      <doc xml:space="preserve">An asset types from which #GESSourceClip will be extracted</doc>
      <implements name="MetaContainer"/>
      <implements name="Gio.AsyncInitable"/>
      <implements name="Gio.Initable"/>
      <field name="parent_instance">
        <type name="ClipAsset" c:type="GESClipAsset"/>
      </field>
    </class>
    <record name="SourceClipAssetClass" c:type="GESSourceClipAssetClass" glib:is-gtype-struct-for="SourceClipAsset">
      <field name="parent_class">
        <type name="ClipAssetClass" c:type="GESClipAssetClass"/>
      </field>
    </record>
    <record name="SourceClipClass" c:type="GESSourceClipClass" glib:is-gtype-struct-for="SourceClip">
      <field name="parent_class" readable="0" private="1">
        <type name="ClipClass" c:type="GESClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="SourceClipPrivate" c:type="GESSourceClipPrivate" disguised="1" opaque="1"/>
    <record name="SourcePrivate" c:type="GESSourcePrivate" disguised="1" opaque="1"/>
    <function-macro name="TIMELINE_ELEMENT_DURATION" c:identifier="GES_TIMELINE_ELEMENT_DURATION" introspectable="0">
      <doc xml:space="preserve">The #GESTimelineElement:duration of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_ELEMENT_END" c:identifier="GES_TIMELINE_ELEMENT_END" introspectable="0">
      <doc xml:space="preserve">The end position of @obj: #GESTimelineElement:start +
#GESTimelineElement:duration.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_ELEMENT_INPOINT" c:identifier="GES_TIMELINE_ELEMENT_INPOINT" introspectable="0">
      <doc xml:space="preserve">The #GESTimelineElement:in-point of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_ELEMENT_LAYER_PRIORITY" c:identifier="GES_TIMELINE_ELEMENT_LAYER_PRIORITY" introspectable="0">
      <doc xml:space="preserve">See #ges_timeline_element_get_layer_priority.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">The object to retrieve the layer priority from</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_ELEMENT_MAX_DURATION" c:identifier="GES_TIMELINE_ELEMENT_MAX_DURATION" introspectable="0">
      <doc xml:space="preserve">The #GESTimelineElement:max-duration of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_ELEMENT_NAME" c:identifier="GES_TIMELINE_ELEMENT_NAME" introspectable="0">
      <doc xml:space="preserve">The #GESTimelineElement:name of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <constant name="TIMELINE_ELEMENT_NO_LAYER_PRIORITY" value="4294967295" c:type="GES_TIMELINE_ELEMENT_NO_LAYER_PRIORITY">
      <doc xml:space="preserve">Layer priority when a timeline element is not in any layer.</doc>
      <type name="guint32" c:type="guint32"/>
    </constant>
    <function-macro name="TIMELINE_ELEMENT_PARENT" c:identifier="GES_TIMELINE_ELEMENT_PARENT" introspectable="0">
      <doc xml:space="preserve">The #GESTimelineElement:parent of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_ELEMENT_PRIORITY" c:identifier="GES_TIMELINE_ELEMENT_PRIORITY" introspectable="0">
      <doc xml:space="preserve">The #GESTimelineElement:priority of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_ELEMENT_START" c:identifier="GES_TIMELINE_ELEMENT_START" introspectable="0">
      <doc xml:space="preserve">The #GESTimelineElement:start of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_ELEMENT_TIMELINE" c:identifier="GES_TIMELINE_ELEMENT_TIMELINE" introspectable="0">
      <doc xml:space="preserve">The #GESTimelineElement:timeline of @obj.</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">A #GESTimelineElement</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_GET_LAYERS" c:identifier="GES_TIMELINE_GET_LAYERS" introspectable="0">
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TIMELINE_GET_TRACKS" c:identifier="GES_TIMELINE_GET_TRACKS" introspectable="0">
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="TRACK_ELEMENT_CLASS_DEFAULT_HAS_INTERNAL_SOURCE" c:identifier="GES_TRACK_ELEMENT_CLASS_DEFAULT_HAS_INTERNAL_SOURCE" introspectable="0">
      <doc xml:space="preserve">What the default #GESTrackElement:has-internal-source value should be
for new elements from this class.</doc>
      <parameters>
        <parameter name="klass">
          <doc xml:space="preserve">A #GESTrackElementClass</doc>
        </parameter>
      </parameters>
    </function-macro>
    <class name="TestClip" c:symbol-prefix="test_clip" c:type="GESTestClip" parent="SourceClip" glib:type-name="GESTestClip" glib:get-type="ges_test_clip_get_type" glib:type-struct="TestClipClass">
      <doc xml:space="preserve">Useful for testing purposes.

## Asset

The default asset ID is GESTestClip, but the framerate and video
size can be overridden using an ID of the form:

```
framerate=60/1, width=1920, height=1080, max-duration=5.0
```
Note: `max-duration` can be provided in seconds as float, or as GstClockTime
as guint64 or gint.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_test_clip_new">
        <doc xml:space="preserve">Creates a new #GESTestClip.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created #GESTestClip,
or %NULL if there was an error.</doc>
          <type name="TestClip" c:type="GESTestClip*"/>
        </return-value>
      </constructor>
      <constructor name="new_for_nick" c:identifier="ges_test_clip_new_for_nick">
        <doc xml:space="preserve">Creates a new #GESTestClip for the provided @nick.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created #GESTestClip,
or %NULL if there was an error.</doc>
          <type name="TestClip" c:type="GESTestClip*"/>
        </return-value>
        <parameters>
          <parameter name="nick" transfer-ownership="none">
            <doc xml:space="preserve">the nickname for which to create the #GESTestClip</doc>
            <type name="utf8" c:type="gchar*"/>
          </parameter>
        </parameters>
      </constructor>
      <method name="get_frequency" c:identifier="ges_test_clip_get_frequency">
        <doc xml:space="preserve">Get the frequency @self generates.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The frequency @self generates. See audiotestsrc element.</doc>
          <type name="gdouble" c:type="gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTestClip</doc>
            <type name="TestClip" c:type="GESTestClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_volume" c:identifier="ges_test_clip_get_volume" glib:get-property="volume">
        <doc xml:space="preserve">Get the volume of the test audio signal applied on @self.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The volume of the test audio signal applied on @self.</doc>
          <type name="gdouble" c:type="gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTestClip</doc>
            <type name="TestClip" c:type="GESTestClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_vpattern" c:identifier="ges_test_clip_get_vpattern" glib:get-property="vpattern">
        <doc xml:space="preserve">Get the #GESVideoTestPattern which is applied on @self.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The #GESVideoTestPattern which is applied on @self.</doc>
          <type name="VideoTestPattern" c:type="GESVideoTestPattern"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTestClip</doc>
            <type name="TestClip" c:type="GESTestClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_muted" c:identifier="ges_test_clip_is_muted">
        <doc xml:space="preserve">Let you know if the audio track of @self is muted or not.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">Whether the audio track of @self is muted or not.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTestClip</doc>
            <type name="TestClip" c:type="GESTestClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_frequency" c:identifier="ges_test_clip_set_frequency">
        <doc xml:space="preserve">Sets the frequency to generate. See audiotestsrc element.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTestClip to set the frequency on</doc>
            <type name="TestClip" c:type="GESTestClip*"/>
          </instance-parameter>
          <parameter name="freq" transfer-ownership="none">
            <doc xml:space="preserve">the frequency you want to use on @self</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_mute" c:identifier="ges_test_clip_set_mute" glib:set-property="mute">
        <doc xml:space="preserve">Sets whether the audio track of this clip is muted or not.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTestClip on which to mute or unmute the audio track</doc>
            <type name="TestClip" c:type="GESTestClip*"/>
          </instance-parameter>
          <parameter name="mute" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE to mute the audio track, %FALSE to unmute it</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_volume" c:identifier="ges_test_clip_set_volume" glib:set-property="volume">
        <doc xml:space="preserve">Sets the volume of the test audio signal.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTestClip to set the volume on</doc>
            <type name="TestClip" c:type="GESTestClip*"/>
          </instance-parameter>
          <parameter name="volume" transfer-ownership="none">
            <doc xml:space="preserve">the volume of the audio signal you want to use on @self</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_vpattern" c:identifier="ges_test_clip_set_vpattern" glib:set-property="vpattern">
        <doc xml:space="preserve">Sets which video pattern to display on @self.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTestClip to set the pattern on</doc>
            <type name="TestClip" c:type="GESTestClip*"/>
          </instance-parameter>
          <parameter name="vpattern" transfer-ownership="none">
            <doc xml:space="preserve">the #GESVideoTestPattern to use on @self</doc>
            <type name="VideoTestPattern" c:type="GESVideoTestPattern"/>
          </parameter>
        </parameters>
      </method>
      <property name="freq" writable="1" construct="1" transfer-ownership="none" default-value="440.000000">
        <doc xml:space="preserve">The frequency to generate for audio track elements.</doc>
        <type name="gdouble" c:type="gdouble"/>
      </property>
      <property name="mute" writable="1" construct="1" transfer-ownership="none" setter="set_mute" default-value="FALSE">
        <doc xml:space="preserve">Whether the sound will be played or not.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="volume" writable="1" construct="1" transfer-ownership="none" setter="set_volume" getter="get_volume" default-value="1.000000">
        <doc xml:space="preserve">The volume for the audio track elements.</doc>
        <type name="gdouble" c:type="gdouble"/>
      </property>
      <property name="vpattern" writable="1" construct="1" transfer-ownership="none" setter="set_vpattern" getter="get_vpattern" default-value="GES_VIDEO_TEST_PATTERN_SMPTE">
        <doc xml:space="preserve">Video pattern to display in video track elements.</doc>
        <type name="VideoTestPattern"/>
      </property>
      <field name="parent">
        <type name="SourceClip" c:type="GESSourceClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TestClipPrivate" c:type="GESTestClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="TestClipClass" c:type="GESTestClipClass" glib:is-gtype-struct-for="TestClip">
      <field name="parent_class" readable="0" private="1">
        <type name="SourceClipClass" c:type="GESSourceClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="TestClipPrivate" c:type="GESTestClipPrivate" disguised="1" opaque="1"/>
    <enumeration name="TextHAlign" glib:type-name="GESTextHAlign" glib:get-type="ges_text_halign_get_type" c:type="GESTextHAlign">
      <doc xml:space="preserve">Horizontal alignment of the text.</doc>
      <member name="left" value="0" c:identifier="GES_TEXT_HALIGN_LEFT" glib:nick="left" glib:name="GES_TEXT_HALIGN_LEFT">
        <doc xml:space="preserve">align text left</doc>
      </member>
      <member name="center" value="1" c:identifier="GES_TEXT_HALIGN_CENTER" glib:nick="center" glib:name="GES_TEXT_HALIGN_CENTER">
        <doc xml:space="preserve">align text center</doc>
      </member>
      <member name="right" value="2" c:identifier="GES_TEXT_HALIGN_RIGHT" glib:nick="right" glib:name="GES_TEXT_HALIGN_RIGHT">
        <doc xml:space="preserve">align text right</doc>
      </member>
      <member name="position" value="4" c:identifier="GES_TEXT_HALIGN_POSITION" glib:nick="position" glib:name="GES_TEXT_HALIGN_POSITION">
        <doc xml:space="preserve">align text on xpos position</doc>
      </member>
      <member name="absolute" value="5" c:identifier="GES_TEXT_HALIGN_ABSOLUTE" glib:nick="absolute" glib:name="GES_TEXT_HALIGN_ABSOLUTE">
      </member>
    </enumeration>
    <class name="TextOverlay" c:symbol-prefix="text_overlay" c:type="GESTextOverlay" parent="Operation" glib:type-name="GESTextOverlay" glib:get-type="ges_text_overlay_get_type" glib:type-struct="TextOverlayClass">
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_text_overlay_new" deprecated="1" deprecated-version="1.18">
        <doc xml:space="preserve">Creates a new #GESTextOverlay.</doc>
        <doc-deprecated xml:space="preserve">This should never be called by applications as this will
be created by clips.</doc-deprecated>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created #GESTextOverlay or
%NULL if something went wrong.</doc>
          <type name="TextOverlay" c:type="GESTextOverlay*"/>
        </return-value>
      </constructor>
      <method name="get_color" c:identifier="ges_text_overlay_get_color">
        <doc xml:space="preserve">Get the color used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The color used by @source.</doc>
          <type name="guint32" c:type="const guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a GESTextOverlay</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_font_desc" c:identifier="ges_text_overlay_get_font_desc">
        <doc xml:space="preserve">Get the pango font description currently set on @source.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The pango font description currently set on @source.</doc>
          <type name="utf8" c:type="const char*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a GESTextOverlay</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_halignment" c:identifier="ges_text_overlay_get_halignment">
        <doc xml:space="preserve">Get the horizontal aligment used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The horizontal aligment used by @source.</doc>
          <type name="TextHAlign" c:type="GESTextHAlign"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a GESTextOverlay</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_text" c:identifier="ges_text_overlay_get_text">
        <doc xml:space="preserve">Get the text currently set on @source.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The text currently set on @source.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a GESTextOverlay</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_valignment" c:identifier="ges_text_overlay_get_valignment">
        <doc xml:space="preserve">Get the vertical aligment used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The vertical aligment used by @source.</doc>
          <type name="TextVAlign" c:type="GESTextVAlign"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a GESTextOverlay</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_xpos" c:identifier="ges_text_overlay_get_xpos">
        <doc xml:space="preserve">Get the horizontal position used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The horizontal position used by @source.</doc>
          <type name="gdouble" c:type="const gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a GESTextOverlay</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_ypos" c:identifier="ges_text_overlay_get_ypos">
        <doc xml:space="preserve">Get the vertical position used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The vertical position used by @source.</doc>
          <type name="gdouble" c:type="const gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a GESTextOverlay</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_color" c:identifier="ges_text_overlay_set_color">
        <doc xml:space="preserve">Sets the color of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlay* to set</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
          <parameter name="color" transfer-ownership="none">
            <doc xml:space="preserve">The color @self is being set to</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_font_desc" c:identifier="ges_text_overlay_set_font_desc">
        <doc xml:space="preserve">Sets the pango font description of the text this track element
will render.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlay</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
          <parameter name="font_desc" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">the pango font description</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_halignment" c:identifier="ges_text_overlay_set_halignment">
        <doc xml:space="preserve">Sets the horizontal aligment of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlay* to set text on</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
          <parameter name="halign" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTextHAlign defining the horizontal alignment
of the text render by @self.</doc>
            <type name="TextHAlign" c:type="GESTextHAlign"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_text" c:identifier="ges_text_overlay_set_text">
        <doc xml:space="preserve">Sets the text this track element will render.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlay* to set text on</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
          <parameter name="text" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">the text to render. an internal copy of this text will be
made.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_valignment" c:identifier="ges_text_overlay_set_valignment">
        <doc xml:space="preserve">Sets the vertical aligment of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlay* to set text on</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
          <parameter name="valign" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTextVAlign defining the vertical alignment
of the text render by @self.</doc>
            <type name="TextVAlign" c:type="GESTextVAlign"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_xpos" c:identifier="ges_text_overlay_set_xpos">
        <doc xml:space="preserve">Sets the horizontal position of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlay* to set</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The horizontal position @self is being set to</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_ypos" c:identifier="ges_text_overlay_set_ypos">
        <doc xml:space="preserve">Sets the vertical position of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlay* to set</doc>
            <type name="TextOverlay" c:type="GESTextOverlay*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The vertical position @self is being set to</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <field name="parent">
        <type name="Operation" c:type="GESOperation"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TextOverlayPrivate" c:type="GESTextOverlayPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="TextOverlayClass" c:type="GESTextOverlayClass" glib:is-gtype-struct-for="TextOverlay">
      <field name="parent_class">
        <type name="OperationClass" c:type="GESOperationClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <class name="TextOverlayClip" c:symbol-prefix="text_overlay_clip" c:type="GESTextOverlayClip" parent="OverlayClip" glib:type-name="GESTextOverlayClip" glib:get-type="ges_text_overlay_clip_get_type" glib:type-struct="TextOverlayClipClass">
      <doc xml:space="preserve">Renders text onto the next lower priority stream using textrender.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_text_overlay_clip_new">
        <doc xml:space="preserve">Creates a new #GESTextOverlayClip</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created
#GESTextOverlayClip, or %NULL if there was an error.</doc>
          <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
        </return-value>
      </constructor>
      <method name="get_color" c:identifier="ges_text_overlay_clip_get_color" glib:get-property="color">
        <doc xml:space="preserve">Get the color used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The color used by @source.</doc>
          <type name="guint32" c:type="const guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTextOverlayClip</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_font_desc" c:identifier="ges_text_overlay_clip_get_font_desc" glib:get-property="font-desc">
        <doc xml:space="preserve">Get the pango font description used by @self.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The pango font description used by @self.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTextOverlayClip</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_halignment" c:identifier="ges_text_overlay_clip_get_halignment" glib:get-property="halignment">
        <doc xml:space="preserve">Get the horizontal aligment used by @self.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The horizontal aligment used by @self.</doc>
          <type name="TextHAlign" c:type="GESTextHAlign"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTextOverlayClip</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_text" c:identifier="ges_text_overlay_clip_get_text" glib:get-property="text">
        <doc xml:space="preserve">Get the text currently set on @self.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The text currently set on @self.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTextOverlayClip</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_valignment" c:identifier="ges_text_overlay_clip_get_valignment" glib:get-property="valignment">
        <doc xml:space="preserve">Get the vertical aligment used by @self.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The vertical aligment used by @self.</doc>
          <type name="TextVAlign" c:type="GESTextVAlign"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTextOverlayClip</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_xpos" c:identifier="ges_text_overlay_clip_get_xpos" glib:get-property="xpos">
        <doc xml:space="preserve">Get the horizontal position used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The horizontal position used by @source.</doc>
          <type name="gdouble" c:type="const gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTextOverlayClip</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_ypos" c:identifier="ges_text_overlay_clip_get_ypos" glib:get-property="ypos">
        <doc xml:space="preserve">Get the vertical position used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The vertical position used by @source.</doc>
          <type name="gdouble" c:type="const gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTextOverlayClip</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_color" c:identifier="ges_text_overlay_clip_set_color" glib:set-property="color">
        <doc xml:space="preserve">Sets the color of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlayClip* to set</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
          <parameter name="color" transfer-ownership="none">
            <doc xml:space="preserve">The color @self is being set to</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_font_desc" c:identifier="ges_text_overlay_clip_set_font_desc" glib:set-property="font-desc">
        <doc xml:space="preserve">Sets the pango font description of the text</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlayClip*</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
          <parameter name="font_desc" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">the pango font description</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_halign" c:identifier="ges_text_overlay_clip_set_halign">
        <doc xml:space="preserve">Sets the horizontal aligment of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlayClip* to set horizontal alignement of text on</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
          <parameter name="halign" transfer-ownership="none">
            <doc xml:space="preserve">#GESTextHAlign</doc>
            <type name="TextHAlign" c:type="GESTextHAlign"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_text" c:identifier="ges_text_overlay_clip_set_text" glib:set-property="text">
        <doc xml:space="preserve">Sets the text this clip will render.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlayClip* to set text on</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
          <parameter name="text" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">the text to render. an internal copy of this text will be
made.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_valign" c:identifier="ges_text_overlay_clip_set_valign">
        <doc xml:space="preserve">Sets the vertical aligment of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlayClip* to set vertical alignement of text on</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
          <parameter name="valign" transfer-ownership="none">
            <doc xml:space="preserve">#GESTextVAlign</doc>
            <type name="TextVAlign" c:type="GESTextVAlign"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_xpos" c:identifier="ges_text_overlay_clip_set_xpos" glib:set-property="xpos">
        <doc xml:space="preserve">Sets the horizontal position of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlayClip* to set</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The horizontal position @self is being set to</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_ypos" c:identifier="ges_text_overlay_clip_set_ypos" glib:set-property="ypos">
        <doc xml:space="preserve">Sets the vertical position of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTextOverlayClip* to set</doc>
            <type name="TextOverlayClip" c:type="GESTextOverlayClip*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The vertical position @self is being set to</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <property name="color" writable="1" construct="1" transfer-ownership="none" setter="set_color" getter="get_color" default-value="4294967295">
        <doc xml:space="preserve">The color of the text</doc>
        <type name="guint" c:type="guint"/>
      </property>
      <property name="font-desc" writable="1" construct="1" transfer-ownership="none" setter="set_font_desc" getter="get_font_desc" default-value="Serif 36">
        <doc xml:space="preserve">Pango font description string</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <property name="halignment" writable="1" construct="1" transfer-ownership="none" getter="get_halignment" default-value="GES_TEXT_HALIGN_CENTER">
        <doc xml:space="preserve">Horizontal alignment of the text</doc>
        <type name="TextHAlign"/>
      </property>
      <property name="text" writable="1" construct="1" transfer-ownership="none" setter="set_text" getter="get_text">
        <doc xml:space="preserve">The text to diplay</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <property name="valignment" writable="1" construct="1" transfer-ownership="none" getter="get_valignment" default-value="GES_TEXT_VALIGN_BASELINE">
        <doc xml:space="preserve">Vertical alignent of the text</doc>
        <type name="TextVAlign"/>
      </property>
      <property name="xpos" writable="1" construct="1" transfer-ownership="none" setter="set_xpos" getter="get_xpos" default-value="0.500000">
        <doc xml:space="preserve">The horizontal position of the text</doc>
        <type name="gdouble" c:type="gdouble"/>
      </property>
      <property name="ypos" writable="1" construct="1" transfer-ownership="none" setter="set_ypos" getter="get_ypos" default-value="0.500000">
        <doc xml:space="preserve">The vertical position of the text</doc>
        <type name="gdouble" c:type="gdouble"/>
      </property>
      <field name="parent">
        <type name="OverlayClip" c:type="GESOverlayClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TextOverlayClipPrivate" c:type="GESTextOverlayClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="TextOverlayClipClass" c:type="GESTextOverlayClipClass" glib:is-gtype-struct-for="TextOverlayClip">
      <field name="parent_class" readable="0" private="1">
        <type name="OverlayClipClass" c:type="GESOverlayClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="TextOverlayClipPrivate" c:type="GESTextOverlayClipPrivate" disguised="1" opaque="1"/>
    <record name="TextOverlayPrivate" c:type="GESTextOverlayPrivate" disguised="1" opaque="1"/>
    <enumeration name="TextVAlign" glib:type-name="GESTextVAlign" glib:get-type="ges_text_valign_get_type" c:type="GESTextVAlign">
      <doc xml:space="preserve">Vertical alignment of the text.</doc>
      <member name="baseline" value="0" c:identifier="GES_TEXT_VALIGN_BASELINE" glib:nick="baseline" glib:name="GES_TEXT_VALIGN_BASELINE">
        <doc xml:space="preserve">draw text on the baseline</doc>
      </member>
      <member name="bottom" value="1" c:identifier="GES_TEXT_VALIGN_BOTTOM" glib:nick="bottom" glib:name="GES_TEXT_VALIGN_BOTTOM">
        <doc xml:space="preserve">draw text on the bottom</doc>
      </member>
      <member name="top" value="2" c:identifier="GES_TEXT_VALIGN_TOP" glib:nick="top" glib:name="GES_TEXT_VALIGN_TOP">
        <doc xml:space="preserve">draw text on top</doc>
      </member>
      <member name="position" value="3" c:identifier="GES_TEXT_VALIGN_POSITION" glib:nick="position" glib:name="GES_TEXT_VALIGN_POSITION">
        <doc xml:space="preserve">draw text on ypos position</doc>
      </member>
      <member name="center" value="4" c:identifier="GES_TEXT_VALIGN_CENTER" glib:nick="center" glib:name="GES_TEXT_VALIGN_CENTER">
        <doc xml:space="preserve">draw text on the center</doc>
      </member>
      <member name="absolute" value="5" c:identifier="GES_TEXT_VALIGN_ABSOLUTE" glib:nick="absolute" glib:name="GES_TEXT_VALIGN_ABSOLUTE">
      </member>
    </enumeration>
    <class name="Timeline" c:symbol-prefix="timeline" c:type="GESTimeline" parent="Gst.Bin" glib:type-name="GESTimeline" glib:get-type="ges_timeline_get_type" glib:type-struct="TimelineClass">
      <doc xml:space="preserve">#GESTimeline is the central object for any multimedia timeline.

A timeline is composed of a set of #GESTrack-s and a set of
#GESLayer-s, which are added to the timeline using
ges_timeline_add_track() and ges_timeline_append_layer(), respectively.

The contained tracks define the supported types of the timeline
and provide the media output. Essentially, each track provides an
additional source #GstPad.

Most usage of a timeline will likely only need a single #GESAudioTrack
and/or a single #GESVideoTrack. You can create such a timeline with
ges_timeline_new_audio_video(). After this, you are unlikely to need to
work with the tracks directly.

A timeline's layers contain #GESClip-s, which in turn control the
creation of #GESTrackElement-s, which are added to the timeline's
tracks. See #GESTimeline::select-tracks-for-object if you wish to have
more control over which track a clip's elements are added to.

The layers are ordered, with higher priority layers having their
content prioritised in the tracks. This ordering can be changed using
ges_timeline_move_layer().

## Editing

See #GESTimelineElement for the various ways the elements of a timeline
can be edited.

If you change the timing or ordering of a timeline's
#GESTimelineElement-s, then these changes will not actually be taken
into account in the output of the timeline's tracks until the
ges_timeline_commit() method is called. This allows you to move its
elements around, say, in response to an end user's mouse dragging, with
little expense before finalising their effect on the produced data.

## Overlaps and Auto-Transitions

There are certain restrictions placed on how #GESSource-s may overlap
in a #GESTrack that belongs to a timeline. These will be enforced by
GES, so the user will not need to keep track of them, but they should
be aware that certain edits will be refused as a result if the overlap
rules would be broken.

Consider two #GESSource-s, `A` and `B`, with start times `startA` and
`startB`, and end times `endA` and `endB`, respectively. The start
time refers to their #GESTimelineElement:start, and the end time is
their #GESTimelineElement:start + #GESTimelineElement:duration. These
two sources *overlap* if:

+ they share the same #GESTrackElement:track (non %NULL), which belongs
  to the timeline;
+ they share the same #GES_TIMELINE_ELEMENT_LAYER_PRIORITY; and
+ `startA &lt; endB` and `startB &lt; endA `.

Note that when `startA = endB` or `startB = endA` then the two sources
will *touch* at their edges, but are not considered overlapping.

If, in addition, `startA &lt; startB &lt; endA`, then we can say that the
end of `A` overlaps the start of `B`.

If, instead, `startA &lt;= startB` and `endA &gt;= endB`, then we can say
that `A` fully overlaps `B`.

The overlap rules for a timeline are that:

1. One source cannot fully overlap another source.
2. A source can only overlap the end of up to one other source at its
   start.
3. A source can only overlap the start of up to one other source at its
   end.

The last two rules combined essentially mean that at any given timeline
position, only up to two #GESSource-s may overlap at that position. So
triple or more overlaps are not allowed.

If you switch on #GESTimeline:auto-transition, then at any moment when
the end of one source (the first source) overlaps the start of another
(the second source), a #GESTransitionClip will be automatically created
for the pair in the same layer and it will cover their overlap. If the
two elements are edited in a way such that the end of the first source
no longer overlaps the start of the second, the transition will be
automatically removed from the timeline. However, if the two sources
still overlap at the same edges after the edit, then the same
transition object will be kept, but with its timing and layer adjusted
accordingly.

NOTE: if you know what you are doing and want to be in full control of the
timeline layout, you can disable the edit APIs with
#ges_timeline_disable_edit_apis.

## Saving

To save/load a timeline, you can use the ges_timeline_load_from_uri()
and ges_timeline_save_to_uri() methods that use the default format.

## Playing

A timeline is a #GstBin with a source #GstPad for each of its
tracks, which you can fetch with ges_timeline_get_pad_for_track(). You
will likely want to link these to some compatible sink #GstElement-s to
be able to play or capture the content of the timeline.

You can use a #GESPipeline to easily preview/play the timeline's
content, or render it to a file.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <implements name="Gst.ChildProxy"/>
      <constructor name="new" c:identifier="ges_timeline_new">
        <doc xml:space="preserve">Creates a new empty timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The new timeline.</doc>
          <type name="Timeline" c:type="GESTimeline*"/>
        </return-value>
      </constructor>
      <constructor name="new_audio_video" c:identifier="ges_timeline_new_audio_video">
        <doc xml:space="preserve">Creates a new timeline containing a single #GESAudioTrack and a
single #GESVideoTrack.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The new timeline.</doc>
          <type name="Timeline" c:type="GESTimeline*"/>
        </return-value>
      </constructor>
      <constructor name="new_from_uri" c:identifier="ges_timeline_new_from_uri" throws="1">
        <doc xml:space="preserve">Creates a timeline from the given URI.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">A new timeline if the uri was loaded
successfully, or %NULL if the uri could not be loaded.</doc>
          <type name="Timeline" c:type="GESTimeline*"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">The URI to load from</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </constructor>
      <virtual-method name="group_added">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="group" transfer-ownership="none">
            <type name="Group" c:type="GESGroup*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="group_removed" introspectable="0">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="group" transfer-ownership="none">
            <type name="Group" c:type="GESGroup*"/>
          </parameter>
          <parameter name="children" transfer-ownership="none">
            <array name="GLib.PtrArray" c:type="GPtrArray*">
              <type name="gpointer" c:type="gpointer"/>
            </array>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="layer_added">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="layer" transfer-ownership="none">
            <type name="Layer" c:type="GESLayer*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="layer_removed">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="layer" transfer-ownership="none">
            <type name="Layer" c:type="GESLayer*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="track_added">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="track" transfer-ownership="none">
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="track_removed">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="track" transfer-ownership="none">
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="add_layer" c:identifier="ges_timeline_add_layer" deprecated="1" deprecated-version="1.18">
        <doc xml:space="preserve">Add a layer to the timeline.

If the layer contains #GESClip-s, then this may trigger the creation of
their core track element children for the timeline's tracks, and the
placement of the clip's children in the tracks of the timeline using
#GESTimeline::select-tracks-for-object. Some errors may occur if this
would break one of the configuration rules of the timeline in one of
its tracks. In such cases, some track elements would fail to be added
to their tracks, but this method would still return %TRUE. As such, it
is advised that you only add clips to layers that already part of a
timeline. In such situations, ges_layer_add_clip() is able to fail if
adding the clip would cause such an error.</doc>
        <doc-deprecated xml:space="preserve">This method requires you to ensure the layer's
#GESLayer:priority will be unique to the timeline. Use
ges_timeline_append_layer() and ges_timeline_move_layer() instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @layer was properly added.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The layer to add</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_track" c:identifier="ges_timeline_add_track">
        <doc xml:space="preserve">Add a track to the timeline.

If the timeline already contains clips, then this may trigger the
creation of their core track element children for the track, and the
placement of the clip's children in the track of the timeline using
#GESTimeline::select-tracks-for-object. Some errors may occur if this
would break one of the configuration rules for the timeline in the
track. In such cases, some track elements would fail to be added to the
track, but this method would still return %TRUE. As such, it is advised
that you avoid adding tracks to timelines that already contain clips.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @track was properly added.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">The track to add</doc>
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
        </parameters>
      </method>
      <method name="append_layer" c:identifier="ges_timeline_append_layer">
        <doc xml:space="preserve">Append a newly created layer to the timeline. The layer will
be added at the lowest #GESLayer:priority (numerically, the highest).</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The newly created layer.</doc>
          <type name="Layer" c:type="GESLayer*"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="commit" c:identifier="ges_timeline_commit">
        <doc xml:space="preserve">Commit all the pending changes of the clips contained in the
timeline.

When changes happen in a timeline, they are not immediately executed
internally, in a way that effects the output data of the timeline. You
should call this method when you are done with a set of changes and you
want them to be executed.

Any pending changes will be executed in the backend. The
#GESTimeline::commited signal will be emitted once this has completed.
You should not try to change the state of the timeline, seek it or add
tracks to it before receiving this signal. You can use
ges_timeline_commit_sync() if you do not want to perform other tasks in
the mean time.

Note that all the pending changes will automatically be executed when
the timeline goes from #GST_STATE_READY to #GST_STATE_PAUSED, which is
usually triggered by a corresponding state changes in a containing
#GESPipeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if pending changes were committed, or %FALSE if nothing
needed to be committed.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="commit_sync" c:identifier="ges_timeline_commit_sync">
        <doc xml:space="preserve">Commit all the pending changes of the clips contained in the
timeline and wait for the changes to complete.

See ges_timeline_commit().</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if pending changes were committed, or %FALSE if nothing
needed to be committed.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="disable_edit_apis" c:identifier="ges_timeline_disable_edit_apis" version="1.22">
        <doc xml:space="preserve">WARNING: When using that mode, GES won't guarantee the coherence of the
timeline. You need to ensure that the rules described in the [Overlaps and
auto transitions](#overlaps-and-autotransitions) section are respected any time
the timeline is [commited](ges_timeline_commit) (otherwise playback will most
probably fail in different ways).

When disabling editing APIs, GES won't be able to enforce the rules that
makes the timeline overall state to be valid but some feature won't be
usable:
  * #GESTimeline:snapping-distance
  * #GESTimeline:auto-transition</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="disable_edit_apis" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE to disable all the edit APIs so the user is in full
control of ensuring timeline state validity %FALSE otherwise.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="freeze_commit" c:identifier="ges_timeline_freeze_commit" version="1.20">
        <doc xml:space="preserve">Freezes the timeline from being committed. This is usually needed while the
timeline is being rendered to ensure that not change to the timeline are
taken into account during that moment. Once the rendering is done, you
should call #ges_timeline_thaw_commit so that committing becomes possible
again and any call to `commit()` that happened during the rendering is
actually taken into account.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_auto_transition" c:identifier="ges_timeline_get_auto_transition" glib:get-property="auto-transition">
        <doc xml:space="preserve">Gets #GESTimeline:auto-transition for the timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The auto-transition of @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_duration" c:identifier="ges_timeline_get_duration" glib:get-property="duration">
        <doc xml:space="preserve">Get the current #GESTimeline:duration of the timeline</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The current duration of @timeline.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_edit_apis_disabled" c:identifier="ges_timeline_get_edit_apis_disabled" version="1.22">
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if edit APIs are disabled, %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_element" c:identifier="ges_timeline_get_element">
        <doc xml:space="preserve">Gets the element contained in the timeline with the given name.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The timeline element in @timeline
with the given @name, or %NULL if it was not found.</doc>
          <type name="TimelineElement" c:type="GESTimelineElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the element to find</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_frame_at" c:identifier="ges_timeline_get_frame_at" version="1.18">
        <doc xml:space="preserve">This method allows you to convert a timeline #GstClockTime into its
corresponding #GESFrameNumber in the timeline's output.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The frame number @timestamp corresponds to.</doc>
          <type name="FrameNumber" c:type="GESFrameNumber"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="timestamp" transfer-ownership="none">
            <doc xml:space="preserve">The timestamp to get the corresponding frame number of</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_frame_time" c:identifier="ges_timeline_get_frame_time" version="1.18">
        <doc xml:space="preserve">This method allows you to convert a timeline output frame number into a
timeline #GstClockTime. For example, this time could be used to seek to a
particular frame in the timeline's output, or as the edit position for
an element within the timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The timestamp corresponding to @frame_number in the output of @self.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The self on which to retrieve the timestamp for @frame_number</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="frame_number" transfer-ownership="none">
            <doc xml:space="preserve">The frame number to get the corresponding timestamp of in the
               timeline coordinates</doc>
            <type name="FrameNumber" c:type="GESFrameNumber"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_groups" c:identifier="ges_timeline_get_groups">
        <doc xml:space="preserve">Get the list of #GESGroup-s present in the timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The list of
groups that contain clips present in @timeline's layers.
Must not be changed.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Group"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_layer" c:identifier="ges_timeline_get_layer">
        <doc xml:space="preserve">Retrieve the layer whose index in the timeline matches the given
priority.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The layer with the given
@priority, or %NULL if none was found.

Since 1.6</doc>
          <type name="Layer" c:type="GESLayer*"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline to retrieve a layer from</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="priority" transfer-ownership="none">
            <doc xml:space="preserve">The priority/index of the layer to find</doc>
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_layers" c:identifier="ges_timeline_get_layers">
        <doc xml:space="preserve">Get the list of #GESLayer-s present in the timeline.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The list of
layers present in @timeline sorted by priority.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Layer"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_pad_for_track" c:identifier="ges_timeline_get_pad_for_track">
        <doc xml:space="preserve">Search for the #GstPad corresponding to the given timeline's track.
You can link to this pad to receive the output data of the given track.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The pad corresponding to @track,
or %NULL if there is an error.</doc>
          <type name="Gst.Pad" c:type="GstPad*"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A track</doc>
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_snapping_distance" c:identifier="ges_timeline_get_snapping_distance" glib:get-property="snapping-distance">
        <doc xml:space="preserve">Gets the #GESTimeline:snapping-distance for the timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The snapping distance (in nanoseconds) of @timeline.</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_track_for_pad" c:identifier="ges_timeline_get_track_for_pad">
        <doc xml:space="preserve">Search for the #GESTrack corresponding to the given timeline's pad.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The track corresponding to @pad,
or %NULL if there is an error.</doc>
          <type name="Track" c:type="GESTrack*"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="pad" transfer-ownership="none">
            <doc xml:space="preserve">A pad</doc>
            <type name="Gst.Pad" c:type="GstPad*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_tracks" c:identifier="ges_timeline_get_tracks">
        <doc xml:space="preserve">Get the list of #GESTrack-s used by the timeline.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The list of tracks
used by @timeline.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="Track"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_empty" c:identifier="ges_timeline_is_empty">
        <doc xml:space="preserve">Check whether the timeline is empty or not.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @timeline is empty.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="load_from_uri" c:identifier="ges_timeline_load_from_uri" throws="1">
        <doc xml:space="preserve">Loads the contents of URI into the timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the timeline was loaded successfully from @uri.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">An empty #GESTimeline into which to load the formatter</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">The URI to load from</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="move_layer" c:identifier="ges_timeline_move_layer" version="1.16">
        <doc xml:space="preserve">Moves a layer within the timeline to the index given by
@new_layer_priority.
An index of 0 corresponds to the layer with the highest priority in a
timeline. If @new_layer_priority is greater than the number of layers
present in the timeline, it will become the lowest priority layer.</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">A layer within @timeline, whose priority should be changed</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </parameter>
          <parameter name="new_layer_priority" transfer-ownership="none">
            <doc xml:space="preserve">The new index for @layer</doc>
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="paste_element" c:identifier="ges_timeline_paste_element">
        <doc xml:space="preserve">Paste an element inside the timeline. @element **must** be the return of
ges_timeline_element_copy() with `deep=TRUE`,
and it should not be changed before pasting. @element itself is not
placed in the timeline, instead a new element is created, alike to the
originally copied element. Note that the originally copied element must
also lie within @timeline, at both the point of copying and pasting.

Pasting may fail if it would place the timeline in an unsupported
configuration.

After calling this function @element should not be used. In particular,
@element can **not** be pasted again. Instead, you can copy the
returned element and paste that copy (although, this is only possible
if the paste was successful).

See also ges_timeline_element_paste().</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The newly created element, or
%NULL if pasting fails.</doc>
          <type name="TimelineElement" c:type="GESTimelineElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline onto which @element should be pasted</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="element" transfer-ownership="none">
            <doc xml:space="preserve">The element to paste</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The position in the timeline @element should be pasted to,
i.e. the #GESTimelineElement:start value for the pasted element.</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
          <parameter name="layer_priority" transfer-ownership="none">
            <doc xml:space="preserve">The layer into which the element should be pasted.
-1 means paste to the same layer from which @element has been copied from</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove_layer" c:identifier="ges_timeline_remove_layer">
        <doc xml:space="preserve">Removes a layer from the timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @layer was properly removed.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The layer to remove</doc>
            <type name="Layer" c:type="GESLayer*"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove_track" c:identifier="ges_timeline_remove_track">
        <doc xml:space="preserve">Remove a track from the timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @track was properly removed.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">The track to remove</doc>
            <type name="Track" c:type="GESTrack*"/>
          </parameter>
        </parameters>
      </method>
      <method name="save_to_uri" c:identifier="ges_timeline_save_to_uri" throws="1">
        <doc xml:space="preserve">Saves the timeline to the given location. If @formatter_asset is %NULL,
the method will attempt to save in the same format the timeline was
loaded from, before defaulting to the formatter with highest rank.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @timeline was successfully saved to @uri.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">The location to save to</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="formatter_asset" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The formatter asset to use, or %NULL</doc>
            <type name="Asset" c:type="GESAsset*"/>
          </parameter>
          <parameter name="overwrite" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE to overwrite file if it exists</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_auto_transition" c:identifier="ges_timeline_set_auto_transition" glib:set-property="auto-transition">
        <doc xml:space="preserve">Sets #GESTimeline:auto-transition for the timeline. This will also set
the corresponding #GESLayer:auto-transition for all of the timeline's
layers to the same value. See ges_layer_set_auto_transition() if you
wish to set the layer's #GESLayer:auto-transition individually.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="auto_transition" transfer-ownership="none">
            <doc xml:space="preserve">Whether transitions should be automatically added
to @timeline's layers</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_snapping_distance" c:identifier="ges_timeline_set_snapping_distance" glib:set-property="snapping-distance">
        <doc xml:space="preserve">Sets #GESTimeline:snapping-distance for the timeline. This new value
will only effect future snappings and will not be used to snap the
current element positions within the timeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
          <parameter name="snapping_distance" transfer-ownership="none">
            <doc xml:space="preserve">The snapping distance to use (in nanoseconds)</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="thaw_commit" c:identifier="ges_timeline_thaw_commit" version="1.20">
        <doc xml:space="preserve">Thaw the timeline so that comiting becomes possible
again and any call to `commit()` that happened during the rendering is
actually taken into account.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="timeline" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimeline</doc>
            <type name="Timeline" c:type="GESTimeline*"/>
          </instance-parameter>
        </parameters>
      </method>
      <property name="auto-transition" writable="1" transfer-ownership="none" setter="set_auto_transition" getter="get_auto_transition" default-value="FALSE">
        <doc xml:space="preserve">Whether to automatically create a transition whenever two
#GESSource-s overlap in a track of the timeline. See
#GESLayer:auto-transition if you want this to only happen in some
layers.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="duration" transfer-ownership="none" getter="get_duration" default-value="18446744073709551615">
        <doc xml:space="preserve">The current duration (in nanoseconds) of the timeline. A timeline
'starts' at time 0, so this is the maximum end time of all of its
#GESTimelineElement-s.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="snapping-distance" writable="1" transfer-ownership="none" setter="set_snapping_distance" getter="get_snapping_distance" default-value="0">
        <doc xml:space="preserve">The distance (in nanoseconds) at which a #GESTimelineElement being
moved within the timeline should snap one of its #GESSource-s with
another #GESSource-s edge. See #GESEditMode for which edges can
snap during an edit. 0 means no snapping.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <field name="parent">
        <type name="Gst.Bin" c:type="GstBin"/>
      </field>
      <field name="layers">
        <doc xml:space="preserve">A list of #GESLayer-s sorted by
priority. NOTE: Do not modify.</doc>
        <type name="GLib.List" c:type="GList*">
          <type name="Layer"/>
        </type>
      </field>
      <field name="tracks">
        <doc xml:space="preserve">Deprecated:1.10: (element-type GES.Track): This is not thread
safe, use #ges_timeline_get_tracks instead.</doc>
        <type name="GLib.List" c:type="GList*">
          <type name="gpointer" c:type="gpointer"/>
        </type>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TimelinePrivate" c:type="GESTimelinePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <glib:signal name="commited" when="last">
        <doc xml:space="preserve">This signal will be emitted once the changes initiated by
ges_timeline_commit() have been executed in the backend. Use
ges_timeline_commit_sync() if you do not want to have to connect
to this signal.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
      </glib:signal>
      <glib:signal name="group-added" when="first">
        <doc xml:space="preserve">Will be emitted after the group is added to to the timeline. This can
happen when grouping with `ges_container_group`, or by adding
containers to a newly created group.

Note that this should not be emitted whilst a timeline is being
loaded from its #GESProject asset. You should connect to the
project's #GESProject::loaded signal if you want to know which groups
were created for the timeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="group" transfer-ownership="none">
            <doc xml:space="preserve">The group that was added to @timeline</doc>
            <type name="Group"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="group-removed" when="first">
        <doc xml:space="preserve">Will be emitted after the group is removed from the timeline through
`ges_container_ungroup`. Note that @group will no longer contain its
former children, these are held in @children.

Note that if a group is emptied, then it will no longer belong to the
timeline, but this signal will **not** be emitted in such a case.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="group" transfer-ownership="none">
            <doc xml:space="preserve">The group that was removed from @timeline</doc>
            <type name="Group"/>
          </parameter>
          <parameter name="children" transfer-ownership="none">
            <doc xml:space="preserve">A list
of #GESContainer-s that _were_ the children of the removed @group</doc>
            <array name="GLib.PtrArray">
              <type name="Container"/>
            </array>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="layer-added" when="first">
        <doc xml:space="preserve">Will be emitted after the layer is added to the timeline.

Note that this should not be emitted whilst a timeline is being
loaded from its #GESProject asset. You should connect to the
project's #GESProject::loaded signal if you want to know which
layers were created for the timeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The layer that was added to @timeline</doc>
            <type name="Layer"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="layer-removed" when="first">
        <doc xml:space="preserve">Will be emitted after the layer is removed from the timeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="layer" transfer-ownership="none">
            <doc xml:space="preserve">The layer that was removed from @timeline</doc>
            <type name="Layer"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="select-element-track" when="last" version="1.18">
        <doc xml:space="preserve">Simplified version of #GESTimeline::select-tracks-for-object which only
allows @track_element to be added to a single #GESTrack.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">A track to put @track_element into, or %NULL if
it should be discarded.</doc>
          <type name="Track"/>
        </return-value>
        <parameters>
          <parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The clip that @track_element is being added to</doc>
            <type name="Clip"/>
          </parameter>
          <parameter name="track_element" transfer-ownership="none">
            <doc xml:space="preserve">The element being added</doc>
            <type name="TrackElement"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="select-tracks-for-object" when="last">
        <doc xml:space="preserve">This will be emitted whenever the timeline needs to determine which
tracks a clip's children should be added to. The track element will
be added to each of the tracks given in the return. If a track
element is selected to go into multiple tracks, it will be copied
into the additional tracks, under the same clip. Note that the copy
will *not* keep its properties or state in sync with the original.

Connect to this signal once if you wish to control which element
should be added to which track. Doing so will overwrite the default
behaviour, which adds @track_element to all tracks whose
#GESTrack:track-type includes the @track_element's
#GESTrackElement:track-type.

Note that under the default track selection, if a clip would produce
multiple core children of the same #GESTrackType, it will choose
one of the core children arbitrarily to place in the corresponding
tracks, with a warning for the other core children that are not
placed in the track. For example, this would happen for a #GESUriClip
that points to a file that contains multiple audio streams. If you
wish to choose the stream, you could connect to this signal, and use,
say, ges_uri_source_asset_get_stream_info() to choose which core
source to add.

When a clip is first added to a timeline, its core elements will
be created for the current tracks in the timeline if they have not
already been created. Then this will be emitted for each of these
core children to select which tracks, if any, they should be added
to. It will then be called for any non-core children in the clip.

In addition, if a new track element is ever added to a clip in a
timeline (and it is not already part of a track) this will be emitted
to select which tracks the element should be added to.

Finally, as a special case, if a track is added to the timeline
*after* it already contains clips, then it will request the creation
of the clips' core elements of the corresponding type, if they have
not already been created, and this signal will be emitted for each of
these newly created elements. In addition, this will also be released
for all other track elements in the timeline's clips that have not
yet been assigned a track. However, in this final case, the timeline
will only check whether the newly added track appears in the track
list. If it does appear, the track element will be added to the newly
added track. All other tracks in the returned track list are ignored.

In this latter case, track elements that are already part of a track
will not be asked if they want to be copied into the new track. If
you wish to do this, you can use ges_clip_add_child_to_track().

Note that the returned #GPtrArray should own a new reference to each
of its contained #GESTrack. The timeline will set the #GDestroyNotify
free function on the #GPtrArray to dereference the elements.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">An array of
#GESTrack-s that @track_element should be added to, or %NULL to
not add the element to any track.</doc>
          <array name="GLib.PtrArray">
            <type name="Track"/>
          </array>
        </return-value>
        <parameters>
          <parameter name="clip" transfer-ownership="none">
            <doc xml:space="preserve">The clip that @track_element is being added to</doc>
            <type name="Clip"/>
          </parameter>
          <parameter name="track_element" transfer-ownership="none">
            <doc xml:space="preserve">The element being added</doc>
            <type name="TrackElement"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="snapping-ended" when="last">
        <doc xml:space="preserve">Will be emitted whenever a snapping event ends. After a snap event
has started (see #GESTimeline::snapping-started), it can later end
because either another timeline edit has occurred (which may or may
not have created a new snapping event), or because the timeline has
been committed.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="obj1" transfer-ownership="none">
            <doc xml:space="preserve">The first element that was snapping</doc>
            <type name="TrackElement"/>
          </parameter>
          <parameter name="obj2" transfer-ownership="none">
            <doc xml:space="preserve">The second element that was snapping</doc>
            <type name="TrackElement"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The position where the two objects were to be snapped to</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="snapping-started" when="last">
        <doc xml:space="preserve">Will be emitted whenever an element's movement invokes a snapping
event during an edit (usually of one of its ancestors) because its
start or end point lies within the #GESTimeline:snapping-distance of
another element's start or end point.

See #GESEditMode to see what can snap during an edit.

Note that only up to one snapping-started signal will be emitted per
element edit within a timeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="obj1" transfer-ownership="none">
            <doc xml:space="preserve">The first element that is snapping</doc>
            <type name="TrackElement"/>
          </parameter>
          <parameter name="obj2" transfer-ownership="none">
            <doc xml:space="preserve">The second element that is snapping</doc>
            <type name="TrackElement"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The position where the two objects will snap to</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="track-added" when="first">
        <doc xml:space="preserve">Will be emitted after the track is added to the timeline.

Note that this should not be emitted whilst a timeline is being
loaded from its #GESProject asset. You should connect to the
project's #GESProject::loaded signal if you want to know which
tracks were created for the timeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">The track that was added to @timeline</doc>
            <type name="Track"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="track-removed" when="first">
        <doc xml:space="preserve">Will be emitted after the track is removed from the timeline.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">The track that was removed from @timeline</doc>
            <type name="Track"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <record name="TimelineClass" c:type="GESTimelineClass" glib:is-gtype-struct-for="Timeline">
      <field name="parent_class">
        <doc xml:space="preserve">parent class</doc>
        <type name="Gst.BinClass" c:type="GstBinClass"/>
      </field>
      <field name="track_added">
        <callback name="track_added">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="timeline" transfer-ownership="none">
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
            <parameter name="track" transfer-ownership="none">
              <type name="Track" c:type="GESTrack*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="track_removed">
        <callback name="track_removed">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="timeline" transfer-ownership="none">
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
            <parameter name="track" transfer-ownership="none">
              <type name="Track" c:type="GESTrack*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="layer_added">
        <callback name="layer_added">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="timeline" transfer-ownership="none">
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
            <parameter name="layer" transfer-ownership="none">
              <type name="Layer" c:type="GESLayer*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="layer_removed">
        <callback name="layer_removed">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="timeline" transfer-ownership="none">
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
            <parameter name="layer" transfer-ownership="none">
              <type name="Layer" c:type="GESLayer*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="group_added">
        <callback name="group_added">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="timeline" transfer-ownership="none">
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
            <parameter name="group" transfer-ownership="none">
              <type name="Group" c:type="GESGroup*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="group_removed" introspectable="0">
        <callback name="group_removed" introspectable="0">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="timeline" transfer-ownership="none">
              <type name="Timeline" c:type="GESTimeline*"/>
            </parameter>
            <parameter name="group" transfer-ownership="none">
              <type name="Group" c:type="GESGroup*"/>
            </parameter>
            <parameter name="children" transfer-ownership="none">
              <array name="GLib.PtrArray" c:type="GPtrArray*">
                <type name="gpointer" c:type="gpointer"/>
              </array>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <class name="TimelineElement" c:symbol-prefix="timeline_element" c:type="GESTimelineElement" parent="GObject.InitiallyUnowned" abstract="1" glib:type-name="GESTimelineElement" glib:get-type="ges_timeline_element_get_type" glib:type-struct="TimelineElementClass">
      <doc xml:space="preserve">A #GESTimelineElement will have some temporal extent in its
corresponding #GESTimelineElement:timeline, controlled by its
#GESTimelineElement:start and #GESTimelineElement:duration. This
determines when its content will be displayed, or its effect applied,
in the timeline. Several objects may overlap within a given
#GESTimeline, in which case their #GESTimelineElement:priority is used
to determine their ordering in the timeline. Priority is mostly handled
internally by #GESLayer-s and #GESClip-s.

A timeline element can have a #GESTimelineElement:parent,
such as a #GESClip, which is responsible for controlling its timing.

## Editing

Elements can be moved around in their #GESTimelineElement:timeline by
setting their #GESTimelineElement:start and
#GESTimelineElement:duration using ges_timeline_element_set_start()
and ges_timeline_element_set_duration(). Additionally, which parts of
the underlying content are played in the timeline can be adjusted by
setting the #GESTimelineElement:in-point using
ges_timeline_element_set_inpoint(). The library also provides
ges_timeline_element_edit(), with various #GESEditMode-s, which can
adjust these properties in a convenient way, as well as introduce
similar changes in neighbouring or later elements in the timeline.

However, a timeline may refuse a change in these properties if they
would place the timeline in an unsupported configuration. See
#GESTimeline for its overlap rules.

Additionally, an edit may be refused if it would place one of the
timing properties out of bounds (such as a negative time value for
#GESTimelineElement:start, or having insufficient internal
content to last for the desired #GESTimelineElement:duration).

## Time Coordinates

There are three main sets of time coordinates to consider when using
timeline elements:

+ Timeline coordinates: these are the time coordinates used in the
  output of the timeline in its #GESTrack-s. Each track share the same
  coordinates, so there is only one set of coordinates for the
  timeline. These extend indefinitely from 0. The times used for
  editing (including setting #GESTimelineElement:start and
  #GESTimelineElement:duration) use these coordinates, since these
  define when an element is present and for how long the element lasts
  for in the timeline.
+ Internal source coordinates: these are the time coordinates used
  internally at the element's output. This is only really defined for
  #GESTrackElement-s, where it refers to time coordinates used at the
  final source pad of the wrapped #GstElement-s. However, these
  coordinates may also be used in a #GESClip in reference to its
  children. In particular, these are the coordinates used for
  #GESTimelineElement:in-point and #GESTimelineElement:max-duration.
+ Internal sink coordinates: these are the time coordinates used
  internally at the element's input. A #GESSource has no input, so
  these would be undefined. Otherwise, for most #GESTrackElement-s
  these will be the same set of coordinates as the internal source
  coordinates because the element does not change the timing
  internally. Only #GESBaseEffect can support elements where these
  are different. See #GESBaseEffect for more information.

You can determine the timeline time for a given internal source time
in a #GESTrack in a #GESClip using
ges_clip_get_timeline_time_from_internal_time(), and vice versa using
ges_clip_get_internal_time_from_timeline_time(), for the purposes of
editing and setting timings properties.

## Children Properties

If a timeline element owns another #GstObject and wishes to expose
some of its properties, it can do so by registering the property as one
of the timeline element's children properties using
ges_timeline_element_add_child_property(). The registered property of
the child can then be read and set using the
ges_timeline_element_get_child_property() and
ges_timeline_element_set_child_property() methods, respectively. Some
sub-classed objects will be created with pre-registered children
properties; for example, to expose part of an underlying #GstElement
that is used internally. The registered properties can be listed with
ges_timeline_element_list_children_properties().</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <virtual-method name="deep_copy">
        <doc xml:space="preserve">Prepare @copy for pasting as a copy of @self. At least by
copying the children properties of @self into @copy.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="copy" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="get_layer_priority" invoker="get_layer_priority" version="1.16">
        <doc xml:space="preserve">Gets the priority of the layer the element is in. A #GESGroup may span
several layers, so this would return the highest priority (numerically,
the smallest) amongst them.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The priority of the layer @self is in, or
#GES_TIMELINE_ELEMENT_NO_LAYER_PRIORITY if @self does not exist in a
layer.</doc>
          <type name="guint32" c:type="guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="get_natural_framerate" invoker="get_natural_framerate" version="1.18">
        <doc xml:space="preserve">Get the "natural" framerate of @self. This is to say, for example
for a #GESVideoUriSource the framerate of the source.

Note that a #GESAudioSource may also have a natural framerate if it derives
from the same #GESSourceClip asset as a #GESVideoSource, and its value will
be that of the video source. For example, if the uri of a #GESUriClip points
to a file that contains both a video and audio stream, then the corresponding
#GESAudioUriSource will share the natural framerate of the corresponding
#GESVideoUriSource.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">Whether @self has a natural framerate or not, @framerate_n
and @framerate_d will be set to, respectively, 0 and -1 if it is
not the case.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to get "natural" framerate from</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate numerator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
          <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate denominator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="get_track_types" invoker="get_track_types" version="1.6.0">
        <doc xml:space="preserve">Gets the track types that the element can interact with, i.e. the type
of #GESTrack it can exist in, or will create #GESTrackElement-s for.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The track types that @self supports.</doc>
          <type name="TrackType" c:type="GESTrackType"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="list_children_properties" introspectable="0">
        <doc xml:space="preserve">List the children properties that have been
registered for the element. The default implementation is able to fetch
all of these, so should be sufficient. If you overwrite this, you
should still call the default implementation to get the full list, and
then edit its content.</doc>
        <return-value>
          <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="n_properties" transfer-ownership="none">
            <type name="guint" c:type="guint*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="lookup_child" invoker="lookup_child">
        <doc xml:space="preserve">Looks up a child property of the element.

@prop_name can either be in the format "prop-name" or
"TypeName::prop-name", where "prop-name" is the name of the property
to look up (as used in g_object_get()), and "TypeName" is the type name
of the child (as returned by G_OBJECT_TYPE_NAME()). The latter format is
useful when two children of different types share the same property
name.

The first child found with the given "prop-name" property that was
registered with ges_timeline_element_add_child_property() (and of the
type "TypeName", if it was given) will be passed to @child, and the
registered specification of this property will be passed to @pspec.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if a child corresponding to the property was found, in
which case @child and @pspec are set.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="prop_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of a child property</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="child" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">The return location for the
found child</doc>
            <type name="GObject.Object" c:type="GObject**"/>
          </parameter>
          <parameter name="pspec" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">The return location for the
specification of the child property</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="paste" introspectable="0">
        <doc xml:space="preserve">Paste @self, which is the @copy prepared by @deep_copy, into
the timeline at the given @paste_position, with @ref_element as a
reference, which is the @self that was passed to @deep_copy.</doc>
        <return-value>
          <type name="TimelineElement" c:type="GESTimelineElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="ref_element" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
          <parameter name="paste_position" transfer-ownership="none">
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="ripple" invoker="ripple">
        <doc xml:space="preserve">Edits the start time of an element within its timeline in ripple mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_RIPPLE and
#GES_EDGE_NONE.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the ripple edit of @self completed, %FALSE on
failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to ripple</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The new start time of @self in ripple mode</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="ripple_end" invoker="ripple_end">
        <doc xml:space="preserve">Edits the end time of an element within its timeline in ripple mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_RIPPLE and
#GES_EDGE_END.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the ripple edit of @self completed, %FALSE on
failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to ripple</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="end" transfer-ownership="none">
            <doc xml:space="preserve">The new end time of @self in ripple mode</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="roll_end" invoker="roll_end">
        <doc xml:space="preserve">Edits the end time of an element within its timeline in roll mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_ROLL and
#GES_EDGE_END.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the roll edit of @self completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to roll</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="end" transfer-ownership="none">
            <doc xml:space="preserve">The new end time of @self in roll mode</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="roll_start" invoker="roll_start">
        <doc xml:space="preserve">Edits the start time of an element within its timeline in roll mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_ROLL and
#GES_EDGE_START.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the roll edit of @self completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to roll</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The new start time of @self in roll mode</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_child_property" version="1.16">
        <doc xml:space="preserve">Method for setting the child property given by
@pspec on @child to @value. Default implementation will use
g_object_set_property().</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="child" transfer-ownership="none">
            <type name="GObject.Object" c:type="GObject*"/>
          </parameter>
          <parameter name="pspec" transfer-ownership="none">
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <type name="GObject.Value" c:type="GValue*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_child_property_full" version="1.18" throws="1">
        <doc xml:space="preserve">Similar to @set_child_property, except setting can fail, with the @error
being optionally set. Default implementation will call @set_child_property
and return %TRUE.</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="child" transfer-ownership="none">
            <type name="GObject.Object" c:type="GObject*"/>
          </parameter>
          <parameter name="pspec" transfer-ownership="none">
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <type name="GObject.Value" c:type="const GValue*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_duration" invoker="set_duration">
        <doc xml:space="preserve">Sets #GESTimelineElement:duration for the element.

Whilst the element is part of a #GESTimeline, this is the same as
editing the element with ges_timeline_element_edit() under
#GES_EDIT_MODE_TRIM with #GES_EDGE_END. In particular, the
#GESTimelineElement:duration of the element may be snapped to a
different timeline time difference from the one given. In addition,
setting may fail if it would place the timeline in an unsupported
configuration, or the element does not have enough internal content to
last the desired duration.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @duration could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="duration" transfer-ownership="none">
            <doc xml:space="preserve">The desired duration in its timeline</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_inpoint" invoker="set_inpoint">
        <doc xml:space="preserve">Sets #GESTimelineElement:in-point for the element. If the new in-point
is above the current #GESTimelineElement:max-duration of the element,
this method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @inpoint could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="inpoint" transfer-ownership="none">
            <doc xml:space="preserve">The in-point, in internal time coordinates</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_max_duration" invoker="set_max_duration">
        <doc xml:space="preserve">Sets #GESTimelineElement:max-duration for the element. If the new
maximum duration is below the current #GESTimelineElement:in-point of
the element, this method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @maxduration could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="maxduration" transfer-ownership="none">
            <doc xml:space="preserve">The maximum duration, in internal time coordinates</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_parent" invoker="set_parent">
        <doc xml:space="preserve">Sets the #GESTimelineElement:parent for the element.

This is used internally and you should normally not call this. A
#GESContainer will set the #GESTimelineElement:parent of its children
in ges_container_add() and ges_container_remove().

Note, if @parent is not %NULL, @self must not already have a parent
set. Therefore, if you wish to switch parents, you will need to call
this function twice: first to set the parent to %NULL, and then to the
new parent.

If @parent is not %NULL, you must ensure it already has a
(non-floating) reference to @self before calling this.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @parent could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement
@parent (nullable): New parent of @self</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="parent" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_priority" invoker="set_priority" deprecated="1" deprecated-version="1.10">
        <doc xml:space="preserve">Sets the priority of the element within the containing layer.</doc>
        <doc-deprecated xml:space="preserve">All priority management is done by GES itself now.
To set #GESEffect priorities #ges_clip_set_top_effect_index should
be used.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @priority could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="priority" transfer-ownership="none">
            <doc xml:space="preserve">The priority</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="set_start" invoker="set_start">
        <doc xml:space="preserve">Sets #GESTimelineElement:start for the element. If the element has a
parent, this will also move its siblings with the same shift.

Whilst the element is part of a #GESTimeline, this is the same as
editing the element with ges_timeline_element_edit() under
#GES_EDIT_MODE_NORMAL with #GES_EDGE_NONE. In particular, the
#GESTimelineElement:start of the element may be snapped to a different
timeline time from the one given. In addition, setting may fail if it
would place the timeline in an unsupported configuration.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @start could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The desired start position of the element in its timeline</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="trim" invoker="trim">
        <doc xml:space="preserve">Edits the start time of an element within its timeline in trim mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_TRIM and
#GES_EDGE_START.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the trim edit of @self completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to trim</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The new start time of @self in trim mode</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="add_child_property" c:identifier="ges_timeline_element_add_child_property">
        <doc xml:space="preserve">Register a property of a child of the element to allow it to be
written with ges_timeline_element_set_child_property() and read with
ges_timeline_element_get_child_property(). A change in the property
will also appear in the #GESTimelineElement::deep-notify signal.

@pspec should be unique from other children properties that have been
registered on @self.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the property was successfully registered.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="pspec" transfer-ownership="none">
            <doc xml:space="preserve">The specification for the property to add</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </parameter>
          <parameter name="child" transfer-ownership="none">
            <doc xml:space="preserve">The #GstObject who the property belongs to</doc>
            <type name="GObject.Object" c:type="GObject*"/>
          </parameter>
        </parameters>
      </method>
      <method name="copy" c:identifier="ges_timeline_element_copy">
        <doc xml:space="preserve">Create a copy of @self. All the properties of @self are copied into
a new element, with the exception of #GESTimelineElement:parent,
#GESTimelineElement:timeline and #GESTimelineElement:name. Other data,
such the list of a #GESContainer's children, is **not** copied.

If @deep is %TRUE, then the new element is prepared so that it can be
used in ges_timeline_element_paste() or ges_timeline_paste_element().
In the case of copying a #GESContainer, this ensures that the children
of @self will also be pasted. The new element should not be used for
anything else and can only be used **once** in a pasting operation. In
particular, the new element itself is not an actual 'deep' copy of
@self, but should be thought of as an intermediate object used for a
single paste operation.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The newly create element, copied from @self.</doc>
          <type name="TimelineElement" c:type="GESTimelineElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to copy</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="deep" transfer-ownership="none">
            <doc xml:space="preserve">Whether the copy is needed for pasting</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="edit" c:identifier="ges_timeline_element_edit" version="1.18">
        <doc xml:space="preserve">See ges_timeline_element_edit_full(), which also gives an error.

Note that the @layers argument is currently ignored, so you should
just pass %NULL.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the edit of @self completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to edit</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="layers" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A whitelist of layers
where the edit can be performed, %NULL allows all layers in the
timeline.</doc>
            <type name="GLib.List" c:type="GList*">
              <type name="Layer"/>
            </type>
          </parameter>
          <parameter name="new_layer_priority" transfer-ownership="none">
            <doc xml:space="preserve">The priority/index of the layer @self should be
moved to. -1 means no move</doc>
            <type name="gint64" c:type="gint64"/>
          </parameter>
          <parameter name="mode" transfer-ownership="none">
            <doc xml:space="preserve">The edit mode</doc>
            <type name="EditMode" c:type="GESEditMode"/>
          </parameter>
          <parameter name="edge" transfer-ownership="none">
            <doc xml:space="preserve">The edge of @self where the edit should occur</doc>
            <type name="Edge" c:type="GESEdge"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The edit position: a new location for the edge of @self
(in nanoseconds) in the timeline coordinates</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </method>
      <method name="edit_full" c:identifier="ges_timeline_element_edit_full" version="1.18" throws="1">
        <doc xml:space="preserve">Edits the element within its timeline by adjusting its
#GESTimelineElement:start, #GESTimelineElement:duration or
#GESTimelineElement:in-point, and potentially doing the same for
other elements in the timeline. See #GESEditMode for details about each
edit mode. An edit may fail if it would place one of these properties
out of bounds, or if it would place the timeline in an unsupported
configuration.

Note that if you act on a #GESTrackElement, this will edit its parent
#GESClip instead. Moreover, for any #GESTimelineElement, if you select
#GES_EDGE_NONE for #GES_EDIT_MODE_NORMAL or #GES_EDIT_MODE_RIPPLE, this
will edit the toplevel instead, but still in such a way as to make the
#GESTimelineElement:start of @self reach the edit @position.

Note that if the element's timeline has a
#GESTimeline:snapping-distance set, then the edit position may be
snapped to the edge of some element under the edited element.

@new_layer_priority can be used to switch @self, and other elements
moved by the edit, to a new layer. New layers may be be created if the
the corresponding layer priority/index does not yet exist for the
timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the edit of @self completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to edit</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="new_layer_priority" transfer-ownership="none">
            <doc xml:space="preserve">The priority/index of the layer @self should be
moved to. -1 means no move</doc>
            <type name="gint64" c:type="gint64"/>
          </parameter>
          <parameter name="mode" transfer-ownership="none">
            <doc xml:space="preserve">The edit mode</doc>
            <type name="EditMode" c:type="GESEditMode"/>
          </parameter>
          <parameter name="edge" transfer-ownership="none">
            <doc xml:space="preserve">The edge of @self where the edit should occur</doc>
            <type name="Edge" c:type="GESEdge"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The edit position: a new location for the edge of @self
(in nanoseconds) in the timeline coordinates</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_child_properties" c:identifier="ges_timeline_element_get_child_properties" introspectable="0">
        <doc xml:space="preserve">Gets several of the children properties of the element. See
ges_timeline_element_get_child_property().</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="first_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the first child property to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="..." transfer-ownership="none">
            <doc xml:space="preserve">The return location for the first property, followed
optionally by more name/return location pairs, followed by %NULL</doc>
            <varargs/>
          </parameter>
        </parameters>
      </method>
      <method name="get_child_property" c:identifier="ges_timeline_element_get_child_property">
        <doc xml:space="preserve">Gets the property of a child of the element.

@property_name can either be in the format "prop-name" or
"TypeName::prop-name", where "prop-name" is the name of the property
to get (as used in g_object_get()), and "TypeName" is the type name of
the child (as returned by G_OBJECT_TYPE_NAME()). The latter format is
useful when two children of different types share the same property
name.

The first child found with the given "prop-name" property that was
registered with ges_timeline_element_add_child_property() (and of the
type "TypeName", if it was given) will have the corresponding
property copied into @value.

Note that ges_timeline_element_get_child_properties() may be more
convenient for C programming.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the property was found and copied to @value.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the child property to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" direction="out" caller-allocates="1" transfer-ownership="none">
            <doc xml:space="preserve">The return location for the value</doc>
            <type name="GObject.Value" c:type="GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_child_property_by_pspec" c:identifier="ges_timeline_element_get_child_property_by_pspec">
        <doc xml:space="preserve">Gets the property of a child of the element. Specifically, the property
corresponding to the @pspec used in
ges_timeline_element_add_child_property() is copied into @value.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="pspec" transfer-ownership="none">
            <doc xml:space="preserve">The specification of a registered child property to get</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </parameter>
          <parameter name="value" direction="out" caller-allocates="1" transfer-ownership="none">
            <doc xml:space="preserve">The return location for the value</doc>
            <type name="GObject.Value" c:type="GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_child_property_valist" c:identifier="ges_timeline_element_get_child_property_valist" introspectable="0">
        <doc xml:space="preserve">Gets several of the children properties of the element. See
ges_timeline_element_get_child_property().</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="first_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the first child property to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="var_args" transfer-ownership="none">
            <doc xml:space="preserve">The return location for the first property, followed
optionally by more name/return location pairs, followed by %NULL</doc>
            <type name="va_list" c:type="va_list"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_duration" c:identifier="ges_timeline_element_get_duration" glib:get-property="duration">
        <doc xml:space="preserve">Gets the #GESTimelineElement:duration for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The duration of @self (in nanoseconds).</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_inpoint" c:identifier="ges_timeline_element_get_inpoint">
        <doc xml:space="preserve">Gets the #GESTimelineElement:in-point for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The in-point of @self (in nanoseconds).</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_layer_priority" c:identifier="ges_timeline_element_get_layer_priority" version="1.16">
        <doc xml:space="preserve">Gets the priority of the layer the element is in. A #GESGroup may span
several layers, so this would return the highest priority (numerically,
the smallest) amongst them.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The priority of the layer @self is in, or
#GES_TIMELINE_ELEMENT_NO_LAYER_PRIORITY if @self does not exist in a
layer.</doc>
          <type name="guint32" c:type="guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_max_duration" c:identifier="ges_timeline_element_get_max_duration" glib:get-property="max-duration">
        <doc xml:space="preserve">Gets the #GESTimelineElement:max-duration for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The max-duration of @self (in nanoseconds).</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_name" c:identifier="ges_timeline_element_get_name" glib:get-property="name">
        <doc xml:space="preserve">Gets the #GESTimelineElement:name for the element.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The name of @self.</doc>
          <type name="utf8" c:type="gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_natural_framerate" c:identifier="ges_timeline_element_get_natural_framerate" version="1.18">
        <doc xml:space="preserve">Get the "natural" framerate of @self. This is to say, for example
for a #GESVideoUriSource the framerate of the source.

Note that a #GESAudioSource may also have a natural framerate if it derives
from the same #GESSourceClip asset as a #GESVideoSource, and its value will
be that of the video source. For example, if the uri of a #GESUriClip points
to a file that contains both a video and audio stream, then the corresponding
#GESAudioUriSource will share the natural framerate of the corresponding
#GESVideoUriSource.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">Whether @self has a natural framerate or not, @framerate_n
and @framerate_d will be set to, respectively, 0 and -1 if it is
not the case.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to get "natural" framerate from</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate numerator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
          <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate denominator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_parent" c:identifier="ges_timeline_element_get_parent" glib:get-property="parent">
        <doc xml:space="preserve">Gets the #GESTimelineElement:parent for the element.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The parent of @self, or %NULL if
@self has no parent.</doc>
          <type name="TimelineElement" c:type="GESTimelineElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_priority" c:identifier="ges_timeline_element_get_priority" glib:get-property="priority">
        <doc xml:space="preserve">Gets the #GESTimelineElement:priority for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The priority of @self.</doc>
          <type name="guint32" c:type="guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_start" c:identifier="ges_timeline_element_get_start" glib:get-property="start">
        <doc xml:space="preserve">Gets the #GESTimelineElement:start for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The start of @self (in nanoseconds).</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_timeline" c:identifier="ges_timeline_element_get_timeline" glib:get-property="timeline">
        <doc xml:space="preserve">Gets the #GESTimelineElement:timeline for the element.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The timeline of @self, or %NULL
if @self has no timeline.</doc>
          <type name="Timeline" c:type="GESTimeline*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_toplevel_parent" c:identifier="ges_timeline_element_get_toplevel_parent">
        <doc xml:space="preserve">Gets the toplevel #GESTimelineElement:parent of the element.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The toplevel parent of @self.</doc>
          <type name="TimelineElement" c:type="GESTimelineElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to get the toplevel parent from</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_track_types" c:identifier="ges_timeline_element_get_track_types" version="1.6.0">
        <doc xml:space="preserve">Gets the track types that the element can interact with, i.e. the type
of #GESTrack it can exist in, or will create #GESTrackElement-s for.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The track types that @self supports.</doc>
          <type name="TrackType" c:type="GESTrackType"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="list_children_properties" c:identifier="ges_timeline_element_list_children_properties">
        <doc xml:space="preserve">Get a list of children properties of the element, which is a list of
all the specifications passed to
ges_timeline_element_add_child_property().</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">An array of
#GParamSpec corresponding to the child properties of @self, or %NULL if
something went wrong.</doc>
          <array length="0" zero-terminated="0" c:type="GParamSpec**">
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </array>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="n_properties" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The return location for the length of the
returned array</doc>
            <type name="guint" c:type="guint*"/>
          </parameter>
        </parameters>
      </method>
      <method name="lookup_child" c:identifier="ges_timeline_element_lookup_child">
        <doc xml:space="preserve">Looks up a child property of the element.

@prop_name can either be in the format "prop-name" or
"TypeName::prop-name", where "prop-name" is the name of the property
to look up (as used in g_object_get()), and "TypeName" is the type name
of the child (as returned by G_OBJECT_TYPE_NAME()). The latter format is
useful when two children of different types share the same property
name.

The first child found with the given "prop-name" property that was
registered with ges_timeline_element_add_child_property() (and of the
type "TypeName", if it was given) will be passed to @child, and the
registered specification of this property will be passed to @pspec.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if a child corresponding to the property was found, in
which case @child and @pspec are set.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="prop_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of a child property</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="child" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">The return location for the
found child</doc>
            <type name="GObject.Object" c:type="GObject**"/>
          </parameter>
          <parameter name="pspec" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">The return location for the
specification of the child property</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
          </parameter>
        </parameters>
      </method>
      <method name="paste" c:identifier="ges_timeline_element_paste" version="1.6.0">
        <doc xml:space="preserve">Paste an element inside the same timeline and layer as @self. @self
**must** be the return of ges_timeline_element_copy() with `deep=TRUE`,
and it should not be changed before pasting.
@self is not placed in the timeline, instead a new element is created,
alike to the originally copied element. Note that the originally
copied element must stay within the same timeline and layer, at both
the point of copying and pasting.

Pasting may fail if it would place the timeline in an unsupported
configuration.

After calling this function @element should not be used. In particular,
@element can **not** be pasted again. Instead, you can copy the
returned element and paste that copy (although, this is only possible
if the paste was successful).

See also ges_timeline_paste_element().</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The newly created element, or
%NULL if pasting fails.</doc>
          <type name="TimelineElement" c:type="GESTimelineElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to paste</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="paste_position" transfer-ownership="none">
            <doc xml:space="preserve">The position in the timeline @element should be pasted
to, i.e. the #GESTimelineElement:start value for the pasted element.</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove_child_property" c:identifier="ges_timeline_element_remove_child_property">
        <doc xml:space="preserve">Remove a child property from the element. @pspec should be a
specification that was passed to
ges_timeline_element_add_child_property(). The corresponding property
will no longer be registered as a child property for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the property was successfully un-registered for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="pspec" transfer-ownership="none">
            <doc xml:space="preserve">The specification for the property to remove</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </parameter>
        </parameters>
      </method>
      <method name="ripple" c:identifier="ges_timeline_element_ripple">
        <doc xml:space="preserve">Edits the start time of an element within its timeline in ripple mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_RIPPLE and
#GES_EDGE_NONE.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the ripple edit of @self completed, %FALSE on
failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to ripple</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The new start time of @self in ripple mode</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="ripple_end" c:identifier="ges_timeline_element_ripple_end">
        <doc xml:space="preserve">Edits the end time of an element within its timeline in ripple mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_RIPPLE and
#GES_EDGE_END.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the ripple edit of @self completed, %FALSE on
failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to ripple</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="end" transfer-ownership="none">
            <doc xml:space="preserve">The new end time of @self in ripple mode</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="roll_end" c:identifier="ges_timeline_element_roll_end">
        <doc xml:space="preserve">Edits the end time of an element within its timeline in roll mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_ROLL and
#GES_EDGE_END.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the roll edit of @self completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to roll</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="end" transfer-ownership="none">
            <doc xml:space="preserve">The new end time of @self in roll mode</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="roll_start" c:identifier="ges_timeline_element_roll_start">
        <doc xml:space="preserve">Edits the start time of an element within its timeline in roll mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_ROLL and
#GES_EDGE_START.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the roll edit of @self completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to roll</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The new start time of @self in roll mode</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_properties" c:identifier="ges_timeline_element_set_child_properties" introspectable="0">
        <doc xml:space="preserve">Sets several of the children properties of the element. See
ges_timeline_element_set_child_property().</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="first_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the first child property to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="..." transfer-ownership="none">
            <doc xml:space="preserve">The value for the first property, followed optionally by more
name/value pairs, followed by %NULL</doc>
            <varargs/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_property" c:identifier="ges_timeline_element_set_child_property">
        <doc xml:space="preserve">See ges_timeline_element_set_child_property_full(), which also gives an
error.

Note that ges_timeline_element_set_child_properties() may be more
convenient for C programming.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the property was found and set.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the child property to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set the property to</doc>
            <type name="GObject.Value" c:type="const GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_property_by_pspec" c:identifier="ges_timeline_element_set_child_property_by_pspec">
        <doc xml:space="preserve">Sets the property of a child of the element. Specifically, the property
corresponding to the @pspec used in
ges_timeline_element_add_child_property() is set to @value.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="pspec" transfer-ownership="none">
            <doc xml:space="preserve">The specification of a registered child property to set</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set the property to</doc>
            <type name="GObject.Value" c:type="const GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_property_full" c:identifier="ges_timeline_element_set_child_property_full" version="1.18" throws="1">
        <doc xml:space="preserve">Sets the property of a child of the element.

@property_name can either be in the format "prop-name" or
"TypeName::prop-name", where "prop-name" is the name of the property
to set (as used in g_object_set()), and "TypeName" is the type name of
the child (as returned by G_OBJECT_TYPE_NAME()). The latter format is
useful when two children of different types share the same property
name.

The first child found with the given "prop-name" property that was
registered with ges_timeline_element_add_child_property() (and of the
type "TypeName", if it was given) will have the corresponding
property set to @value. Other children that may have also matched the
property name (and type name) are left unchanged!</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the property was found and set.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the child property to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value to set the property to</doc>
            <type name="GObject.Value" c:type="const GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_property_valist" c:identifier="ges_timeline_element_set_child_property_valist" introspectable="0">
        <doc xml:space="preserve">Sets several of the children properties of the element. See
ges_timeline_element_set_child_property().</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="first_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the first child property to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="var_args" transfer-ownership="none">
            <doc xml:space="preserve">The value for the first property, followed optionally by more
name/value pairs, followed by %NULL</doc>
            <type name="va_list" c:type="va_list"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_duration" c:identifier="ges_timeline_element_set_duration" glib:set-property="duration">
        <doc xml:space="preserve">Sets #GESTimelineElement:duration for the element.

Whilst the element is part of a #GESTimeline, this is the same as
editing the element with ges_timeline_element_edit() under
#GES_EDIT_MODE_TRIM with #GES_EDGE_END. In particular, the
#GESTimelineElement:duration of the element may be snapped to a
different timeline time difference from the one given. In addition,
setting may fail if it would place the timeline in an unsupported
configuration, or the element does not have enough internal content to
last the desired duration.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @duration could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="duration" transfer-ownership="none">
            <doc xml:space="preserve">The desired duration in its timeline</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_inpoint" c:identifier="ges_timeline_element_set_inpoint">
        <doc xml:space="preserve">Sets #GESTimelineElement:in-point for the element. If the new in-point
is above the current #GESTimelineElement:max-duration of the element,
this method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @inpoint could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="inpoint" transfer-ownership="none">
            <doc xml:space="preserve">The in-point, in internal time coordinates</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_max_duration" c:identifier="ges_timeline_element_set_max_duration" glib:set-property="max-duration">
        <doc xml:space="preserve">Sets #GESTimelineElement:max-duration for the element. If the new
maximum duration is below the current #GESTimelineElement:in-point of
the element, this method will fail.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @maxduration could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="maxduration" transfer-ownership="none">
            <doc xml:space="preserve">The maximum duration, in internal time coordinates</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_name" c:identifier="ges_timeline_element_set_name" glib:set-property="name">
        <doc xml:space="preserve">Sets the #GESTimelineElement:name for the element. If %NULL is given
for @name, then the library will instead generate a new name based on
the type name of the element, such as the name "uriclip3" for a
#GESUriClip, and will set that name instead.

If @self already has a #GESTimelineElement:timeline, you should not
call this function with @name set to %NULL.

You should ensure that, within each #GESTimeline, every element has a
unique name. If you call this function with @name as %NULL, then
the library should ensure that the set generated name is unique from
previously **generated** names. However, if you choose a @name that
interferes with the naming conventions of the library, the library will
attempt to ensure that the generated names will not conflict with the
chosen name, which may lead to a different name being set instead, but
the uniqueness between generated and user-chosen names is not
guaranteed.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @name or a generated name for @self could be set.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="name" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The name @self should take</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_parent" c:identifier="ges_timeline_element_set_parent" glib:set-property="parent">
        <doc xml:space="preserve">Sets the #GESTimelineElement:parent for the element.

This is used internally and you should normally not call this. A
#GESContainer will set the #GESTimelineElement:parent of its children
in ges_container_add() and ges_container_remove().

Note, if @parent is not %NULL, @self must not already have a parent
set. Therefore, if you wish to switch parents, you will need to call
this function twice: first to set the parent to %NULL, and then to the
new parent.

If @parent is not %NULL, you must ensure it already has a
(non-floating) reference to @self before calling this.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @parent could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement
@parent (nullable): New parent of @self</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="parent" transfer-ownership="none">
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_priority" c:identifier="ges_timeline_element_set_priority" glib:set-property="priority" deprecated="1" deprecated-version="1.10">
        <doc xml:space="preserve">Sets the priority of the element within the containing layer.</doc>
        <doc-deprecated xml:space="preserve">All priority management is done by GES itself now.
To set #GESEffect priorities #ges_clip_set_top_effect_index should
be used.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @priority could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="priority" transfer-ownership="none">
            <doc xml:space="preserve">The priority</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_start" c:identifier="ges_timeline_element_set_start" glib:set-property="start">
        <doc xml:space="preserve">Sets #GESTimelineElement:start for the element. If the element has a
parent, this will also move its siblings with the same shift.

Whilst the element is part of a #GESTimeline, this is the same as
editing the element with ges_timeline_element_edit() under
#GES_EDIT_MODE_NORMAL with #GES_EDGE_NONE. In particular, the
#GESTimelineElement:start of the element may be snapped to a different
timeline time from the one given. In addition, setting may fail if it
would place the timeline in an unsupported configuration.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @start could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The desired start position of the element in its timeline</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_timeline" c:identifier="ges_timeline_element_set_timeline" glib:set-property="timeline">
        <doc xml:space="preserve">Sets the #GESTimelineElement:timeline of the element.

This is used internally and you should normally not call this. A
#GESClip will have its #GESTimelineElement:timeline set through its
#GESLayer. A #GESTrack will similarly take care of setting the
#GESTimelineElement:timeline of its #GESTrackElement-s. A #GESGroup
will adopt the same #GESTimelineElement:timeline as its children.

If @timeline is %NULL, this will stop its current
#GESTimelineElement:timeline from tracking it, otherwise @timeline will
start tracking @self. Note, in the latter case, @self must not already
have a timeline set. Therefore, if you wish to switch timelines, you
will need to call this function twice: first to set the timeline to
%NULL, and then to the new timeline.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @timeline could be set for @self.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTimelineElement
@timeline (nullable): The #GESTimeline @self should be in</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
        </parameters>
      </method>
      <method name="trim" c:identifier="ges_timeline_element_trim">
        <doc xml:space="preserve">Edits the start time of an element within its timeline in trim mode.
See ges_timeline_element_edit() with #GES_EDIT_MODE_TRIM and
#GES_EDGE_START.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the trim edit of @self completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTimelineElement to trim</doc>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </instance-parameter>
          <parameter name="start" transfer-ownership="none">
            <doc xml:space="preserve">The new start time of @self in trim mode</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
      <property name="duration" writable="1" transfer-ownership="none" setter="set_duration" getter="get_duration" default-value="18446744073709551615">
        <doc xml:space="preserve">The duration that the element is in effect for in the timeline (a
time difference in nanoseconds using the time coordinates of the
timeline). For example, for a source element, this would determine
for how long it should output its internal content for. For an
operation element, this would determine for how long its effect
should be applied to any source content.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="in-point" writable="1" transfer-ownership="none" default-value="0">
        <doc xml:space="preserve">The initial offset to use internally when outputting content (in
nanoseconds, but in the time coordinates of the internal content).

For example, for a #GESVideoUriSource that references some media
file, the "internal content" is the media file data, and the
in-point would correspond to some timestamp in the media file.
When playing the timeline, and when the element is first reached at
timeline-time #GESTimelineElement:start, it will begin outputting the
data from the timestamp in-point **onwards**, until it reaches the
end of its #GESTimelineElement:duration in the timeline.

For elements that have no internal content, this should be kept
as 0.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="max-duration" writable="1" construct="1" transfer-ownership="none" setter="set_max_duration" getter="get_max_duration" default-value="18446744073709551615">
        <doc xml:space="preserve">The full duration of internal content that is available (a time
difference in nanoseconds using the time coordinates of the internal
content).

This will act as a cap on the #GESTimelineElement:in-point of the
element (which is in the same time coordinates), and will sometimes
be used to limit the #GESTimelineElement:duration of the element in
the timeline.

For example, for a #GESVideoUriSource that references some media
file, this would be the length of the media file.

For elements that have no internal content, or whose content is
indefinite, this should be kept as #GST_CLOCK_TIME_NONE.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="name" writable="1" construct="1" transfer-ownership="none" setter="set_name" getter="get_name" default-value="NULL">
        <doc xml:space="preserve">The name of the element. This should be unique within its timeline.</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <property name="parent" writable="1" transfer-ownership="none" setter="set_parent" getter="get_parent">
        <doc xml:space="preserve">The parent container of the element.</doc>
        <type name="TimelineElement"/>
      </property>
      <property name="priority" deprecated="1" deprecated-version="1.10" writable="1" transfer-ownership="none" setter="set_priority" getter="get_priority" default-value="0">
        <doc xml:space="preserve">The priority of the element.</doc>
        <doc-deprecated xml:space="preserve">Priority management is now done by GES itself.</doc-deprecated>
        <type name="guint" c:type="guint"/>
      </property>
      <property name="serialize" writable="1" transfer-ownership="none" default-value="TRUE">
        <doc xml:space="preserve">Whether the element should be serialized.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="start" writable="1" transfer-ownership="none" setter="set_start" getter="get_start" default-value="0">
        <doc xml:space="preserve">The starting position of the element in the timeline (in nanoseconds
and in the time coordinates of the timeline). For example, for a
source element, this would determine the time at which it should
start outputting its internal content. For an operation element, this
would determine the time at which it should start applying its effect
to any source content.</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="timeline" writable="1" transfer-ownership="none" setter="set_timeline" getter="get_timeline">
        <doc xml:space="preserve">The timeline that the element lies within.</doc>
        <type name="Timeline"/>
      </property>
      <field name="parent_instance">
        <type name="GObject.InitiallyUnowned" c:type="GInitiallyUnowned"/>
      </field>
      <field name="parent">
        <doc xml:space="preserve">The #GESTimelineElement:parent of the element</doc>
        <type name="TimelineElement" c:type="GESTimelineElement*"/>
      </field>
      <field name="asset">
        <doc xml:space="preserve">The #GESAsset from which the object has been extracted</doc>
        <type name="Asset" c:type="GESAsset*"/>
      </field>
      <field name="start">
        <doc xml:space="preserve">The #GESTimelineElement:start of the element</doc>
        <type name="Gst.ClockTime" c:type="GstClockTime"/>
      </field>
      <field name="inpoint">
        <doc xml:space="preserve">The #GESTimelineElement:in-point of the element</doc>
        <type name="Gst.ClockTime" c:type="GstClockTime"/>
      </field>
      <field name="duration">
        <doc xml:space="preserve">The #GESTimelineElement:duration of the element</doc>
        <type name="Gst.ClockTime" c:type="GstClockTime"/>
      </field>
      <field name="maxduration">
        <doc xml:space="preserve">The #GESTimelineElement:max-duration of the element</doc>
        <type name="Gst.ClockTime" c:type="GstClockTime"/>
      </field>
      <field name="priority">
        <doc xml:space="preserve">The #GESTimelineElement:priority of the element</doc>
        <type name="guint32" c:type="guint32"/>
      </field>
      <field name="timeline">
        <doc xml:space="preserve">The #GESTimelineElement:timeline of the element</doc>
        <type name="Timeline" c:type="GESTimeline*"/>
      </field>
      <field name="name">
        <doc xml:space="preserve">The #GESTimelineElement:name of the element</doc>
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TimelineElementPrivate" c:type="GESTimelineElementPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="20">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <glib:signal name="child-property-added" when="first" version="1.18">
        <doc xml:space="preserve">Emitted when the element has a new child property registered. See
ges_timeline_element_add_child_property().

Note that some GES elements will be automatically created with
pre-registered children properties. You can use
ges_timeline_element_list_children_properties() to list these.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="prop_object" transfer-ownership="none">
            <doc xml:space="preserve">The child whose property has been registered</doc>
            <type name="GObject.Object"/>
          </parameter>
          <parameter name="prop" transfer-ownership="none">
            <doc xml:space="preserve">The specification for the property that has been registered</doc>
            <type name="GObject.ParamSpec"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="child-property-removed" when="first" version="1.18">
        <doc xml:space="preserve">Emitted when the element has a child property unregistered. See
ges_timeline_element_remove_child_property().</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="prop_object" transfer-ownership="none">
            <doc xml:space="preserve">The child whose property has been unregistered</doc>
            <type name="GObject.Object"/>
          </parameter>
          <parameter name="prop" transfer-ownership="none">
            <doc xml:space="preserve">The specification for the property that has been unregistered</doc>
            <type name="GObject.ParamSpec"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="deep-notify" when="first" no-recurse="1" detailed="1" no-hooks="1">
        <doc xml:space="preserve">Emitted when a child of the element has one of its registered
properties set. See ges_timeline_element_add_child_property().
Note that unlike #GObject::notify, a child property name can not be
used as a signal detail.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="prop_object" transfer-ownership="none">
            <doc xml:space="preserve">The child whose property has been set</doc>
            <type name="GObject.Object"/>
          </parameter>
          <parameter name="prop" transfer-ownership="none">
            <doc xml:space="preserve">The specification for the property that been set</doc>
            <type name="GObject.ParamSpec"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <record name="TimelineElementClass" c:type="GESTimelineElementClass" glib:is-gtype-struct-for="TimelineElement">
      <doc xml:space="preserve">The #GESTimelineElement base class. Subclasses should override at least
@set_start @set_inpoint @set_duration @ripple @ripple_end @roll_start
@roll_end and @trim.

Vmethods in subclasses should apply all the operation they need to but
the real method implementation is in charge of setting the proper field,
and emitting the notify signal.</doc>
      <field name="parent_class">
        <type name="GObject.InitiallyUnownedClass" c:type="GInitiallyUnownedClass"/>
      </field>
      <field name="set_parent">
        <doc xml:space="preserve">Method called just before the #GESTimelineElement:parent
is set.</doc>
        <callback name="set_parent">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @parent could be set for @self.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement
@parent (nullable): New parent of @self</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="parent" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="set_start">
        <doc xml:space="preserve">Method called just before the #GESTimelineElement:start is
set. This method should check whether the #GESTimelineElement:start can
be changed to the new value and to otherwise prepare the element in
response to what the new value will be. A return of %FALSE means that
the property should not be set. A return of %TRUE means that the
property should be set to the value given to the setter and a notify
emitted. A return of -1 means that the property should not be set but
the setter should still return %TRUE (normally because the method
already handled setting the value, potentially to a snapped value, and
emitted the notify signal).
#GESTimelineElement:duration is set. This method should check
whether the #GESTimelineElement:duration can be changed to the new
value and to otherwise prepare the element in response to what the new
value will be. A return of %FALSE means that the property should not be
set. A return of %TRUE means that the property should be set to the
value given to the setter and a notify emitted. A return of -1 means
that the property should not be set but the setter should still return
%TRUE (normally because the method already handled setting the value,
potentially to a snapped value, and emitted the notify signal).</doc>
        <callback name="set_start">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @start could be set for @self.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="start" transfer-ownership="none">
              <doc xml:space="preserve">The desired start position of the element in its timeline</doc>
              <type name="Gst.ClockTime" c:type="GstClockTime"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="set_inpoint">
        <doc xml:space="preserve">Method called just before the
#GESTimelineElement:in-point is set to a new value. This method should
not set the #GESTimelineElement:in-point itself, but should check
whether it can be changed to the new value and to otherwise prepare the
element in response to what the new value will be. A return of %FALSE
means that the property should not be set.</doc>
        <callback name="set_inpoint">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @inpoint could be set for @self.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="inpoint" transfer-ownership="none">
              <doc xml:space="preserve">The in-point, in internal time coordinates</doc>
              <type name="Gst.ClockTime" c:type="GstClockTime"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="set_duration">
        <callback name="set_duration">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @duration could be set for @self.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="duration" transfer-ownership="none">
              <doc xml:space="preserve">The desired duration in its timeline</doc>
              <type name="Gst.ClockTime" c:type="GstClockTime"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="set_max_duration">
        <doc xml:space="preserve">Method called just before the
#GESTimelineElement:max-duration is set. This method should
not set the #GESTimelineElement:max-duration itself, but should check
whether it can be changed to the new value and to otherwise prepare the
element in response to what the new value will be. A return of %FALSE
means that the property should not be set.</doc>
        <callback name="set_max_duration">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @maxduration could be set for @self.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="maxduration" transfer-ownership="none">
              <doc xml:space="preserve">The maximum duration, in internal time coordinates</doc>
              <type name="Gst.ClockTime" c:type="GstClockTime"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="set_priority">
        <doc xml:space="preserve">Method called just before the
#GESTimelineElement:priority is set.</doc>
        <callback name="set_priority">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @priority could be set for @self.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="priority" transfer-ownership="none">
              <doc xml:space="preserve">The priority</doc>
              <type name="guint32" c:type="guint32"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="ripple">
        <doc xml:space="preserve">Set this method to overwrite a redirect to
ges_timeline_element_edit() in ges_timeline_element_ripple().</doc>
        <callback name="ripple">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if the ripple edit of @self completed, %FALSE on
failure.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The #GESTimelineElement to ripple</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="start" transfer-ownership="none">
              <doc xml:space="preserve">The new start time of @self in ripple mode</doc>
              <type name="guint64" c:type="guint64"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="ripple_end">
        <doc xml:space="preserve">Set this method to overwrite a redirect to
ges_timeline_element_edit() in ges_timeline_element_ripple_end().</doc>
        <callback name="ripple_end">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if the ripple edit of @self completed, %FALSE on
failure.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The #GESTimelineElement to ripple</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="end" transfer-ownership="none">
              <doc xml:space="preserve">The new end time of @self in ripple mode</doc>
              <type name="guint64" c:type="guint64"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="roll_start">
        <callback name="roll_start">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if the roll edit of @self completed, %FALSE on failure.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The #GESTimelineElement to roll</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="start" transfer-ownership="none">
              <doc xml:space="preserve">The new start time of @self in roll mode</doc>
              <type name="guint64" c:type="guint64"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="roll_end">
        <doc xml:space="preserve">Set this method to overwrite a redirect to
ges_timeline_element_edit() in ges_timeline_element_roll_end().</doc>
        <callback name="roll_end">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if the roll edit of @self completed, %FALSE on failure.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The #GESTimelineElement to roll</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="end" transfer-ownership="none">
              <doc xml:space="preserve">The new end time of @self in roll mode</doc>
              <type name="guint64" c:type="guint64"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="trim">
        <doc xml:space="preserve">Set this method to overwrite a redirect to
ges_timeline_element_edit() in ges_timeline_element_trim().</doc>
        <callback name="trim">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if the trim edit of @self completed, %FALSE on failure.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The #GESTimelineElement to trim</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="start" transfer-ownership="none">
              <doc xml:space="preserve">The new start time of @self in trim mode</doc>
              <type name="guint64" c:type="guint64"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="deep_copy">
        <doc xml:space="preserve">Prepare @copy for pasting as a copy of @self. At least by
copying the children properties of @self into @copy.</doc>
        <callback name="deep_copy">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="copy" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="paste" introspectable="0">
        <doc xml:space="preserve">Paste @self, which is the @copy prepared by @deep_copy, into
the timeline at the given @paste_position, with @ref_element as a
reference, which is the @self that was passed to @deep_copy.</doc>
        <callback name="paste" introspectable="0">
          <return-value>
            <type name="TimelineElement" c:type="GESTimelineElement*"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="ref_element" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="paste_position" transfer-ownership="none">
              <type name="Gst.ClockTime" c:type="GstClockTime"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="list_children_properties" introspectable="0">
        <doc xml:space="preserve">List the children properties that have been
registered for the element. The default implementation is able to fetch
all of these, so should be sufficient. If you overwrite this, you
should still call the default implementation to get the full list, and
then edit its content.</doc>
        <callback name="list_children_properties" introspectable="0">
          <return-value>
            <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="n_properties" transfer-ownership="none">
              <type name="guint" c:type="guint*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="lookup_child">
        <doc xml:space="preserve">Find @child, and its registered child property @pspec,
corresponding to the child property specified by @prop_name. The
default implementation will search for the first child that matches. If
you overwrite this, you will likely still want to call the default
vmethod, which has access to the registered parameter specifications.</doc>
        <callback name="lookup_child">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if a child corresponding to the property was found, in
which case @child and @pspec are set.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="prop_name" transfer-ownership="none">
              <doc xml:space="preserve">The name of a child property</doc>
              <type name="utf8" c:type="const gchar*"/>
            </parameter>
            <parameter name="child" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
              <doc xml:space="preserve">The return location for the
found child</doc>
              <type name="GObject.Object" c:type="GObject**"/>
            </parameter>
            <parameter name="pspec" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
              <doc xml:space="preserve">The return location for the
specification of the child property</doc>
              <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="get_track_types">
        <doc xml:space="preserve">Return a the track types for the element.</doc>
        <callback name="get_track_types">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">The track types that @self supports.</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="set_child_property">
        <callback name="set_child_property">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="child" transfer-ownership="none">
              <type name="GObject.Object" c:type="GObject*"/>
            </parameter>
            <parameter name="pspec" transfer-ownership="none">
              <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
            </parameter>
            <parameter name="value" transfer-ownership="none">
              <type name="GObject.Value" c:type="GValue*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="get_layer_priority">
        <callback name="get_layer_priority">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">The priority of the layer @self is in, or
#GES_TIMELINE_ELEMENT_NO_LAYER_PRIORITY if @self does not exist in a
layer.</doc>
            <type name="guint32" c:type="guint32"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTimelineElement</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="get_natural_framerate">
        <callback name="get_natural_framerate">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">Whether @self has a natural framerate or not, @framerate_n
and @framerate_d will be set to, respectively, 0 and -1 if it is
not the case.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">The #GESTimelineElement to get "natural" framerate from</doc>
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
              <doc xml:space="preserve">The framerate numerator</doc>
              <type name="gint" c:type="gint*"/>
            </parameter>
            <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
              <doc xml:space="preserve">The framerate denominator</doc>
              <type name="gint" c:type="gint*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="set_child_property_full">
        <callback name="set_child_property_full" throws="1">
          <return-value transfer-ownership="none">
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <type name="TimelineElement" c:type="GESTimelineElement*"/>
            </parameter>
            <parameter name="child" transfer-ownership="none">
              <type name="GObject.Object" c:type="GObject*"/>
            </parameter>
            <parameter name="pspec" transfer-ownership="none">
              <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
            </parameter>
            <parameter name="value" transfer-ownership="none">
              <type name="GObject.Value" c:type="const GValue*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="14">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="TimelineElementPrivate" c:type="GESTimelineElementPrivate" disguised="1" opaque="1"/>
    <record name="TimelinePrivate" c:type="GESTimelinePrivate" disguised="1" opaque="1"/>
    <class name="TitleClip" c:symbol-prefix="title_clip" c:type="GESTitleClip" parent="SourceClip" glib:type-name="GESTitleClip" glib:get-type="ges_title_clip_get_type" glib:type-struct="TitleClipClass">
      <doc xml:space="preserve">Renders the given text in the specified font, at specified position, and
with the specified background pattern.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_title_clip_new">
        <doc xml:space="preserve">Creates a new #GESTitleClip</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created #GESTitleClip,
or %NULL if there was an error.</doc>
          <type name="TitleClip" c:type="GESTitleClip*"/>
        </return-value>
      </constructor>
      <method name="get_background_color" c:identifier="ges_title_clip_get_background_color" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Get the background used by @self.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The color used by @self.</doc>
          <type name="guint32" c:type="const guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleClip</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_font_desc" c:identifier="ges_title_clip_get_font_desc" glib:get-property="font-desc" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Get the pango font description used by @self.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The pango font description used by @self.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleClip</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_halignment" c:identifier="ges_title_clip_get_halignment" glib:get-property="halignment" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Get the horizontal aligment used by @self.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The horizontal aligment used by @self.</doc>
          <type name="TextHAlign" c:type="GESTextHAlign"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleClip</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_text" c:identifier="ges_title_clip_get_text" glib:get-property="text" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Get the text currently set on @self.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The text currently set on @self.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleClip</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_text_color" c:identifier="ges_title_clip_get_text_color" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Get the color used by @self.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The color used by @self.</doc>
          <type name="guint32" c:type="const guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleClip</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_valignment" c:identifier="ges_title_clip_get_valignment" glib:get-property="valignment" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Get the vertical aligment used by @self.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The vertical aligment used by @self.</doc>
          <type name="TextVAlign" c:type="GESTextVAlign"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleClip</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_xpos" c:identifier="ges_title_clip_get_xpos" glib:get-property="xpos" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Get the horizontal position used by @self.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The horizontal position used by @self.</doc>
          <type name="gdouble" c:type="const gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleClip</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_ypos" c:identifier="ges_title_clip_get_ypos" glib:get-property="ypos" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Get the vertical position used by @self.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_get_children_property instead</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The vertical position used by @self.</doc>
          <type name="gdouble" c:type="const gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleClip</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_background" c:identifier="ges_title_clip_set_background" glib:set-property="background" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Sets the background of the text.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleClip* to set</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
          <parameter name="background" transfer-ownership="none">
            <doc xml:space="preserve">The color @self is being set to</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_color" c:identifier="ges_title_clip_set_color" glib:set-property="color" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Sets the color of the text.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleClip* to set</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
          <parameter name="color" transfer-ownership="none">
            <doc xml:space="preserve">The color @self is being set to</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_font_desc" c:identifier="ges_title_clip_set_font_desc" glib:set-property="font-desc" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Sets the pango font description of the text.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleClip*</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
          <parameter name="font_desc" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">the pango font description</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_halignment" c:identifier="ges_title_clip_set_halignment" glib:set-property="halignment" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Sets the horizontal aligment of the text.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleClip* to set horizontal alignement of text on</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
          <parameter name="halign" transfer-ownership="none">
            <doc xml:space="preserve">#GESTextHAlign</doc>
            <type name="TextHAlign" c:type="GESTextHAlign"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_text" c:identifier="ges_title_clip_set_text" glib:set-property="text" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Sets the text this clip will render.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleClip* to set text on</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
          <parameter name="text" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">the text to render. an internal copy of this text will be
made.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_valignment" c:identifier="ges_title_clip_set_valignment" glib:set-property="valignment" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Sets the vertical aligment of the text.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleClip* to set vertical alignement of text on</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
          <parameter name="valign" transfer-ownership="none">
            <doc xml:space="preserve">#GESTextVAlign</doc>
            <type name="TextVAlign" c:type="GESTextVAlign"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_xpos" c:identifier="ges_title_clip_set_xpos" glib:set-property="xpos" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Sets the horizontal position of the text.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleClip* to set</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The horizontal position @self is being set to</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_ypos" c:identifier="ges_title_clip_set_ypos" glib:set-property="ypos" deprecated="1" deprecated-version="1.6">
        <doc xml:space="preserve">Sets the vertical position of the text.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleClip* to set</doc>
            <type name="TitleClip" c:type="GESTitleClip*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The vertical position @self is being set to</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <property name="background" deprecated="1" deprecated-version="1.6" writable="1" construct="1" transfer-ownership="none" setter="set_background" default-value="4294967295">
        <doc xml:space="preserve">The background of the text</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties or
#ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <type name="guint" c:type="guint"/>
      </property>
      <property name="color" deprecated="1" deprecated-version="1.6" writable="1" construct="1" transfer-ownership="none" setter="set_color" default-value="4294967295">
        <doc xml:space="preserve">The color of the text</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties or
#ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <type name="guint" c:type="guint"/>
      </property>
      <property name="font-desc" deprecated="1" deprecated-version="1.6" writable="1" construct="1" transfer-ownership="none" setter="set_font_desc" getter="get_font_desc" default-value="Serif 36">
        <doc xml:space="preserve">Pango font description string</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties or
#ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <property name="halignment" deprecated="1" deprecated-version="1.6" writable="1" construct="1" transfer-ownership="none" setter="set_halignment" getter="get_halignment" default-value="GES_TEXT_HALIGN_CENTER">
        <doc xml:space="preserve">Horizontal alignment of the text</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties or
#ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <type name="TextHAlign"/>
      </property>
      <property name="text" deprecated="1" deprecated-version="1.6" writable="1" construct="1" transfer-ownership="none" setter="set_text" getter="get_text">
        <doc xml:space="preserve">The text to diplay</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties or
#ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <property name="valignment" deprecated="1" deprecated-version="1.6" writable="1" construct="1" transfer-ownership="none" setter="set_valignment" getter="get_valignment" default-value="GES_TEXT_VALIGN_BASELINE">
        <doc xml:space="preserve">Vertical alignent of the text</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties or
#ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <type name="TextVAlign"/>
      </property>
      <property name="xpos" deprecated="1" deprecated-version="1.6" writable="1" construct="1" transfer-ownership="none" setter="set_xpos" getter="get_xpos" default-value="0.500000">
        <doc xml:space="preserve">The horizontal position of the text</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties or
#ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <type name="gdouble" c:type="gdouble"/>
      </property>
      <property name="ypos" deprecated="1" deprecated-version="1.6" writable="1" construct="1" transfer-ownership="none" setter="set_ypos" getter="get_ypos" default-value="0.500000">
        <doc xml:space="preserve">The vertical position of the text</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_children_properties or
#ges_timeline_element_get_children_properties instead.
See #GESTitleSource for more information about exposed properties</doc-deprecated>
        <type name="gdouble" c:type="gdouble"/>
      </property>
      <field name="parent">
        <type name="SourceClip" c:type="GESSourceClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TitleClipPrivate" c:type="GESTitleClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="TitleClipClass" c:type="GESTitleClipClass" glib:is-gtype-struct-for="TitleClip">
      <field name="parent_class" readable="0" private="1">
        <type name="SourceClipClass" c:type="GESSourceClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="TitleClipPrivate" c:type="GESTitleClipPrivate" disguised="1" opaque="1"/>
    <class name="TitleSource" c:symbol-prefix="title_source" c:type="GESTitleSource" parent="VideoSource" glib:type-name="GESTitleSource" glib:get-type="ges_title_source_get_type" glib:type-struct="TitleSourceClass">
      <doc xml:space="preserve">#GESTitleSource is a GESTimelineElement that implements the notion
of titles in GES.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <method name="get_background_color" c:identifier="ges_title_source_get_background_color">
        <doc xml:space="preserve">Get the background used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The background used by @source.</doc>
          <type name="guint32" c:type="const guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_font_desc" c:identifier="ges_title_source_get_font_desc" deprecated="1" deprecated-version="1.16">
        <doc xml:space="preserve">Get the pango font description used by @source.</doc>
        <doc-deprecated xml:space="preserve">Use ges_timeline_element_get_child_property instead
(this actually returns a newly allocated string)</doc-deprecated>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The pango font description used by this
@source.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_halignment" c:identifier="ges_title_source_get_halignment">
        <doc xml:space="preserve">Get the horizontal aligment used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The horizontal aligment used by @source.</doc>
          <type name="TextHAlign" c:type="GESTextHAlign"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_text" c:identifier="ges_title_source_get_text" deprecated="1" deprecated-version="1.16">
        <doc xml:space="preserve">Get the text currently set on the @source.</doc>
        <doc-deprecated xml:space="preserve">Use ges_timeline_element_get_child_property instead
(this actually returns a newly allocated string)</doc-deprecated>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The text currently set on the @source.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_text_color" c:identifier="ges_title_source_get_text_color">
        <doc xml:space="preserve">Get the color used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The color used by @source.</doc>
          <type name="guint32" c:type="const guint32"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_valignment" c:identifier="ges_title_source_get_valignment">
        <doc xml:space="preserve">Get the vertical aligment used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The vertical aligment used by @source.</doc>
          <type name="TextVAlign" c:type="GESTextVAlign"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_xpos" c:identifier="ges_title_source_get_xpos">
        <doc xml:space="preserve">Get the horizontal position used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The horizontal position used by @source.</doc>
          <type name="gdouble" c:type="const gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_ypos" c:identifier="ges_title_source_get_ypos">
        <doc xml:space="preserve">Get the vertical position used by @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The vertical position used by @source.</doc>
          <type name="gdouble" c:type="const gdouble"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_background_color" c:identifier="ges_title_source_set_background_color">
        <doc xml:space="preserve">Sets the color of the background</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleSource* to set</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
          <parameter name="color" transfer-ownership="none">
            <doc xml:space="preserve">the color @self is being set to</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_font_desc" c:identifier="ges_title_source_set_font_desc">
        <doc xml:space="preserve">Set the pango font description this source will use to render
the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleSource</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
          <parameter name="font_desc" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">the pango font description</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_halignment" c:identifier="ges_title_source_set_halignment">
        <doc xml:space="preserve">Sets the vertical aligment of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleSource* to set text on</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
          <parameter name="halign" transfer-ownership="none">
            <doc xml:space="preserve">#GESTextHAlign</doc>
            <type name="TextHAlign" c:type="GESTextHAlign"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_text" c:identifier="ges_title_source_set_text" deprecated="1">
        <doc xml:space="preserve">Sets the text this track element will render.</doc>
        <doc-deprecated xml:space="preserve">use ges_track_element_get/set_children_properties on the
GESTrackElement instead</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleSource* to set text on</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
          <parameter name="text" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">the text to render. an internal copy of this text will be
made.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_text_color" c:identifier="ges_title_source_set_text_color">
        <doc xml:space="preserve">Sets the color of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleSource* to set</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
          <parameter name="color" transfer-ownership="none">
            <doc xml:space="preserve">the color @self is being set to</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_valignment" c:identifier="ges_title_source_set_valignment">
        <doc xml:space="preserve">Sets the vertical aligment of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleSource* to set text on</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
          <parameter name="valign" transfer-ownership="none">
            <doc xml:space="preserve">#GESTextVAlign</doc>
            <type name="TextVAlign" c:type="GESTextVAlign"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_xpos" c:identifier="ges_title_source_set_xpos">
        <doc xml:space="preserve">Sets the horizontal position of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleSource* to set</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">the horizontal position @self is being set to</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_ypos" c:identifier="ges_title_source_set_ypos">
        <doc xml:space="preserve">Sets the vertical position of the text.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESTitleSource* to set</doc>
            <type name="TitleSource" c:type="GESTitleSource*"/>
          </instance-parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">the color @self is being set to</doc>
            <type name="gdouble" c:type="gdouble"/>
          </parameter>
        </parameters>
      </method>
      <field name="parent">
        <type name="VideoSource" c:type="GESVideoSource"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TitleSourcePrivate" c:type="GESTitleSourcePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="TitleSourceClass" c:type="GESTitleSourceClass" glib:is-gtype-struct-for="TitleSource">
      <field name="parent_class">
        <doc xml:space="preserve">parent class</doc>
        <type name="VideoSourceClass" c:type="GESVideoSourceClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="3">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="TitleSourcePrivate" c:type="GESTitleSourcePrivate" disguised="1" opaque="1"/>
    <class name="Track" c:symbol-prefix="track" c:type="GESTrack" parent="Gst.Bin" glib:type-name="GESTrack" glib:get-type="ges_track_get_type" glib:type-struct="TrackClass">
      <doc xml:space="preserve">A #GESTrack acts an output source for a #GESTimeline. Each one
essentially provides an additional #GstPad for the timeline, with
#GESTrack:restriction-caps capabilities. Internally, a track
wraps an #nlecomposition filtered by a #capsfilter.

A track will contain a number of #GESTrackElement-s, and its role is
to select and activate these elements according to their timings when
the timeline in played. For example, a track would activate a
#GESSource when its #GESTimelineElement:start is reached by outputting
its data for its #GESTimelineElement:duration. Similarly, a
#GESOperation would be activated by applying its effect to the source
data, starting from its #GESTimelineElement:start time and lasting for
its #GESTimelineElement:duration.

For most users, it will usually be sufficient to add newly created
tracks to a timeline, but never directly add an element to a track.
Whenever a #GESClip is added to a timeline, the clip adds its
elements to the timeline's tracks and assumes responsibility for
updating them.</doc>
      <implements name="MetaContainer"/>
      <implements name="Gst.ChildProxy"/>
      <constructor name="new" c:identifier="ges_track_new">
        <doc xml:space="preserve">Creates a new track with the given track-type and caps.

If @type is #GES_TRACK_TYPE_VIDEO, and @caps is a subset of
"video/x-raw(ANY)", then a #GESVideoTrack is created. This will
automatically choose a gap creation method suitable for video data. You
will likely want to set #GESTrack:restriction-caps separately. You may
prefer to use the ges_video_track_new() method instead.

If @type is #GES_TRACK_TYPE_AUDIO, and @caps is a subset of
"audio/x-raw(ANY)", then a #GESAudioTrack is created. This will
automatically choose a gap creation method suitable for audio data, and
will set the #GESTrack:restriction-caps to the default for
#GESAudioTrack. You may prefer to use the ges_audio_track_new() method
instead.

Otherwise, a plain #GESTrack is returned. You will likely want to set
the #GESTrack:restriction-caps and call
ges_track_set_create_element_for_gap_func() on the returned track.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">A new track.</doc>
          <type name="Track" c:type="GESTrack*"/>
        </return-value>
        <parameters>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrack:track-type for the track</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
          <parameter name="caps" transfer-ownership="full">
            <doc xml:space="preserve">The #GESTrack:caps for the track</doc>
            <type name="Gst.Caps" c:type="GstCaps*"/>
          </parameter>
        </parameters>
      </constructor>
      <virtual-method name="get_mixing_element" introspectable="0">
        <return-value>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <method name="add_element" c:identifier="ges_track_add_element">
        <doc xml:space="preserve">See ges_track_add_element(), which also gives an error.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @object was successfully added to @track.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The element to add</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="add_element_full" c:identifier="ges_track_add_element_full" version="1.18" throws="1">
        <doc xml:space="preserve">Adds the given track element to the track, which takes ownership of the
element.

Note that this can fail if it would break a configuration rule of the
track's #GESTimeline.

Note that a #GESTrackElement can only be added to one track.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @object was successfully added to @track.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The element to add</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="commit" c:identifier="ges_track_commit">
        <doc xml:space="preserve">Commits all the pending changes for the elements contained in the
track.

When changes are made to the timing or priority of elements within a
track, they are not directly executed for the underlying
#nlecomposition and its children. This method will finally execute
these changes so they are reflected in the data output of the track.

Any pending changes will be executed in the backend. The
#GESTimeline::commited signal will be emitted once this has completed.

Note that ges_timeline_commit() will call this method on all of its
tracks, so you are unlikely to need to use this directly.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if pending changes were committed, or %FALSE if nothing
needed to be committed.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_caps" c:identifier="ges_track_get_caps" glib:get-property="caps">
        <doc xml:space="preserve">Get the #GESTrack:caps of the track.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The caps of @track.</doc>
          <type name="Gst.Caps" c:type="const GstCaps*"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_elements" c:identifier="ges_track_get_elements">
        <doc xml:space="preserve">Gets the track elements contained in the track. The returned list is
sorted by the element's #GESTimelineElement:priority and
#GESTimelineElement:start.</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A list of
all the #GESTrackElement-s in @track.</doc>
          <type name="GLib.List" c:type="GList*">
            <type name="TrackElement"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_mixing" c:identifier="ges_track_get_mixing" glib:get-property="mixing">
        <doc xml:space="preserve">Gets the #GESTrack:mixing of the track.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">Whether @track is mixing.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_restriction_caps" c:identifier="ges_track_get_restriction_caps" glib:get-property="restriction-caps" version="1.18">
        <doc xml:space="preserve">Gets the #GESTrack:restriction-caps of the track.</doc>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve">The restriction-caps of @track.</doc>
          <type name="Gst.Caps" c:type="GstCaps*"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_timeline" c:identifier="ges_track_get_timeline">
        <doc xml:space="preserve">Get the timeline this track belongs to.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The timeline that @track belongs to, or %NULL if
it does not belong to a timeline.</doc>
          <type name="Timeline" c:type="const GESTimeline*"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="remove_element" c:identifier="ges_track_remove_element">
        <doc xml:space="preserve">See ges_track_remove_element_full(), which also returns an error.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @object was successfully removed from @track.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The element to remove</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove_element_full" c:identifier="ges_track_remove_element_full" version="1.18" throws="1">
        <doc xml:space="preserve">Removes the given track element from the track, which revokes
ownership of the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @object was successfully removed from @track.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The element to remove</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_create_element_for_gap_func" c:identifier="ges_track_set_create_element_for_gap_func" introspectable="0">
        <doc xml:space="preserve">Sets the function that will be used to create a #GstElement that can be
used as a source to fill the gaps of the track. A gap is a timeline
region where the track has no #GESTrackElement sources. Therefore, you
are likely to want the #GstElement returned by the function to always
produce 'empty' content, defined relative to the stream type, such as
transparent frames for a video, or mute samples for audio.

#GESAudioTrack and #GESVideoTrack objects are created with such a
function already set appropriately.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="func" transfer-ownership="none" scope="notified">
            <doc xml:space="preserve">The function to be used to create a source
#GstElement that can fill gaps in @track</doc>
            <type name="CreateElementForGapFunc" c:type="GESCreateElementForGapFunc"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_mixing" c:identifier="ges_track_set_mixing" glib:set-property="mixing">
        <doc xml:space="preserve">Sets the #GESTrack:mixing for the track.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="mixing" transfer-ownership="none">
            <doc xml:space="preserve">Whether @track should be mixing</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_restriction_caps" c:identifier="ges_track_set_restriction_caps" glib:set-property="restriction-caps">
        <doc xml:space="preserve">Sets the #GESTrack:restriction-caps for the track.

&gt; **NOTE**: Restriction caps are **not** taken into account when
&gt; using #GESPipeline:mode=#GES_PIPELINE_MODE_SMART_RENDER.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="caps" transfer-ownership="none">
            <doc xml:space="preserve">The new restriction-caps for @track</doc>
            <type name="Gst.Caps" c:type="const GstCaps*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_timeline" c:identifier="ges_track_set_timeline">
        <doc xml:space="preserve">Informs the track that it belongs to the given timeline. Calling this
does not actually add the track to the timeline. For that, you should
use ges_timeline_add_track(), which will also take care of informing
the track that it belongs to the timeline. As such, there is no need
for you to call this method.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack
@timeline (nullable): A #GESTimeline</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="timeline" transfer-ownership="none">
            <type name="Timeline" c:type="GESTimeline*"/>
          </parameter>
        </parameters>
      </method>
      <method name="update_restriction_caps" c:identifier="ges_track_update_restriction_caps">
        <doc xml:space="preserve">Updates the #GESTrack:restriction-caps of the track using the fields
found in the given caps. Each of the #GstStructure-s in @caps is
compared against the existing structure with the same index in the
current #GESTrack:restriction-caps. If there is no corresponding
existing structure at that index, then the new structure is simply
copied to that index. Otherwise, any fields in the new structure are
copied into the existing structure. This will replace existing values,
and may introduce new ones, but any fields 'missing' in the new
structure are left unchanged in the existing structure.

For example, if the existing #GESTrack:restriction-caps are
"video/x-raw, width=480, height=360", and the updating caps is
"video/x-raw, format=I420, width=500; video/x-bayer, width=400", then
the new #GESTrack:restriction-caps after calling this will be
"video/x-raw, width=500, height=360, format=I420; video/x-bayer,
width=400".</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="track" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrack</doc>
            <type name="Track" c:type="GESTrack*"/>
          </instance-parameter>
          <parameter name="caps" transfer-ownership="none">
            <doc xml:space="preserve">The caps to update the restriction-caps with</doc>
            <type name="Gst.Caps" c:type="const GstCaps*"/>
          </parameter>
        </parameters>
      </method>
      <property name="caps" writable="1" construct-only="1" transfer-ownership="none" getter="get_caps">
        <doc xml:space="preserve">The capabilities used to choose the output of the #GESTrack's
elements. Internally, this is used to select output streams when
several may be available, by determining whether its #GstPad is
compatible (see #NleObject:caps for #nlecomposition). As such,
this is used as a weaker indication of the desired output type of the
track, **before** the #GESTrack:restriction-caps is applied.
Therefore, this should be set to a *generic* superset of the
#GESTrack:restriction-caps, such as "video/x-raw(ANY)". In addition,
it should match with the track's #GESTrack:track-type.

Note that when you set this property, the #GstCapsFeatures of all its
#GstStructure-s will be automatically set to #GST_CAPS_FEATURES_ANY.

Once a track has been added to a #GESTimeline, you should not change
this.

Default value: #GST_CAPS_ANY.</doc>
        <type name="Gst.Caps"/>
      </property>
      <property name="duration" transfer-ownership="none" default-value="1000000000">
        <doc xml:space="preserve">Current duration of the track

Default value: O</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="id" version="1.18" writable="1" transfer-ownership="none" default-value="NULL">
        <doc xml:space="preserve">The #nlecomposition:id of the underlying #nlecomposition.</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <property name="mixing" writable="1" construct="1" transfer-ownership="none" setter="set_mixing" getter="get_mixing" default-value="TRUE">
        <doc xml:space="preserve">Whether the track should support the mixing of #GESLayer data, such
as composing the video data of each layer (when part of the video
data is transparent, the next layer will become visible) or adding
together the audio data. As such, for audio and video tracks, you'll
likely want to keep this set to %TRUE.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="restriction-caps" writable="1" transfer-ownership="none" setter="set_restriction_caps" getter="get_restriction_caps">
        <doc xml:space="preserve">The capabilities that specifies the final output format of the
#GESTrack. For example, for a video track, it would specify the
height, width, framerate and other properties of the stream.

You may change this property after the track has been added to a
#GESTimeline, but it must remain compatible with the track's
#GESTrack:caps.

Default value: #GST_CAPS_ANY.</doc>
        <type name="Gst.Caps"/>
      </property>
      <property name="track-type" writable="1" construct-only="1" transfer-ownership="none" default-value="GES_TRACK_TYPE_CUSTOM">
        <doc xml:space="preserve">The track type of the track. This controls the type of
#GESTrackElement-s that can be added to the track. This should
match with the track's #GESTrack:caps.

Once a track has been added to a #GESTimeline, you should not change
this.</doc>
        <type name="TrackType"/>
      </property>
      <field name="parent">
        <type name="Gst.Bin" c:type="GstBin"/>
      </field>
      <field name="type">
        <doc xml:space="preserve">The #GESTrack:track-type of the track</doc>
        <type name="TrackType" c:type="GESTrackType"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TrackPrivate" c:type="GESTrackPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <glib:signal name="commited" when="last">
        <doc xml:space="preserve">This signal will be emitted once the changes initiated by
ges_track_commit() have been executed in the backend. In particular,
this will be emitted whenever the underlying #nlecomposition has been
committed (see #nlecomposition::commited).</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
      </glib:signal>
      <glib:signal name="track-element-added" when="first">
        <doc xml:space="preserve">Will be emitted after a track element is added to the track.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">The element that was added</doc>
            <type name="TrackElement"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="track-element-removed" when="first">
        <doc xml:space="preserve">Will be emitted after a track element is removed from the track.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="effect" transfer-ownership="none">
            <doc xml:space="preserve">The element that was removed</doc>
            <type name="TrackElement"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <record name="TrackClass" c:type="GESTrackClass" glib:is-gtype-struct-for="Track">
      <field name="parent_class" readable="0" private="1">
        <type name="Gst.BinClass" c:type="GstBinClass"/>
      </field>
      <field name="get_mixing_element" introspectable="0">
        <callback name="get_mixing_element" introspectable="0">
          <return-value>
            <type name="Gst.Element" c:type="GstElement*"/>
          </return-value>
          <parameters>
            <parameter name="track" transfer-ownership="none">
              <type name="Track" c:type="GESTrack*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <class name="TrackElement" c:symbol-prefix="track_element" c:type="GESTrackElement" parent="TimelineElement" abstract="1" glib:type-name="GESTrackElement" glib:get-type="ges_track_element_get_type" glib:type-struct="TrackElementClass">
      <doc xml:space="preserve">A #GESTrackElement is a #GESTimelineElement that specifically belongs
to a single #GESTrack of its #GESTimelineElement:timeline. Its
#GESTimelineElement:start and #GESTimelineElement:duration specify its
temporal extent in the track. Specifically, a track element wraps some
nleobject, such as an #nlesource or #nleoperation, which can be
retrieved with ges_track_element_get_nleobject(), and its
#GESTimelineElement:start, #GESTimelineElement:duration,
#GESTimelineElement:in-point, #GESTimelineElement:priority and
#GESTrackElement:active properties expose the corresponding nleobject
properties. When a track element is added to a track, its nleobject is
added to the corresponding #nlecomposition that the track wraps.

Most users will not have to work directly with track elements since a
#GESClip will automatically create track elements for its timeline's
tracks and take responsibility for updating them. The only track
elements that are not automatically created by clips, but a user is
likely to want to create, are #GESEffect-s.

## Control Bindings for Children Properties

You can set up control bindings for a track element child property
using ges_track_element_set_control_source(). A
#GstTimedValueControlSource should specify the timed values using the
internal source coordinates (see #GESTimelineElement). By default,
these will be updated to lie between the #GESTimelineElement:in-point
and out-point of the element. This can be switched off by setting
#GESTrackElement:auto-clamp-control-sources to %FALSE.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <virtual-method name="active_changed">
        <doc xml:space="preserve">Notify when the #GESTrackElement:active property changes</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="active" transfer-ownership="none">
            <doc xml:space="preserve">Whether the element is active or not inside the #nlecomposition</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="changed">
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="create_element">
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">the #GstElement that the underlying nleobject
controls.</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="create_gnl_object">
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">the #NLEObject to use in the #nlecomposition</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="list_children_properties" introspectable="0" deprecated="1" deprecated-version="1.14">
        <doc xml:space="preserve">Listing children properties is handled by
ges_timeline_element_list_children_properties() instead.</doc>
        <doc-deprecated xml:space="preserve">Use #GESTimelineElementClass::list_children_properties
instead</doc-deprecated>
        <return-value>
          <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="n_properties" transfer-ownership="none">
            <type name="guint" c:type="guint*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <virtual-method name="lookup_child" invoker="lookup_child" deprecated="1" deprecated-version="1.14">
        <doc xml:space="preserve">Looks up which @element and @pspec would be effected by the given @name. If various
contained elements have this property name you will get the first one, unless you
specify the class name in @name.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_lookup_child</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">TRUE if @element and @pspec could be found. FALSE otherwise. In that
case the values for @pspec and @element are not modified. Unref @element after
usage.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">Object to lookup the property in</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="prop_name" transfer-ownership="none">
            <doc xml:space="preserve">Name of the property to look up. You can specify the name of the
    class as such: "ClassName::property-name", to guarantee that you get the
    proper GParamSpec in case various GstElement-s contain the same property
    name. If you don't do so, you will get the first element found, having
    this property and the and the corresponding GParamSpec.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="element" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">pointer to a #GstElement that
    takes the real object to set property on</doc>
            <type name="Gst.Element" c:type="GstElement**"/>
          </parameter>
          <parameter name="pspec" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">pointer to take the specification
    describing the property</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="add_children_props" c:identifier="ges_track_element_add_children_props">
        <doc xml:space="preserve">Adds all the properties of a #GstElement that match the criteria as
children properties of the track element. If the name of @element's
#GstElementFactory is not in @blacklist, and the factory's
#GST_ELEMENT_METADATA_KLASS contains at least one member of
@wanted_categories (e.g. #GST_ELEMENT_FACTORY_KLASS_DECODER), then
all the properties of @element that are also in @whitelist are added as
child properties of @self using
ges_timeline_element_add_child_property().

This is intended to be used by subclasses when constructing.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="element" transfer-ownership="none">
            <doc xml:space="preserve">The child object to retrieve properties from</doc>
            <type name="Gst.Element" c:type="GstElement*"/>
          </parameter>
          <parameter name="wanted_categories" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">
An array of element factory "klass" categories to whitelist, or %NULL
to accept all categories</doc>
            <array c:type="const gchar**">
              <type name="utf8" c:type="gchar*"/>
            </array>
          </parameter>
          <parameter name="blacklist" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A
blacklist of element factory names, or %NULL to not blacklist any
element factory</doc>
            <array c:type="const gchar**">
              <type name="utf8" c:type="gchar*"/>
            </array>
          </parameter>
          <parameter name="whitelist" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A
whitelist of element property names, or %NULL to whitelist all
writeable properties</doc>
            <array c:type="const gchar**">
              <type name="utf8" c:type="gchar*"/>
            </array>
          </parameter>
        </parameters>
      </method>
      <method name="clamp_control_source" c:identifier="ges_track_element_clamp_control_source" version="1.18">
        <doc xml:space="preserve">Clamp the #GstTimedValueControlSource for the specified child property
to lie between the #GESTimelineElement:in-point and out-point of the
element. The out-point is the #GES_TIMELINE_ELEMENT_END of the element
translated from the timeline coordinates to the internal source
coordinates of the element.

If the property does not have a #GstTimedValueControlSource set by
ges_track_element_set_control_source(), nothing happens. Otherwise, if
a timed value for the control source lies before the in-point of the
element, or after its out-point, then it will be removed. At the
in-point and out-point times, a new interpolated value will be placed.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the child property to clamp the control
source of</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="edit" c:identifier="ges_track_element_edit" deprecated="1" deprecated-version="1.18">
        <doc xml:space="preserve">Edits the element within its track.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_edit instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the edit of @object completed, %FALSE on failure.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrackElement to edit</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="layers" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">A whitelist of layers
where the edit can be performed, %NULL allows all layers in the
timeline</doc>
            <type name="GLib.List" c:type="GList*">
              <type name="Layer"/>
            </type>
          </parameter>
          <parameter name="mode" transfer-ownership="none">
            <doc xml:space="preserve">The edit mode</doc>
            <type name="EditMode" c:type="GESEditMode"/>
          </parameter>
          <parameter name="edge" transfer-ownership="none">
            <doc xml:space="preserve">The edge of @object where the edit should occur</doc>
            <type name="Edge" c:type="GESEdge"/>
          </parameter>
          <parameter name="position" transfer-ownership="none">
            <doc xml:space="preserve">The edit position: a new location for the edge of @object
(in nanoseconds)</doc>
            <type name="guint64" c:type="guint64"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_all_control_bindings" c:identifier="ges_track_element_get_all_control_bindings">
        <doc xml:space="preserve">Get all the control bindings that have been created for the children
properties of the track element using
ges_track_element_set_control_source(). The keys used in the returned
hash table are the child property names that were passed to
ges_track_element_set_control_source(), and their values are the
corresponding created #GstControlBinding.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">A
hash table containing all child-property-name/control-binding pairs
for @trackelement.</doc>
          <type name="GLib.HashTable" c:type="GHashTable*">
            <type name="utf8"/>
            <type name="Gst.ControlBinding"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="trackelement" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_auto_clamp_control_sources" c:identifier="ges_track_element_get_auto_clamp_control_sources" glib:get-property="auto-clamp-control-sources" version="1.18">
        <doc xml:space="preserve">Gets #GESTrackElement:auto-clamp-control-sources.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">Whether the control sources for the child properties of
@object are automatically clamped.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_child_properties" c:identifier="ges_track_element_get_child_properties" introspectable="0" deprecated="1">
        <doc xml:space="preserve">Gets properties of a child of @object.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_get_child_properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The origin #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="first_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the first property to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="..." transfer-ownership="none">
            <doc xml:space="preserve">return location for the first property, followed optionally by more
name/return location pairs, followed by NULL</doc>
            <varargs/>
          </parameter>
        </parameters>
      </method>
      <method name="get_child_property" c:identifier="ges_track_element_get_child_property" introspectable="0" deprecated="1">
        <doc xml:space="preserve">In general, a copy is made of the property contents and
the caller is responsible for freeing the memory by calling
g_value_unset().

Gets a property of a GstElement contained in @object.

Note that #ges_track_element_get_child_property is really
intended for language bindings, #ges_track_element_get_child_properties
is much more convenient for C programming.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_get_child_property</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the property was found, %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The origin #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the property</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" direction="out" caller-allocates="1" transfer-ownership="none">
            <doc xml:space="preserve">return location for the property value, it will
be initialized if it is initialized with 0</doc>
            <type name="GObject.Value" c:type="GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_child_property_by_pspec" c:identifier="ges_track_element_get_child_property_by_pspec" introspectable="0" deprecated="1">
        <doc xml:space="preserve">Gets a property of a child of @object.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_get_child_property_by_pspec</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="pspec" transfer-ownership="none">
            <doc xml:space="preserve">The #GParamSpec that specifies the property you want to get</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </parameter>
          <parameter name="value" direction="out" caller-allocates="1" transfer-ownership="none">
            <doc xml:space="preserve">return location for the value</doc>
            <type name="GObject.Value" c:type="GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_child_property_valist" c:identifier="ges_track_element_get_child_property_valist" introspectable="0" deprecated="1">
        <doc xml:space="preserve">Gets a property of a child of @object. If there are various child elements
that have the same property name, you can distinguish them using the following
syntax: 'ClasseName::property_name' as property name. If you don't, the
corresponding property of the first element found will be set.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_get_child_property_valist</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrackElement parent object</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="first_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the first property to get</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="var_args" transfer-ownership="none">
            <doc xml:space="preserve">Value for the first property, followed optionally by more
name/return location pairs, followed by NULL</doc>
            <type name="va_list" c:type="va_list"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_control_binding" c:identifier="ges_track_element_get_control_binding">
        <doc xml:space="preserve">Gets the control binding that was created for the specified child
property of the track element using
ges_track_element_set_control_source(). The given @property_name must
be the same name of the child property that was passed to
ges_track_element_set_control_source().</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The control binding that was
created for the specified child property of @object, or %NULL if
@property_name does not correspond to any control binding.</doc>
          <type name="Gst.ControlBinding" c:type="GstControlBinding*"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the child property to return the control
binding of</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_element" c:identifier="ges_track_element_get_element">
        <doc xml:space="preserve">Get the #GstElement that the track element's underlying nleobject
controls.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The #GstElement being controlled by the
nleobject that @object wraps.</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_gnlobject" c:identifier="ges_track_element_get_gnlobject" deprecated="1">
        <doc xml:space="preserve">Get the GNonLin object this object is controlling.</doc>
        <doc-deprecated xml:space="preserve">use #ges_track_element_get_nleobject instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The GNonLin object this object is controlling.</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_nleobject" c:identifier="ges_track_element_get_nleobject" version="1.6">
        <doc xml:space="preserve">Get the nleobject that this element wraps.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The nleobject that @object wraps.</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_track" c:identifier="ges_track_element_get_track" glib:get-property="track">
        <doc xml:space="preserve">Get the #GESTrackElement:track for the element.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The track that @object belongs to,
or %NULL if it does not belong to a track.</doc>
          <type name="Track" c:type="GESTrack*"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_track_type" c:identifier="ges_track_element_get_track_type" glib:get-property="track-type">
        <doc xml:space="preserve">Gets the #GESTrackElement:track-type for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The track-type of @object.</doc>
          <type name="TrackType" c:type="GESTrackType"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="has_internal_source" c:identifier="ges_track_element_has_internal_source" version="1.18">
        <doc xml:space="preserve">Gets #GESTrackElement:has-internal-source for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @object can have its 'internal time' properties set.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_active" c:identifier="ges_track_element_is_active">
        <doc xml:space="preserve">Gets #GESTrackElement:active for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @object is active in its track.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_core" c:identifier="ges_track_element_is_core" version="1.18">
        <doc xml:space="preserve">Get whether the given track element is a core track element. That is,
it was created by the @create_track_elements #GESClipClass method for
some #GESClip.

Note that such a track element can only be added to a clip that shares
the same #GESAsset as the clip that created it. For example, you are
allowed to move core children between clips that resulted from
ges_container_ungroup(), but you could not move the core child from a
#GESUriClip to a #GESTitleClip or another #GESUriClip with a different
#GESUriClip:uri.

Moreover, if a core track element is added to a clip, it will always be
added as a core child. Therefore, if this returns %TRUE, then @element
will be a core child of its parent clip.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @element is a core track element.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="list_children_properties" c:identifier="ges_track_element_list_children_properties" deprecated="1">
        <doc xml:space="preserve">Gets an array of #GParamSpec* for all configurable properties of the
children of @object.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_list_children_properties</doc-deprecated>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">An array of #GParamSpec* which should be freed after use or
%NULL if something went wrong.</doc>
          <array length="0" zero-terminated="0" c:type="GParamSpec**">
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </array>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrackElement to get the list of children properties from</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="n_properties" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">return location for the length of the returned array</doc>
            <type name="guint" c:type="guint*"/>
          </parameter>
        </parameters>
      </method>
      <method name="lookup_child" c:identifier="ges_track_element_lookup_child" deprecated="1">
        <doc xml:space="preserve">Looks up which @element and @pspec would be effected by the given @name. If various
contained elements have this property name you will get the first one, unless you
specify the class name in @name.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_lookup_child</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">TRUE if @element and @pspec could be found. FALSE otherwise. In that
case the values for @pspec and @element are not modified. Unref @element after
usage.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">Object to lookup the property in</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="prop_name" transfer-ownership="none">
            <doc xml:space="preserve">Name of the property to look up. You can specify the name of the
    class as such: "ClassName::property-name", to guarantee that you get the
    proper GParamSpec in case various GstElement-s contain the same property
    name. If you don't do so, you will get the first element found, having
    this property and the and the corresponding GParamSpec.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="element" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">pointer to a #GstElement that
    takes the real object to set property on</doc>
            <type name="Gst.Element" c:type="GstElement**"/>
          </parameter>
          <parameter name="pspec" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
            <doc xml:space="preserve">pointer to take the specification
    describing the property</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
          </parameter>
        </parameters>
      </method>
      <method name="remove_control_binding" c:identifier="ges_track_element_remove_control_binding">
        <doc xml:space="preserve">Removes the #GstControlBinding that was created for the specified child
property of the track element using
ges_track_element_set_control_source(). The given @property_name must
be the same name of the child property that was passed to
ges_track_element_set_control_source().</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the control binding was removed from the specified
child property of @object, or %FALSE if an error occurred.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the child property to remove the control
binding from</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_active" c:identifier="ges_track_element_set_active" glib:set-property="active">
        <doc xml:space="preserve">Sets #GESTrackElement:active for the element.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the property was *toggled*.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="active" transfer-ownership="none">
            <doc xml:space="preserve">Whether @object should be active in its track</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_auto_clamp_control_sources" c:identifier="ges_track_element_set_auto_clamp_control_sources" glib:set-property="auto-clamp-control-sources" version="1.18">
        <doc xml:space="preserve">Sets #GESTrackElement:auto-clamp-control-sources. If set to %TRUE, this
will immediately clamp all the control sources.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="auto_clamp" transfer-ownership="none">
            <doc xml:space="preserve">Whether to automatically clamp the control sources for the
child properties of @object</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_properties" c:identifier="ges_track_element_set_child_properties" introspectable="0" deprecated="1">
        <doc xml:space="preserve">Sets a property of a child of @object. If there are various child elements
that have the same property name, you can distinguish them using the following
syntax: 'ClasseName::property_name' as property name. If you don't, the
corresponding property of the first element found will be set.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_set_child_properties</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrackElement parent object</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="first_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the first property to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="..." transfer-ownership="none">
            <doc xml:space="preserve">value for the first property, followed optionally by more
name/return location pairs, followed by NULL</doc>
            <varargs/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_property" c:identifier="ges_track_element_set_child_property" introspectable="0" deprecated="1">
        <doc xml:space="preserve">Sets a property of a GstElement contained in @object.

Note that #ges_track_element_set_child_property is really
intended for language bindings, #ges_track_element_set_child_properties
is much more convenient for C programming.</doc>
        <doc-deprecated xml:space="preserve">use #ges_timeline_element_set_child_property instead</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the property was set, %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The origin #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the property</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value</doc>
            <type name="GObject.Value" c:type="GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_property_by_pspec" c:identifier="ges_track_element_set_child_property_by_pspec" introspectable="0" deprecated="1">
        <doc xml:space="preserve">Sets a property of a child of @object.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_set_child_property_by_spec</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="pspec" transfer-ownership="none">
            <doc xml:space="preserve">The #GParamSpec that specifies the property you want to set</doc>
            <type name="GObject.ParamSpec" c:type="GParamSpec*"/>
          </parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value</doc>
            <type name="GObject.Value" c:type="GValue*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_child_property_valist" c:identifier="ges_track_element_set_child_property_valist" introspectable="0" deprecated="1">
        <doc xml:space="preserve">Sets a property of a child of @object. If there are various child elements
that have the same property name, you can distinguish them using the following
syntax: 'ClasseName::property_name' as property name. If you don't, the
corresponding property of the first element found will be set.</doc>
        <doc-deprecated xml:space="preserve">Use #ges_timeline_element_set_child_property_valist</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">The #GESTrackElement parent object</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="first_property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the first property to set</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="var_args" transfer-ownership="none">
            <doc xml:space="preserve">Value for the first property, followed optionally by more
name/return location pairs, followed by NULL</doc>
            <type name="va_list" c:type="va_list"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_control_source" c:identifier="ges_track_element_set_control_source">
        <doc xml:space="preserve">Creates a #GstControlBinding for the specified child property of the
track element using the given control source. The given @property_name
should refer to an existing child property of the track element, as
used in ges_timeline_element_lookup_child().

If @binding_type is "direct", then the control binding is created with
gst_direct_control_binding_new() using the given control source. If
@binding_type is "direct-absolute", it is created with
gst_direct_control_binding_new_absolute() instead.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the specified child property could be bound to
@source, or %FALSE if an error occurred.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">The control source to bind the child property to</doc>
            <type name="Gst.ControlSource" c:type="GstControlSource*"/>
          </parameter>
          <parameter name="property_name" transfer-ownership="none">
            <doc xml:space="preserve">The name of the child property to control</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="binding_type" transfer-ownership="none">
            <doc xml:space="preserve">The type of binding to create ("direct" or
"direct-absolute")</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_has_internal_source" c:identifier="ges_track_element_set_has_internal_source" glib:set-property="has-internal-source" version="1.18">
        <doc xml:space="preserve">Sets #GESTrackElement:has-internal-source for the element. If this is
set to %FALSE, this method will also set the
#GESTimelineElement:in-point of the element to 0 and its
#GESTimelineElement:max-duration to #GST_CLOCK_TIME_NONE.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%FALSE if @has_internal_source is forbidden for @object and
%TRUE in any other case.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="has_internal_source" transfer-ownership="none">
            <doc xml:space="preserve">Whether the @object should be allowed to have its
'internal time' properties set.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_track_type" c:identifier="ges_track_element_set_track_type" glib:set-property="track-type">
        <doc xml:space="preserve">Sets the #GESTrackElement:track-type for the element.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="object" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackElement</doc>
            <type name="TrackElement" c:type="GESTrackElement*"/>
          </instance-parameter>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">The new track-type for @object</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </method>
      <property name="active" writable="1" transfer-ownership="none" setter="set_active" default-value="TRUE">
        <doc xml:space="preserve">Whether the effect of the element should be applied in its
#GESTrackElement:track. If set to %FALSE, it will not be used in
the output of the track.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="auto-clamp-control-sources" version="1.18" writable="1" transfer-ownership="none" setter="set_auto_clamp_control_sources" getter="get_auto_clamp_control_sources" default-value="TRUE">
        <doc xml:space="preserve">Whether the control sources on the element (see
ges_track_element_set_control_source()) will be automatically
updated whenever the #GESTimelineElement:in-point or out-point of the
element change in value.

See ges_track_element_clamp_control_source() for how this is done
per control source.

Default value: %TRUE</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="has-internal-source" version="1.18" writable="1" transfer-ownership="none" setter="set_has_internal_source" default-value="FALSE">
        <doc xml:space="preserve">This property is used to determine whether the 'internal time'
properties of the element have any meaning. In particular, unless
this is set to %TRUE, the #GESTimelineElement:in-point and
#GESTimelineElement:max-duration can not be set to any value other
than the default 0 and #GST_CLOCK_TIME_NONE, respectively.

If an element has some *internal* *timed* source #GstElement that it
reads stream data from as part of its function in a #GESTrack, then
you'll likely want to set this to %TRUE to allow the
#GESTimelineElement:in-point and #GESTimelineElement:max-duration to
be set.

The default value is determined by the #GESTrackElementClass
@default_has_internal_source class property. For most
#GESSourceClass-es, this will be %TRUE, with the exception of those
that have a potentially *static* source, such as #GESImageSourceClass
and #GESTitleSourceClass. Otherwise, this will usually be %FALSE.

For most #GESOperation-s you will likely want to leave this set to
%FALSE. The exception may be for an operation that reads some stream
data from some private internal source as part of manipulating the
input data from the usual linked upstream #GESTrackElement.

For example, you may want to set this to %TRUE for a
#GES_TRACK_TYPE_VIDEO operation that wraps a #textoverlay that reads
from a subtitle file and places its text on top of the received video
data. The #GESTimelineElement:in-point of the element would be used
to shift the initial seek time on the #textoverlay away from 0, and
the #GESTimelineElement:max-duration could be set to reflect the
time at which the subtitle file runs out of data.

Note that GES can not support track elements that have both internal
content and manipulate the timing of their data streams (time
effects).</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="track" transfer-ownership="none" getter="get_track">
        <doc xml:space="preserve">The track that this element belongs to, or %NULL if it does not
belong to a track.</doc>
        <type name="Track"/>
      </property>
      <property name="track-type" writable="1" construct="1" transfer-ownership="none" setter="set_track_type" getter="get_track_type" default-value="GES_TRACK_TYPE_UNKNOWN">
        <doc xml:space="preserve">The track type of the element, which determines the type of track the
element can be added to (see #GESTrack:track-type). This should
correspond to the type of data that the element can produce or
process.</doc>
        <type name="TrackType"/>
      </property>
      <field name="parent">
        <type name="TimelineElement" c:type="GESTimelineElement"/>
      </field>
      <field name="active" readable="0" private="1">
        <type name="gboolean" c:type="gboolean"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TrackElementPrivate" c:type="GESTrackElementPrivate*"/>
      </field>
      <field name="asset" readable="0" private="1">
        <type name="Asset" c:type="GESAsset*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="20">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <glib:signal name="control-binding-added" when="first">
        <doc xml:space="preserve">This is emitted when a control binding is added to a child property
of the track element.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="control_binding" transfer-ownership="none">
            <doc xml:space="preserve">The control binding that has been added</doc>
            <type name="Gst.ControlBinding"/>
          </parameter>
        </parameters>
      </glib:signal>
      <glib:signal name="control-binding-removed" when="first">
        <doc xml:space="preserve">This is emitted when a control binding is removed from a child
property of the track element.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="control_binding" transfer-ownership="none">
            <doc xml:space="preserve">The control binding that has been removed</doc>
            <type name="Gst.ControlBinding"/>
          </parameter>
        </parameters>
      </glib:signal>
    </class>
    <class name="TrackElementAsset" c:symbol-prefix="track_element_asset" c:type="GESTrackElementAsset" parent="Asset" glib:type-name="GESTrackElementAsset" glib:get-type="ges_track_element_asset_get_type" glib:type-struct="TrackElementAssetClass">
      <implements name="MetaContainer"/>
      <implements name="Gio.AsyncInitable"/>
      <implements name="Gio.Initable"/>
      <virtual-method name="get_natural_framerate" invoker="get_natural_framerate" version="1.18">
        <doc xml:space="preserve">Result: %TRUE if @self has a natural framerate %FALSE otherwise</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @self has a natural framerate @FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="TrackElementAsset" c:type="GESTrackElementAsset*"/>
          </instance-parameter>
          <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate numerator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
          <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate denominator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
        </parameters>
      </virtual-method>
      <method name="get_natural_framerate" c:identifier="ges_track_element_asset_get_natural_framerate" version="1.18">
        <doc xml:space="preserve">Result: %TRUE if @self has a natural framerate %FALSE otherwise</doc>
        <return-value transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="TrackElementAsset" c:type="GESTrackElementAsset*"/>
          </instance-parameter>
          <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate numerator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
          <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The framerate denominator</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
        </parameters>
      </method>
      <method name="get_track_type" c:identifier="ges_track_element_asset_get_track_type" glib:get-property="track-type">
        <doc xml:space="preserve">Get the GESAssetTrackType the #GESTrackElement extracted from @self
should get into</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">a #GESTrackType</doc>
          <type name="TrackType" c:type="const GESTrackType"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="TrackElementAsset" c:type="GESTrackElementAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_track_type" c:identifier="ges_track_element_asset_set_track_type" glib:set-property="track-type">
        <doc xml:space="preserve">Set the #GESTrackType the #GESTrackElement extracted from @self
should get into</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESAsset</doc>
            <type name="TrackElementAsset" c:type="GESTrackElementAsset*"/>
          </instance-parameter>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">A #GESTrackType</doc>
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </method>
      <property name="track-type" writable="1" construct="1" transfer-ownership="none" setter="set_track_type" getter="get_track_type" default-value="GES_TRACK_TYPE_UNKNOWN">
        <type name="TrackType"/>
      </property>
      <field name="parent">
        <type name="Asset" c:type="GESAsset"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TrackElementAssetPrivate" c:type="GESTrackElementAssetPrivate*"/>
      </field>
      <field name="__ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="TrackElementAssetClass" c:type="GESTrackElementAssetClass" glib:is-gtype-struct-for="TrackElementAsset">
      <field name="parent_class">
        <type name="AssetClass" c:type="GESAssetClass"/>
      </field>
      <field name="get_natural_framerate">
        <callback name="get_natural_framerate">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @self has a natural framerate @FALSE otherwise.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="self" transfer-ownership="none">
              <doc xml:space="preserve">A #GESAsset</doc>
              <type name="TrackElementAsset" c:type="GESTrackElementAsset*"/>
            </parameter>
            <parameter name="framerate_n" direction="out" caller-allocates="0" transfer-ownership="full">
              <doc xml:space="preserve">The framerate numerator</doc>
              <type name="gint" c:type="gint*"/>
            </parameter>
            <parameter name="framerate_d" direction="out" caller-allocates="0" transfer-ownership="full">
              <doc xml:space="preserve">The framerate denominator</doc>
              <type name="gint" c:type="gint*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="3">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="TrackElementAssetPrivate" c:type="GESTrackElementAssetPrivate" disguised="1" opaque="1"/>
    <record name="TrackElementClass" c:type="GESTrackElementClass" glib:is-gtype-struct-for="TrackElement">
      <field name="parent_class" readable="0" private="1">
        <type name="TimelineElementClass" c:type="GESTimelineElementClass"/>
      </field>
      <field name="nleobject_factorytype">
        <type name="utf8" c:type="const gchar*"/>
      </field>
      <field name="create_gnl_object">
        <callback name="create_gnl_object">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">the #NLEObject to use in the #nlecomposition</doc>
            <type name="Gst.Element" c:type="GstElement*"/>
          </return-value>
          <parameters>
            <parameter name="object" transfer-ownership="none">
              <doc xml:space="preserve">The #GESTrackElement</doc>
              <type name="TrackElement" c:type="GESTrackElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="create_element">
        <callback name="create_element">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">the #GstElement that the underlying nleobject
controls.</doc>
            <type name="Gst.Element" c:type="GstElement*"/>
          </return-value>
          <parameters>
            <parameter name="object" transfer-ownership="none">
              <doc xml:space="preserve">The #GESTrackElement</doc>
              <type name="TrackElement" c:type="GESTrackElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="active_changed">
        <callback name="active_changed">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="object" transfer-ownership="none">
              <doc xml:space="preserve">A #GESTrackElement</doc>
              <type name="TrackElement" c:type="GESTrackElement*"/>
            </parameter>
            <parameter name="active" transfer-ownership="none">
              <doc xml:space="preserve">Whether the element is active or not inside the #nlecomposition</doc>
              <type name="gboolean" c:type="gboolean"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="changed">
        <callback name="changed">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="object" transfer-ownership="none">
              <type name="TrackElement" c:type="GESTrackElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="list_children_properties" introspectable="0">
        <callback name="list_children_properties" introspectable="0">
          <return-value>
            <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
          </return-value>
          <parameters>
            <parameter name="object" transfer-ownership="none">
              <type name="TrackElement" c:type="GESTrackElement*"/>
            </parameter>
            <parameter name="n_properties" transfer-ownership="none">
              <type name="guint" c:type="guint*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="lookup_child">
        <callback name="lookup_child">
          <return-value transfer-ownership="none">
            <doc xml:space="preserve">TRUE if @element and @pspec could be found. FALSE otherwise. In that
case the values for @pspec and @element are not modified. Unref @element after
usage.</doc>
            <type name="gboolean" c:type="gboolean"/>
          </return-value>
          <parameters>
            <parameter name="object" transfer-ownership="none">
              <doc xml:space="preserve">Object to lookup the property in</doc>
              <type name="TrackElement" c:type="GESTrackElement*"/>
            </parameter>
            <parameter name="prop_name" transfer-ownership="none">
              <doc xml:space="preserve">Name of the property to look up. You can specify the name of the
    class as such: "ClassName::property-name", to guarantee that you get the
    proper GParamSpec in case various GstElement-s contain the same property
    name. If you don't do so, you will get the first element found, having
    this property and the and the corresponding GParamSpec.</doc>
              <type name="utf8" c:type="const gchar*"/>
            </parameter>
            <parameter name="element" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
              <doc xml:space="preserve">pointer to a #GstElement that
    takes the real object to set property on</doc>
              <type name="Gst.Element" c:type="GstElement**"/>
            </parameter>
            <parameter name="pspec" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
              <doc xml:space="preserve">pointer to take the specification
    describing the property</doc>
              <type name="GObject.ParamSpec" c:type="GParamSpec**"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <union name="ABI" c:type="ABI">
        <field name="_ges_reserved" writable="1">
          <array zero-terminated="0" fixed-size="20">
            <type name="gpointer" c:type="gpointer"/>
          </array>
        </field>
        <record name="abi" c:type="abi">
          <field name="default_has_internal_source" writable="1">
            <type name="gboolean" c:type="gboolean"/>
          </field>
          <field name="default_track_type" writable="1">
            <type name="TrackType" c:type="GESTrackType"/>
          </field>
        </record>
      </union>
    </record>
    <record name="TrackElementPrivate" c:type="GESTrackElementPrivate" disguised="1" opaque="1"/>
    <record name="TrackPrivate" c:type="GESTrackPrivate" disguised="1" opaque="1"/>
    <bitfield name="TrackType" glib:type-name="GESTrackType" glib:get-type="ges_track_type_get_type" c:type="GESTrackType">
      <doc xml:space="preserve">Types of content handled by a track. If the content is not one of
@GES_TRACK_TYPE_AUDIO, @GES_TRACK_TYPE_VIDEO or @GES_TRACK_TYPE_TEXT,
the user of the #GESTrack must set the type to @GES_TRACK_TYPE_CUSTOM.

@GES_TRACK_TYPE_UNKNOWN is for internal purposes and should not be used
by users</doc>
      <member name="unknown" value="1" c:identifier="GES_TRACK_TYPE_UNKNOWN" glib:nick="unknown" glib:name="GES_TRACK_TYPE_UNKNOWN">
        <doc xml:space="preserve">A track of unknown type (i.e. invalid)</doc>
      </member>
      <member name="audio" value="2" c:identifier="GES_TRACK_TYPE_AUDIO" glib:nick="audio" glib:name="GES_TRACK_TYPE_AUDIO">
        <doc xml:space="preserve">An audio track</doc>
      </member>
      <member name="video" value="4" c:identifier="GES_TRACK_TYPE_VIDEO" glib:nick="video" glib:name="GES_TRACK_TYPE_VIDEO">
        <doc xml:space="preserve">A video track</doc>
      </member>
      <member name="text" value="8" c:identifier="GES_TRACK_TYPE_TEXT" glib:nick="text" glib:name="GES_TRACK_TYPE_TEXT">
        <doc xml:space="preserve">A text (subtitle) track</doc>
      </member>
      <member name="custom" value="16" c:identifier="GES_TRACK_TYPE_CUSTOM" glib:nick="custom" glib:name="GES_TRACK_TYPE_CUSTOM">
        <doc xml:space="preserve">A custom-content track</doc>
      </member>
      <function name="name" c:identifier="ges_track_type_name">
        <return-value transfer-ownership="none">
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <parameter name="type" transfer-ownership="none">
            <type name="TrackType" c:type="GESTrackType"/>
          </parameter>
        </parameters>
      </function>
    </bitfield>
    <class name="Transition" c:symbol-prefix="transition" c:type="GESTransition" parent="Operation" abstract="1" glib:type-name="GESTransition" glib:get-type="ges_transition_get_type" glib:type-struct="TransitionClass">
      <doc xml:space="preserve">Base class for media transitions.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <field name="parent" readable="0" private="1">
        <type name="Operation" c:type="GESOperation"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TransitionPrivate" c:type="GESTransitionPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="TransitionClass" c:type="GESTransitionClass" glib:is-gtype-struct-for="Transition">
      <field name="parent_class" readable="0" private="1">
        <type name="OperationClass" c:type="GESOperationClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <class name="TransitionClip" c:symbol-prefix="transition_clip" c:type="GESTransitionClip" parent="BaseTransitionClip" glib:type-name="GESTransitionClip" glib:get-type="ges_transition_clip_get_type" glib:type-struct="TransitionClipClass">
      <doc xml:space="preserve">Creates an object that mixes together the two underlying objects, A and B.
The A object is assumed to have a higher prioirity (lower number) than the
B object. At the transition in point, only A will be visible, and by the
end only B will be visible.

The shape of the video transition depends on the value of the "vtype"
property. The default value is "crossfade". For audio, only "crossfade" is
supported.

The ID of the ExtractableType is the nickname of the vtype property value. Note
that this value can be changed after creation and the GESExtractable.asset value
will be updated when needed.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_transition_clip_new">
        <doc xml:space="preserve">Creates a new #GESTransitionClip.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">a newly created #GESTransitionClip,
or %NULL if something went wrong.</doc>
          <type name="TransitionClip" c:type="GESTransitionClip*"/>
        </return-value>
        <parameters>
          <parameter name="vtype" transfer-ownership="none">
            <doc xml:space="preserve">the type of transition to create</doc>
            <type name="VideoStandardTransitionType" c:type="GESVideoStandardTransitionType"/>
          </parameter>
        </parameters>
      </constructor>
      <constructor name="new_for_nick" c:identifier="ges_transition_clip_new_for_nick">
        <doc xml:space="preserve">Creates a new #GESTransitionClip for the provided @nick.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created #GESTransitionClip,
or %NULL if something went wrong</doc>
          <type name="TransitionClip" c:type="GESTransitionClip*"/>
        </return-value>
        <parameters>
          <parameter name="nick" transfer-ownership="none">
            <doc xml:space="preserve">a string representing the type of transition to create</doc>
            <type name="utf8" c:type="char*"/>
          </parameter>
        </parameters>
      </constructor>
      <property name="vtype" writable="1" construct="1" transfer-ownership="none" default-value="GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE">
        <doc xml:space="preserve">a #GESVideoStandardTransitionType representing the wipe to use</doc>
        <type name="VideoStandardTransitionType"/>
      </property>
      <field name="parent" readable="0" private="1">
        <type name="BaseTransitionClip" c:type="GESBaseTransitionClip"/>
      </field>
      <field name="vtype">
        <doc xml:space="preserve">a #GESVideoStandardTransitionType indicating the type of video transition
to apply.</doc>
        <type name="VideoStandardTransitionType" c:type="GESVideoStandardTransitionType"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="TransitionClipPrivate" c:type="GESTransitionClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="TransitionClipClass" c:type="GESTransitionClipClass" glib:is-gtype-struct-for="TransitionClip">
      <field name="parent_class" readable="0" private="1">
        <type name="BaseTransitionClipClass" c:type="GESBaseTransitionClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="TransitionClipPrivate" c:type="GESTransitionClipPrivate" disguised="1" opaque="1"/>
    <record name="TransitionPrivate" c:type="GESTransitionPrivate" disguised="1" opaque="1"/>
    <class name="UriClip" c:symbol-prefix="uri_clip" c:type="GESUriClip" parent="SourceClip" glib:type-name="GESUriClip" glib:get-type="ges_uri_clip_get_type" glib:type-struct="UriClipClass">
      <doc xml:space="preserve">Represents all the output streams from a particular uri. It is assumed that
the URI points to a file of some type.</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_uri_clip_new">
        <doc xml:space="preserve">Creates a new #GESUriClip for the provided @uri.

&gt; **WARNING**: This function might 'discover` @uri **synchrounously**, it is
&gt; an IO and processing intensive task that you probably don't want to run in
&gt; an application mainloop. Have a look at #ges_asset_request_async to see how
&gt; to make that operation happen **asynchronously**.</doc>
        <return-value transfer-ownership="none" nullable="1">
          <doc xml:space="preserve">The newly created #GESUriClip, or
%NULL if there was an error.</doc>
          <type name="UriClip" c:type="GESUriClip*"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">the URI the source should control</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </constructor>
      <method name="get_uri" c:identifier="ges_uri_clip_get_uri" glib:get-property="uri">
        <doc xml:space="preserve">Get the location of the resource.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The location of the resource.</doc>
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESUriClip</doc>
            <type name="UriClip" c:type="GESUriClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_image" c:identifier="ges_uri_clip_is_image">
        <doc xml:space="preserve">Lets you know if @self is an image or not.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if @self is a still image %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESUriClip</doc>
            <type name="UriClip" c:type="GESUriClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_muted" c:identifier="ges_uri_clip_is_muted">
        <doc xml:space="preserve">Lets you know if the audio track of @self is muted or not.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the audio track of @self is muted, %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESUriClip</doc>
            <type name="UriClip" c:type="GESUriClip*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_is_image" c:identifier="ges_uri_clip_set_is_image" glib:set-property="is-image">
        <doc xml:space="preserve">Sets whether the clip is a still image or not.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESUriClip</doc>
            <type name="UriClip" c:type="GESUriClip*"/>
          </instance-parameter>
          <parameter name="is_image" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if @self is a still image, %FALSE otherwise</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_mute" c:identifier="ges_uri_clip_set_mute" glib:set-property="mute">
        <doc xml:space="preserve">Sets whether the audio track of this clip is muted or not.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">the #GESUriClip on which to mute or unmute the audio track</doc>
            <type name="UriClip" c:type="GESUriClip*"/>
          </instance-parameter>
          <parameter name="mute" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE to mute @self audio track, %FALSE to unmute it</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <property name="is-image" writable="1" construct="1" transfer-ownership="none" setter="set_is_image" default-value="FALSE">
        <doc xml:space="preserve">Whether this uri clip represents a still image or not. This must be set
before create_track_elements is called.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="mute" writable="1" construct="1" transfer-ownership="none" setter="set_mute" default-value="FALSE">
        <doc xml:space="preserve">Whether the sound will be played or not.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="supported-formats" writable="1" construct="1" transfer-ownership="none" default-value="GES_TRACK_TYPE_UNKNOWN">
        <type name="TrackType"/>
      </property>
      <property name="uri" writable="1" construct-only="1" transfer-ownership="none" getter="get_uri" default-value="NULL">
        <doc xml:space="preserve">The location of the file/resource to use.</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <field name="parent">
        <type name="SourceClip" c:type="GESSourceClip"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="UriClipPrivate" c:type="GESUriClipPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <class name="UriClipAsset" c:symbol-prefix="uri_clip_asset" c:type="GESUriClipAsset" parent="SourceClipAsset" glib:type-name="GESUriClipAsset" glib:get-type="ges_uri_clip_asset_get_type" glib:type-struct="UriClipAssetClass">
      <implements name="MetaContainer"/>
      <implements name="Gio.AsyncInitable"/>
      <implements name="Gio.Initable"/>
      <function name="finish" c:identifier="ges_uri_clip_asset_finish" version="1.16" throws="1">
        <doc xml:space="preserve">Finalize the request of an async #GESUriClipAsset</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">The #GESUriClipAsset previously requested</doc>
          <type name="UriClipAsset" c:type="GESUriClipAsset*"/>
        </return-value>
        <parameters>
          <parameter name="res" transfer-ownership="none">
            <doc xml:space="preserve">The #GAsyncResult from which to get the newly created #GESUriClipAsset</doc>
            <type name="Gio.AsyncResult" c:type="GAsyncResult*"/>
          </parameter>
        </parameters>
      </function>
      <function name="new" c:identifier="ges_uri_clip_asset_new" glib:finish-func="finish" glib:sync-func="request_sync">
        <doc xml:space="preserve">Creates a #GESUriClipAsset for @uri

Example of request of a GESUriClipAsset:
|[
// The request callback
static void
filesource_asset_loaded_cb (GESAsset * source, GAsyncResult * res, gpointer user_data)
{
  GError *error = NULL;
  GESUriClipAsset *filesource_asset;

  filesource_asset = ges_uri_clip_asset_finish (res, &amp;error);
  if (filesource_asset) {
   gst_print ("The file: %s is usable as a FileSource, it is%s an image and lasts %" GST_TIME_FORMAT,
       ges_asset_get_id (GES_ASSET (filesource_asset))
       ges_uri_clip_asset_is_image (filesource_asset) ? "" : " not",
       GST_TIME_ARGS (ges_uri_clip_asset_get_duration (filesource_asset));
  } else {
   gst_print ("The file: %s is *not* usable as a FileSource because: %s",
       ges_asset_get_id (source), error-&gt;message);
  }

  gst_object_unref (mfs);
}

// The request:
ges_uri_clip_asset_new (uri, (GAsyncReadyCallback) filesource_asset_loaded_cb, user_data);
]|</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">The URI of the file for which to create a #GESUriClipAsset</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
          <parameter name="cancellable" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">optional %GCancellable object, %NULL to ignore.</doc>
            <type name="Gio.Cancellable" c:type="GCancellable*"/>
          </parameter>
          <parameter name="callback" transfer-ownership="none" nullable="1" allow-none="1" scope="async" closure="3">
            <doc xml:space="preserve">a #GAsyncReadyCallback to call when the initialization is finished</doc>
            <type name="Gio.AsyncReadyCallback" c:type="GAsyncReadyCallback"/>
          </parameter>
          <parameter name="user_data" transfer-ownership="none" nullable="1" allow-none="1">
            <doc xml:space="preserve">The user data to pass when @callback is called</doc>
            <type name="gpointer" c:type="gpointer"/>
          </parameter>
        </parameters>
      </function>
      <function name="request_sync" c:identifier="ges_uri_clip_asset_request_sync" throws="1" glib:async-func="new">
        <doc xml:space="preserve">Creates a #GESUriClipAsset for @uri synchonously. You should avoid
to use it in application, and rather create #GESUriClipAsset asynchronously</doc>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve">A reference to the requested asset or %NULL if
an error happened</doc>
          <type name="UriClipAsset" c:type="GESUriClipAsset*"/>
        </return-value>
        <parameters>
          <parameter name="uri" transfer-ownership="none">
            <doc xml:space="preserve">The URI of the file for which to create a #GESUriClipAsset.
You can also use multi file uris for #GESMultiFileSource.</doc>
            <type name="utf8" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </function>
      <method name="get_duration" c:identifier="ges_uri_clip_asset_get_duration" glib:get-property="duration">
        <doc xml:space="preserve">Gets duration of the file represented by @self</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The duration of @self</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESUriClipAsset</doc>
            <type name="UriClipAsset" c:type="GESUriClipAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_info" c:identifier="ges_uri_clip_asset_get_info">
        <doc xml:space="preserve">Gets #GstDiscovererInfo about the file</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">#GstDiscovererInfo of specified asset</doc>
          <type name="GstPbutils.DiscovererInfo" c:type="GstDiscovererInfo*"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">Target asset</doc>
            <type name="UriClipAsset" c:type="const GESUriClipAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_max_duration" c:identifier="ges_uri_clip_asset_get_max_duration" version="1.18">
        <doc xml:space="preserve">Gets maximum duration of the file represented by @self,
it is usually the same as GESUriClipAsset::duration,
but in the case of nested timelines, for example, they
are different as those can be extended 'infinitely'.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The maximum duration of @self</doc>
          <type name="Gst.ClockTime" c:type="GstClockTime"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESUriClipAsset</doc>
            <type name="UriClipAsset" c:type="GESUriClipAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_stream_assets" c:identifier="ges_uri_clip_asset_get_stream_assets">
        <doc xml:space="preserve">Get the GESUriSourceAsset @self containes</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">a
#GList of #GESUriSourceAsset</doc>
          <type name="GLib.List" c:type="const GList*">
            <type name="UriSourceAsset"/>
          </type>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESUriClipAsset</doc>
            <type name="UriClipAsset" c:type="GESUriClipAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_image" c:identifier="ges_uri_clip_asset_is_image" version="1.18">
        <doc xml:space="preserve">Gets Whether the file represented by @self is an image or not</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">Whether the file represented by @self is an image or not</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESUriClipAsset</doc>
            <type name="UriClipAsset" c:type="GESUriClipAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <property name="duration" writable="1" transfer-ownership="none" getter="get_duration" default-value="18446744073709551615">
        <doc xml:space="preserve">The duration (in nanoseconds) of the media file</doc>
        <type name="guint64" c:type="guint64"/>
      </property>
      <property name="is-nested-timeline" version="1.18" transfer-ownership="none" default-value="FALSE">
        <doc xml:space="preserve">The duration (in nanoseconds) of the media file</doc>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <field name="parent">
        <type name="SourceClipAsset" c:type="GESSourceClipAsset"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="UriClipAssetPrivate" c:type="GESUriClipAssetPrivate*"/>
      </field>
      <field name="__ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="UriClipAssetClass" c:type="GESUriClipAssetClass" glib:is-gtype-struct-for="UriClipAsset">
      <field name="parent_class">
        <type name="SourceClipAssetClass" c:type="GESSourceClipAssetClass"/>
      </field>
      <field name="discoverer" readable="0" private="1">
        <type name="GstPbutils.Discoverer" c:type="GstDiscoverer*"/>
      </field>
      <field name="sync_discoverer" readable="0" private="1">
        <type name="GstPbutils.Discoverer" c:type="GstDiscoverer*"/>
      </field>
      <field name="discovered">
        <callback name="discovered">
          <return-value transfer-ownership="none">
            <type name="none" c:type="void"/>
          </return-value>
          <parameters>
            <parameter name="discoverer" transfer-ownership="none">
              <type name="GstPbutils.Discoverer" c:type="GstDiscoverer*"/>
            </parameter>
            <parameter name="info" transfer-ownership="none">
              <type name="GstPbutils.DiscovererInfo" c:type="GstDiscovererInfo*"/>
            </parameter>
            <parameter name="err" transfer-ownership="none">
              <type name="GLib.Error" c:type="GError*"/>
            </parameter>
            <parameter name="user_data" transfer-ownership="none" nullable="1" allow-none="1" closure="3">
              <type name="gpointer" c:type="gpointer"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="3">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
      <method name="set_timeout" c:identifier="ges_uri_clip_asset_class_set_timeout" deprecated="1" deprecated-version="1.24">
        <doc xml:space="preserve">Sets the timeout of #GESUriClipAsset loading</doc>
        <doc-deprecated xml:space="preserve">ges_discoverer_manager_set_timeout() should be used instead</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="klass" transfer-ownership="none">
            <doc xml:space="preserve">The #GESUriClipAssetClass on which to set the discoverer timeout</doc>
            <type name="UriClipAssetClass" c:type="GESUriClipAssetClass*"/>
          </instance-parameter>
          <parameter name="timeout" transfer-ownership="none">
            <doc xml:space="preserve">The timeout to set</doc>
            <type name="Gst.ClockTime" c:type="GstClockTime"/>
          </parameter>
        </parameters>
      </method>
    </record>
    <record name="UriClipAssetPrivate" c:type="GESUriClipAssetPrivate" disguised="1" opaque="1"/>
    <record name="UriClipClass" c:type="GESUriClipClass" glib:is-gtype-struct-for="UriClip">
      <field name="parent_class" readable="0" private="1">
        <type name="SourceClipClass" c:type="GESSourceClipClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="UriClipPrivate" c:type="GESUriClipPrivate" disguised="1" opaque="1"/>
    <record name="UriSource" c:type="GESUriSource" disguised="1" opaque="1">
      <attribute name="doc.skip" value="true"/>
    </record>
    <class name="UriSourceAsset" c:symbol-prefix="uri_source_asset" c:type="GESUriSourceAsset" parent="TrackElementAsset" glib:type-name="GESUriSourceAsset" glib:get-type="ges_uri_source_asset_get_type" glib:type-struct="UriSourceAssetClass">
      <doc xml:space="preserve">Asset to create a stream specific #GESSource for a media file.

NOTE: You should never request such a #GESAsset as they will be created automatically
by #GESUriClipAsset-s.</doc>
      <implements name="MetaContainer"/>
      <implements name="Gio.AsyncInitable"/>
      <implements name="Gio.Initable"/>
      <method name="get_filesource_asset" c:identifier="ges_uri_source_asset_get_filesource_asset">
        <doc xml:space="preserve">Get the #GESUriClipAsset @self is contained in</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">a #GESUriClipAsset</doc>
          <type name="UriClipAsset" c:type="const GESUriClipAsset*"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESUriClipAsset</doc>
            <type name="UriSourceAsset" c:type="GESUriSourceAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_stream_info" c:identifier="ges_uri_source_asset_get_stream_info">
        <doc xml:space="preserve">Get the #GstDiscovererStreamInfo user by @asset</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">a #GESUriClipAsset</doc>
          <type name="GstPbutils.DiscovererStreamInfo" c:type="GstDiscovererStreamInfo*"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESUriClipAsset</doc>
            <type name="UriSourceAsset" c:type="GESUriSourceAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_stream_uri" c:identifier="ges_uri_source_asset_get_stream_uri">
        <return-value transfer-ownership="none">
          <type name="utf8" c:type="const gchar*"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <type name="UriSourceAsset" c:type="GESUriSourceAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_image" c:identifier="ges_uri_source_asset_is_image" version="1.18">
        <doc xml:space="preserve">Check if @asset contains a single image</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the video stream corresponds to an image (i.e. only
contains one frame)</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="asset" transfer-ownership="none">
            <doc xml:space="preserve">A #GESUriClipAsset</doc>
            <type name="UriSourceAsset" c:type="GESUriSourceAsset*"/>
          </instance-parameter>
        </parameters>
      </method>
      <field name="parent">
        <type name="TrackElementAsset" c:type="GESTrackElementAsset"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="UriSourceAssetPrivate" c:type="GESUriSourceAssetPrivate*"/>
      </field>
      <field name="__ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="UriSourceAssetClass" c:type="GESUriSourceAssetClass" glib:is-gtype-struct-for="UriSourceAsset">
      <field name="parent_class">
        <type name="TrackElementAssetClass" c:type="GESTrackElementAssetClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="UriSourceAssetPrivate" c:type="GESUriSourceAssetPrivate" disguised="1" opaque="1"/>
    <constant name="VERSION_MAJOR" value="1" c:type="GES_VERSION_MAJOR">
      <type name="gint" c:type="gint"/>
    </constant>
    <constant name="VERSION_MICRO" value="0" c:type="GES_VERSION_MICRO">
      <type name="gint" c:type="gint"/>
    </constant>
    <constant name="VERSION_MINOR" value="25" c:type="GES_VERSION_MINOR">
      <type name="gint" c:type="gint"/>
    </constant>
    <constant name="VERSION_NANO" value="1" c:type="GES_VERSION_NANO">
      <type name="gint" c:type="gint"/>
    </constant>
    <class name="VideoSource" c:symbol-prefix="video_source" c:type="GESVideoSource" parent="Source" abstract="1" glib:type-name="GESVideoSource" glib:get-type="ges_video_source_get_type" glib:type-struct="VideoSourceClass">
      <doc xml:space="preserve">Base class for video sources</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <method name="get_natural_size" c:identifier="ges_video_source_get_natural_size" version="1.18">
        <doc xml:space="preserve">Retrieves the natural size of the video stream. The natural size, is
the size at which it will be displayed if no scaling is being applied.

NOTE: The sources take into account the potential video rotation applied
by the #videoflip element that is inside the source, effects applied on
the clip which potentially also rotate the element are not taken into
account.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the object has a natural size, %FALSE otherwise.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">A #GESVideoSource</doc>
            <type name="VideoSource" c:type="GESVideoSource*"/>
          </instance-parameter>
          <parameter name="width" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The natural width of the underlying source</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
          <parameter name="height" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve">The natural height of the underlying source</doc>
            <type name="gint" c:type="gint*"/>
          </parameter>
        </parameters>
      </method>
      <field name="parent" readable="0" private="1">
        <type name="Source" c:type="GESSource"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="VideoSourcePrivate" c:type="GESVideoSourcePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="VideoSourceClass" c:type="GESVideoSourceClass" glib:is-gtype-struct-for="VideoSource">
      <field name="parent_class" readable="0" private="1">
        <type name="SourceClass" c:type="GESSourceClass"/>
      </field>
      <field name="create_source" introspectable="0">
        <doc xml:space="preserve">method to return the GstElement to put in the source topbin.
Other elements will be queued, like a videoscale.
In the case of a VideoUriSource, for example, the subclass will return a decodebin,
and we will append a videoscale.</doc>
        <callback name="create_source" introspectable="0">
          <return-value>
            <type name="Gst.Element" c:type="GstElement*"/>
          </return-value>
          <parameters>
            <parameter name="object" transfer-ownership="none">
              <type name="TrackElement" c:type="GESTrackElement*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
      <union name="ABI" c:type="ABI">
        <field name="_ges_reserved" writable="1">
          <array zero-terminated="0" fixed-size="4">
            <type name="gpointer" c:type="gpointer"/>
          </array>
        </field>
        <record name="abi" c:type="abi">
          <field name="disable_scale_in_compositor" writable="1">
            <type name="gboolean" c:type="gboolean"/>
          </field>
          <field name="needs_converters">
            <callback name="needs_converters">
              <return-value transfer-ownership="none">
                <type name="gboolean" c:type="gboolean"/>
              </return-value>
              <parameters>
                <parameter name="self" transfer-ownership="none">
                  <type name="VideoSource" c:type="GESVideoSource*"/>
                </parameter>
              </parameters>
            </callback>
          </field>
          <field name="get_natural_size">
            <callback name="get_natural_size">
              <return-value transfer-ownership="none">
                <type name="gboolean" c:type="gboolean"/>
              </return-value>
              <parameters>
                <parameter name="self" transfer-ownership="none">
                  <type name="VideoSource" c:type="GESVideoSource*"/>
                </parameter>
                <parameter name="width" transfer-ownership="none">
                  <type name="gint" c:type="gint*"/>
                </parameter>
                <parameter name="height" transfer-ownership="none">
                  <type name="gint" c:type="gint*"/>
                </parameter>
              </parameters>
            </callback>
          </field>
          <field name="create_filters" introspectable="0">
            <callback name="create_filters" introspectable="0">
              <return-value transfer-ownership="none">
                <type name="gboolean" c:type="gboolean"/>
              </return-value>
              <parameters>
                <parameter name="self" transfer-ownership="none">
                  <type name="VideoSource" c:type="GESVideoSource*"/>
                </parameter>
                <parameter name="filters" transfer-ownership="none">
                  <array name="GLib.PtrArray" c:type="GPtrArray*">
                    <type name="gpointer" c:type="gpointer"/>
                  </array>
                </parameter>
                <parameter name="needs_converters" transfer-ownership="none">
                  <type name="gboolean" c:type="gboolean"/>
                </parameter>
              </parameters>
            </callback>
          </field>
        </record>
      </union>
    </record>
    <record name="VideoSourcePrivate" c:type="GESVideoSourcePrivate" disguised="1" opaque="1"/>
    <enumeration name="VideoStandardTransitionType" glib:type-name="GESVideoStandardTransitionType" glib:get-type="ges_video_standard_transition_type_get_type" c:type="GESVideoStandardTransitionType">
      <member name="none" value="0" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_NONE" glib:nick="none" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_NONE">
        <doc xml:space="preserve">Transition type has not been set,</doc>
      </member>
      <member name="bar_wipe_lr" value="1" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BAR_WIPE_LR" glib:nick="bar-wipe-lr" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BAR_WIPE_LR">
        <doc xml:space="preserve">A bar moves from left to right,</doc>
      </member>
      <member name="bar_wipe_tb" value="2" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BAR_WIPE_TB" glib:nick="bar-wipe-tb" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BAR_WIPE_TB">
        <doc xml:space="preserve">A bar moves from top to bottom,</doc>
      </member>
      <member name="box_wipe_tl" value="3" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_TL" glib:nick="box-wipe-tl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_TL">
        <doc xml:space="preserve">A box expands from the upper-left corner to the lower-right corner,</doc>
      </member>
      <member name="box_wipe_tr" value="4" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_TR" glib:nick="box-wipe-tr" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_TR">
        <doc xml:space="preserve">A box expands from the upper-right corner to the lower-left corner,</doc>
      </member>
      <member name="box_wipe_br" value="5" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_BR" glib:nick="box-wipe-br" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_BR">
        <doc xml:space="preserve">A box expands from the lower-right corner to the upper-left corner,</doc>
      </member>
      <member name="box_wipe_bl" value="6" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_BL" glib:nick="box-wipe-bl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_BL">
        <doc xml:space="preserve">A box expands from the lower-left corner to the upper-right corner,</doc>
      </member>
      <member name="four_box_wipe_ci" value="7" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FOUR_BOX_WIPE_CI" glib:nick="four-box-wipe-ci" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FOUR_BOX_WIPE_CI">
        <doc xml:space="preserve">A box shape expands from each of the four corners toward the center,</doc>
      </member>
      <member name="four_box_wipe_co" value="8" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FOUR_BOX_WIPE_CO" glib:nick="four-box-wipe-co" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FOUR_BOX_WIPE_CO">
        <doc xml:space="preserve">A box shape expands from the center of each quadrant toward the corners of each quadrant,</doc>
      </member>
      <member name="barndoor_v" value="21" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNDOOR_V" glib:nick="barndoor-v" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNDOOR_V">
        <doc xml:space="preserve">A central, vertical line splits and expands toward the left and right edges,</doc>
      </member>
      <member name="barndoor_h" value="22" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNDOOR_H" glib:nick="barndoor-h" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNDOOR_H">
        <doc xml:space="preserve">A central, horizontal line splits and expands toward the top and bottom edges,</doc>
      </member>
      <member name="box_wipe_tc" value="23" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_TC" glib:nick="box-wipe-tc" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_TC">
        <doc xml:space="preserve">A box expands from the top edge's midpoint to the bottom corners,</doc>
      </member>
      <member name="box_wipe_rc" value="24" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_RC" glib:nick="box-wipe-rc" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_RC">
        <doc xml:space="preserve">A box expands from the right edge's midpoint to the left corners,</doc>
      </member>
      <member name="box_wipe_bc" value="25" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_BC" glib:nick="box-wipe-bc" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_BC">
        <doc xml:space="preserve">A box expands from the bottom edge's midpoint to the top corners,</doc>
      </member>
      <member name="box_wipe_lc" value="26" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_LC" glib:nick="box-wipe-lc" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOX_WIPE_LC">
        <doc xml:space="preserve">A box expands from the left edge's midpoint to the right corners,</doc>
      </member>
      <member name="diagonal_tl" value="41" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DIAGONAL_TL" glib:nick="diagonal-tl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DIAGONAL_TL">
        <doc xml:space="preserve">A diagonal line moves from the upper-left corner to the lower-right corner,</doc>
      </member>
      <member name="diagonal_tr" value="42" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DIAGONAL_TR" glib:nick="diagonal-tr" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DIAGONAL_TR">
        <doc xml:space="preserve">A diagonal line moves from the upper right corner to the lower-left corner,</doc>
      </member>
      <member name="bowtie_v" value="43" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOWTIE_V" glib:nick="bowtie-v" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOWTIE_V">
        <doc xml:space="preserve">Two wedge shapes slide in from the top and bottom edges toward the center,</doc>
      </member>
      <member name="bowtie_h" value="44" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOWTIE_H" glib:nick="bowtie-h" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BOWTIE_H">
        <doc xml:space="preserve">Two wedge shapes slide in from the left and right edges toward the center,</doc>
      </member>
      <member name="barndoor_dbl" value="45" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNDOOR_DBL" glib:nick="barndoor-dbl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNDOOR_DBL">
        <doc xml:space="preserve">A diagonal line from the lower-left to upper-right corners splits and expands toward the opposite corners,</doc>
      </member>
      <member name="barndoor_dtl" value="46" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNDOOR_DTL" glib:nick="barndoor-dtl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNDOOR_DTL">
        <doc xml:space="preserve">A diagonal line from upper-left to lower-right corners splits and expands toward the opposite corners,</doc>
      </member>
      <member name="misc_diagonal_dbd" value="47" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_MISC_DIAGONAL_DBD" glib:nick="misc-diagonal-dbd" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_MISC_DIAGONAL_DBD">
        <doc xml:space="preserve">Four wedge shapes split from the center and retract toward the four edges,</doc>
      </member>
      <member name="misc_diagonal_dd" value="48" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_MISC_DIAGONAL_DD" glib:nick="misc-diagonal-dd" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_MISC_DIAGONAL_DD">
        <doc xml:space="preserve">A diamond connecting the four edge midpoints simultaneously contracts toward the center and expands toward the edges,</doc>
      </member>
      <member name="vee_d" value="61" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_VEE_D" glib:nick="vee-d" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_VEE_D">
        <doc xml:space="preserve">A wedge shape moves from top to bottom,</doc>
      </member>
      <member name="vee_l" value="62" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_VEE_L" glib:nick="vee-l" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_VEE_L">
        <doc xml:space="preserve">A wedge shape moves from right to left,</doc>
      </member>
      <member name="vee_u" value="63" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_VEE_U" glib:nick="vee-u" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_VEE_U">
        <doc xml:space="preserve">A wedge shape moves from bottom to top,</doc>
      </member>
      <member name="vee_r" value="64" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_VEE_R" glib:nick="vee-r" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_VEE_R">
        <doc xml:space="preserve">A wedge shape moves from left to right,</doc>
      </member>
      <member name="barnvee_d" value="65" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNVEE_D" glib:nick="barnvee-d" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNVEE_D">
        <doc xml:space="preserve">A 'V' shape extending from the bottom edge's midpoint to the opposite corners contracts toward the center and expands toward the edges,</doc>
      </member>
      <member name="barnvee_l" value="66" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNVEE_L" glib:nick="barnvee-l" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNVEE_L">
        <doc xml:space="preserve">A 'V' shape extending from the left edge's midpoint to the opposite corners contracts toward the center and expands toward the edges,</doc>
      </member>
      <member name="barnvee_u" value="67" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNVEE_U" glib:nick="barnvee-u" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNVEE_U">
        <doc xml:space="preserve">A 'V' shape extending from the top edge's midpoint to the opposite corners contracts toward the center and expands toward the edges,</doc>
      </member>
      <member name="barnvee_r" value="68" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNVEE_R" glib:nick="barnvee-r" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_BARNVEE_R">
        <doc xml:space="preserve">A 'V' shape extending from the right edge's midpoint to the opposite corners contracts toward the center and expands toward the edges,</doc>
      </member>
      <member name="iris_rect" value="101" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_IRIS_RECT" glib:nick="iris-rect" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_IRIS_RECT">
        <doc xml:space="preserve">A rectangle expands from the center.,</doc>
      </member>
      <member name="clock_cw12" value="201" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_CLOCK_CW12" glib:nick="clock-cw12" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_CLOCK_CW12">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the twelve o'clock position,</doc>
      </member>
      <member name="clock_cw3" value="202" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_CLOCK_CW3" glib:nick="clock-cw3" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_CLOCK_CW3">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the three o'clock position,</doc>
      </member>
      <member name="clock_cw6" value="203" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_CLOCK_CW6" glib:nick="clock-cw6" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_CLOCK_CW6">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the six o'clock position,</doc>
      </member>
      <member name="clock_cw9" value="204" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_CLOCK_CW9" glib:nick="clock-cw9" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_CLOCK_CW9">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the nine o'clock position,</doc>
      </member>
      <member name="pinwheel_tbv" value="205" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_PINWHEEL_TBV" glib:nick="pinwheel-tbv" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_PINWHEEL_TBV">
        <doc xml:space="preserve">Two radial hands sweep clockwise from the twelve and six o'clock positions,</doc>
      </member>
      <member name="pinwheel_tbh" value="206" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_PINWHEEL_TBH" glib:nick="pinwheel-tbh" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_PINWHEEL_TBH">
        <doc xml:space="preserve">Two radial hands sweep clockwise from the nine and three o'clock positions,</doc>
      </member>
      <member name="pinwheel_fb" value="207" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_PINWHEEL_FB" glib:nick="pinwheel-fb" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_PINWHEEL_FB">
        <doc xml:space="preserve">Four radial hands sweep clockwise,</doc>
      </member>
      <member name="fan_ct" value="211" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_CT" glib:nick="fan-ct" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_CT">
        <doc xml:space="preserve">A fan unfolds from the top edge, the fan axis at the center,</doc>
      </member>
      <member name="fan_cr" value="212" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_CR" glib:nick="fan-cr" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_CR">
        <doc xml:space="preserve">A fan unfolds from the right edge, the fan axis at the center,</doc>
      </member>
      <member name="doublefan_fov" value="213" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLEFAN_FOV" glib:nick="doublefan-fov" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLEFAN_FOV">
        <doc xml:space="preserve">Two fans, their axes at the center, unfold from the top and bottom,</doc>
      </member>
      <member name="doublefan_foh" value="214" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLEFAN_FOH" glib:nick="doublefan-foh" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLEFAN_FOH">
        <doc xml:space="preserve">Two fans, their axes at the center, unfold from the left and right,</doc>
      </member>
      <member name="singlesweep_cwt" value="221" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWT" glib:nick="singlesweep-cwt" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWT">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the top edge's midpoint,</doc>
      </member>
      <member name="singlesweep_cwr" value="222" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWR" glib:nick="singlesweep-cwr" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWR">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the right edge's midpoint,</doc>
      </member>
      <member name="singlesweep_cwb" value="223" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWB" glib:nick="singlesweep-cwb" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWB">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the bottom edge's midpoint,</doc>
      </member>
      <member name="singlesweep_cwl" value="224" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWL" glib:nick="singlesweep-cwl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWL">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the left edge's midpoint,</doc>
      </member>
      <member name="doublesweep_pv" value="225" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_PV" glib:nick="doublesweep-pv" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_PV">
        <doc xml:space="preserve">Two radial hands sweep clockwise and counter-clockwise from the top and bottom edges' midpoints,</doc>
      </member>
      <member name="doublesweep_pd" value="226" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_PD" glib:nick="doublesweep-pd" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_PD">
        <doc xml:space="preserve">Two radial hands sweep clockwise and counter-clockwise from the left and right edges' midpoints,</doc>
      </member>
      <member name="doublesweep_ov" value="227" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_OV" glib:nick="doublesweep-ov" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_OV">
        <doc xml:space="preserve">Two radial hands attached at the top and bottom edges' midpoints sweep from right to left,</doc>
      </member>
      <member name="doublesweep_oh" value="228" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_OH" glib:nick="doublesweep-oh" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_OH">
        <doc xml:space="preserve">Two radial hands attached at the left and right edges' midpoints sweep from top to bottom,</doc>
      </member>
      <member name="fan_t" value="231" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_T" glib:nick="fan-t" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_T">
        <doc xml:space="preserve">A fan unfolds from the bottom, the fan axis at the top edge's midpoint,</doc>
      </member>
      <member name="fan_r" value="232" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_R" glib:nick="fan-r" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_R">
        <doc xml:space="preserve">A fan unfolds from the left, the fan axis at the right edge's midpoint,</doc>
      </member>
      <member name="fan_b" value="233" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_B" glib:nick="fan-b" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_B">
        <doc xml:space="preserve">A fan unfolds from the top, the fan axis at the bottom edge's midpoint,</doc>
      </member>
      <member name="fan_l" value="234" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_L" glib:nick="fan-l" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FAN_L">
        <doc xml:space="preserve">A fan unfolds from the right, the fan axis at the left edge's midpoint,</doc>
      </member>
      <member name="doublefan_fiv" value="235" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLEFAN_FIV" glib:nick="doublefan-fiv" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLEFAN_FIV">
        <doc xml:space="preserve">Two fans, their axes at the top and bottom, unfold from the center,</doc>
      </member>
      <member name="doublefan_fih" value="236" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLEFAN_FIH" glib:nick="doublefan-fih" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLEFAN_FIH">
        <doc xml:space="preserve">Two fans, their axes at the left and right, unfold from the center,</doc>
      </member>
      <member name="singlesweep_cwtl" value="241" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWTL" glib:nick="singlesweep-cwtl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWTL">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the upper-left corner,</doc>
      </member>
      <member name="singlesweep_cwbl" value="242" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWBL" glib:nick="singlesweep-cwbl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWBL">
        <doc xml:space="preserve">A radial hand sweeps counter-clockwise from the lower-left corner.,</doc>
      </member>
      <member name="singlesweep_cwbr" value="243" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWBR" glib:nick="singlesweep-cwbr" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWBR">
        <doc xml:space="preserve">A radial hand sweeps clockwise from the lower-right corner,</doc>
      </member>
      <member name="singlesweep_cwtr" value="244" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWTR" glib:nick="singlesweep-cwtr" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SINGLESWEEP_CWTR">
        <doc xml:space="preserve">A radial hand sweeps counter-clockwise from the upper-right corner,</doc>
      </member>
      <member name="doublesweep_pdtl" value="245" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_PDTL" glib:nick="doublesweep-pdtl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_PDTL">
        <doc xml:space="preserve">Two radial hands attached at the upper-left and lower-right corners sweep down and up,</doc>
      </member>
      <member name="doublesweep_pdbl" value="246" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_PDBL" glib:nick="doublesweep-pdbl" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_DOUBLESWEEP_PDBL">
        <doc xml:space="preserve">Two radial hands attached at the lower-left and upper-right corners sweep down and up,</doc>
      </member>
      <member name="saloondoor_t" value="251" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SALOONDOOR_T" glib:nick="saloondoor-t" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SALOONDOOR_T">
        <doc xml:space="preserve">Two radial hands attached at the upper-left and upper-right corners sweep down,</doc>
      </member>
      <member name="saloondoor_l" value="252" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SALOONDOOR_L" glib:nick="saloondoor-l" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SALOONDOOR_L">
        <doc xml:space="preserve">Two radial hands attached at the upper-left and lower-left corners sweep to the right,</doc>
      </member>
      <member name="saloondoor_b" value="253" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SALOONDOOR_B" glib:nick="saloondoor-b" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SALOONDOOR_B">
        <doc xml:space="preserve">Two radial hands attached at the lower-left and lower-right corners sweep up,</doc>
      </member>
      <member name="saloondoor_r" value="254" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_SALOONDOOR_R" glib:nick="saloondoor-r" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_SALOONDOOR_R">
        <doc xml:space="preserve">Two radial hands attached at the upper-right and lower-right corners sweep to the left,</doc>
      </member>
      <member name="windshield_r" value="261" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_WINDSHIELD_R" glib:nick="windshield-r" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_WINDSHIELD_R">
        <doc xml:space="preserve">Two radial hands attached at the midpoints of the top and bottom halves sweep from right to left,</doc>
      </member>
      <member name="windshield_u" value="262" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_WINDSHIELD_U" glib:nick="windshield-u" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_WINDSHIELD_U">
        <doc xml:space="preserve">Two radial hands attached at the midpoints of the left and right halves sweep from top to bottom,</doc>
      </member>
      <member name="windshield_v" value="263" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_WINDSHIELD_V" glib:nick="windshield-v" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_WINDSHIELD_V">
        <doc xml:space="preserve">Two sets of radial hands attached at the midpoints of the top and bottom halves sweep from top to bottom and bottom to top,</doc>
      </member>
      <member name="windshield_h" value="264" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_WINDSHIELD_H" glib:nick="windshield-h" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_WINDSHIELD_H">
        <doc xml:space="preserve">Two sets of radial hands attached at the midpoints of the left and right halves sweep from left to right and right to left,</doc>
      </member>
      <member name="crossfade" value="512" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE" glib:nick="crossfade" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE">
        <doc xml:space="preserve">Crossfade</doc>
      </member>
      <member name="fade_in" value="513" c:identifier="GES_VIDEO_STANDARD_TRANSITION_TYPE_FADE_IN" version="1.22" glib:nick="fade-in" glib:name="GES_VIDEO_STANDARD_TRANSITION_TYPE_FADE_IN">
        <doc xml:space="preserve">Similar to crossfade, but fade in the front video without fading out
the background one</doc>
      </member>
    </enumeration>
    <enumeration name="VideoTestPattern" glib:type-name="GESVideoTestPattern" glib:get-type="ges_video_test_pattern_get_type" c:type="GESVideoTestPattern">
      <doc xml:space="preserve">The test pattern to produce</doc>
      <member name="smpte" value="0" c:identifier="GES_VIDEO_TEST_PATTERN_SMPTE" glib:nick="smpte" glib:name="GES_VIDEO_TEST_PATTERN_SMPTE">
        <doc xml:space="preserve">A standard SMPTE test pattern</doc>
      </member>
      <member name="snow" value="1" c:identifier="GES_VIDEO_TEST_PATTERN_SNOW" glib:nick="snow" glib:name="GES_VIDEO_TEST_PATTERN_SNOW">
        <doc xml:space="preserve">Random noise</doc>
      </member>
      <member name="black" value="2" c:identifier="GES_VIDEO_TEST_PATTERN_BLACK" glib:nick="black" glib:name="GES_VIDEO_TEST_PATTERN_BLACK">
        <doc xml:space="preserve">A black image</doc>
      </member>
      <member name="white" value="3" c:identifier="GES_VIDEO_TEST_PATTERN_WHITE" glib:nick="white" glib:name="GES_VIDEO_TEST_PATTERN_WHITE">
        <doc xml:space="preserve">A white image</doc>
      </member>
      <member name="red" value="4" c:identifier="GES_VIDEO_TEST_PATTERN_RED" glib:nick="red" glib:name="GES_VIDEO_TEST_PATTERN_RED">
        <doc xml:space="preserve">A red image</doc>
      </member>
      <member name="green" value="5" c:identifier="GES_VIDEO_TEST_PATTERN_GREEN" glib:nick="green" glib:name="GES_VIDEO_TEST_PATTERN_GREEN">
        <doc xml:space="preserve">A green image</doc>
      </member>
      <member name="blue" value="6" c:identifier="GES_VIDEO_TEST_PATTERN_BLUE" glib:nick="blue" glib:name="GES_VIDEO_TEST_PATTERN_BLUE">
        <doc xml:space="preserve">A blue image</doc>
      </member>
      <member name="checkers_1" value="7" c:identifier="GES_VIDEO_TEST_PATTERN_CHECKERS1" glib:nick="checkers-1" glib:name="GES_VIDEO_TEST_PATTERN_CHECKERS1">
        <doc xml:space="preserve">Checkers pattern (1px)</doc>
      </member>
      <member name="checkers_2" value="8" c:identifier="GES_VIDEO_TEST_PATTERN_CHECKERS2" glib:nick="checkers-2" glib:name="GES_VIDEO_TEST_PATTERN_CHECKERS2">
        <doc xml:space="preserve">Checkers pattern (2px)</doc>
      </member>
      <member name="checkers_4" value="9" c:identifier="GES_VIDEO_TEST_PATTERN_CHECKERS4" glib:nick="checkers-4" glib:name="GES_VIDEO_TEST_PATTERN_CHECKERS4">
        <doc xml:space="preserve">Checkers pattern (4px)</doc>
      </member>
      <member name="checkers_8" value="10" c:identifier="GES_VIDEO_TEST_PATTERN_CHECKERS8" glib:nick="checkers-8" glib:name="GES_VIDEO_TEST_PATTERN_CHECKERS8">
        <doc xml:space="preserve">Checkers pattern (8px)</doc>
      </member>
      <member name="circular" value="11" c:identifier="GES_VIDEO_TEST_PATTERN_CIRCULAR" glib:nick="circular" glib:name="GES_VIDEO_TEST_PATTERN_CIRCULAR">
        <doc xml:space="preserve">Circular pattern</doc>
      </member>
      <member name="blink" value="12" c:identifier="GES_VIDEO_TEST_PATTERN_BLINK" glib:nick="blink" glib:name="GES_VIDEO_TEST_PATTERN_BLINK">
        <doc xml:space="preserve">Alternate between black and white</doc>
      </member>
      <member name="smpte75" value="13" c:identifier="GES_VIDEO_TEST_PATTERN_SMPTE75" glib:nick="smpte75" glib:name="GES_VIDEO_TEST_PATTERN_SMPTE75">
        <doc xml:space="preserve">SMPTE test pattern (75% color bars)</doc>
      </member>
      <member name="zone_plate" value="14" c:identifier="GES_VIDEO_TEST_ZONE_PLATE" glib:nick="zone-plate" glib:name="GES_VIDEO_TEST_ZONE_PLATE">
        <doc xml:space="preserve">Zone plate</doc>
      </member>
      <member name="gamut" value="15" c:identifier="GES_VIDEO_TEST_GAMUT" glib:nick="gamut" glib:name="GES_VIDEO_TEST_GAMUT">
        <doc xml:space="preserve">Gamut checkers</doc>
      </member>
      <member name="chroma_zone_plate" value="16" c:identifier="GES_VIDEO_TEST_CHROMA_ZONE_PLATE" glib:nick="chroma-zone-plate" glib:name="GES_VIDEO_TEST_CHROMA_ZONE_PLATE">
        <doc xml:space="preserve">Chroma zone plate</doc>
      </member>
      <member name="solid_color" value="17" c:identifier="GES_VIDEO_TEST_PATTERN_SOLID" glib:nick="solid-color" glib:name="GES_VIDEO_TEST_PATTERN_SOLID">
        <doc xml:space="preserve">Solid color</doc>
      </member>
    </enumeration>
    <class name="VideoTestSource" c:symbol-prefix="video_test_source" c:type="GESVideoTestSource" parent="VideoSource" glib:type-name="GESVideoTestSource" glib:get-type="ges_video_test_source_get_type" glib:type-struct="VideoTestSourceClass">
      <doc xml:space="preserve">### Children Properties

 {{ libs/GESVideoTestSource-children-props.md }}</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <method name="get_pattern" c:identifier="ges_video_test_source_get_pattern">
        <doc xml:space="preserve">Get the video pattern used by the @source.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The video pattern used by the @source.</doc>
          <type name="VideoTestPattern" c:type="GESVideoTestPattern"/>
        </return-value>
        <parameters>
          <instance-parameter name="source" transfer-ownership="none">
            <doc xml:space="preserve">a #GESVideoTestPattern</doc>
            <type name="VideoTestSource" c:type="GESVideoTestSource*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_pattern" c:identifier="ges_video_test_source_set_pattern">
        <doc xml:space="preserve">Sets the source to use the given @pattern.</doc>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESVideoTestSource</doc>
            <type name="VideoTestSource" c:type="GESVideoTestSource*"/>
          </instance-parameter>
          <parameter name="pattern" transfer-ownership="none">
            <doc xml:space="preserve">a #GESVideoTestPattern</doc>
            <type name="VideoTestPattern" c:type="GESVideoTestPattern"/>
          </parameter>
        </parameters>
      </method>
      <field name="parent" readable="0" private="1">
        <type name="VideoSource" c:type="GESVideoSource"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="VideoTestSourcePrivate" c:type="GESVideoTestSourcePrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="VideoTestSourceClass" c:type="GESVideoTestSourceClass" glib:is-gtype-struct-for="VideoTestSource">
      <field name="parent_class">
        <type name="VideoSourceClass" c:type="GESVideoSourceClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="VideoTestSourcePrivate" c:type="GESVideoTestSourcePrivate" disguised="1" opaque="1"/>
    <class name="VideoTrack" c:symbol-prefix="video_track" c:type="GESVideoTrack" parent="Track" glib:type-name="GESVideoTrack" glib:get-type="ges_video_track_get_type" glib:type-struct="VideoTrackClass">
      <doc xml:space="preserve">A #GESVideoTrack is a default video #GESTrack, with a
#GES_TRACK_TYPE_VIDEO #GESTrack:track-type and "video/x-raw(ANY)"
#GESTrack:caps.

By default, a video track will have its #GESTrack:restriction-caps
set to "video/x-raw" with the following properties:

- width: 1280
- height: 720
- framerate: 30/1

These fields are needed for negotiation purposes, but you can change
their values if you wish. It is advised that you do so using
ges_track_update_restriction_caps() with new values for the fields you
wish to change, and any additional fields you may want to add. Unlike
using ges_track_set_restriction_caps(), this will ensure that these
default fields will at least have some value set.</doc>
      <implements name="MetaContainer"/>
      <implements name="Gst.ChildProxy"/>
      <constructor name="new" c:identifier="ges_video_track_new">
        <doc xml:space="preserve">Creates a new video track, with a #GES_TRACK_TYPE_VIDEO
#GESTrack:track-type and "video/x-raw(ANY)" #GESTrack:caps, and
"video/x-raw" #GESTrack:restriction-caps with the properties:

- width: 1280
- height: 720
- framerate: 30/1

You should use ges_track_update_restriction_caps() if you wish to
modify these fields, or add additional ones.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The newly created video track.</doc>
          <type name="VideoTrack" c:type="GESVideoTrack*"/>
        </return-value>
      </constructor>
      <field name="parent_instance">
        <type name="Track" c:type="GESTrack"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="VideoTrackPrivate" c:type="GESVideoTrackPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="VideoTrackClass" c:type="GESVideoTrackClass" glib:is-gtype-struct-for="VideoTrack">
      <field name="parent_class">
        <type name="TrackClass" c:type="GESTrackClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="VideoTrackPrivate" c:type="GESVideoTrackPrivate" disguised="1" opaque="1"/>
    <class name="VideoTransition" c:symbol-prefix="video_transition" c:type="GESVideoTransition" parent="Transition" glib:type-name="GESVideoTransition" glib:get-type="ges_video_transition_get_type" glib:type-struct="VideoTransitionClass">
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <constructor name="new" c:identifier="ges_video_transition_new">
        <return-value transfer-ownership="none">
          <type name="VideoTransition" c:type="GESVideoTransition*"/>
        </return-value>
      </constructor>
      <method name="get_border" c:identifier="ges_video_transition_get_border" glib:get-property="border" deprecated="1" deprecated-version="1.20">
        <doc xml:space="preserve">Get the border property of @self, this value represents
the border width of the transition.</doc>
        <doc-deprecated xml:space="preserve">Use ges_timeline_element_get_child_property instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The border values of @self or -1 if not meaningful
(this will happen when not using a smpte transition).</doc>
          <type name="gint" c:type="gint"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESVideoTransition to get the border from</doc>
            <type name="VideoTransition" c:type="GESVideoTransition*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="get_transition_type" c:identifier="ges_video_transition_get_transition_type" glib:get-property="transition-type">
        <doc xml:space="preserve">Get the transition type used by @trans.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The transition type used by @trans.</doc>
          <type name="VideoStandardTransitionType" c:type="GESVideoStandardTransitionType"/>
        </return-value>
        <parameters>
          <instance-parameter name="trans" transfer-ownership="none">
            <doc xml:space="preserve">a #GESVideoTransition</doc>
            <type name="VideoTransition" c:type="GESVideoTransition*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="is_inverted" c:identifier="ges_video_transition_is_inverted" deprecated="1" deprecated-version="1.20">
        <doc xml:space="preserve">Get the invert property of @self, this value represents
the direction of the transition.</doc>
        <doc-deprecated xml:space="preserve">Use ges_timeline_element_get_child_property instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">The invert value of @self</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESVideoTransition to get the inversion from</doc>
            <type name="VideoTransition" c:type="GESVideoTransition*"/>
          </instance-parameter>
        </parameters>
      </method>
      <method name="set_border" c:identifier="ges_video_transition_set_border" glib:set-property="border" deprecated="1" deprecated-version="1.20">
        <doc xml:space="preserve">Set the border property of @self, this value represents
the border width of the transition. In case this value does
not make sense for the current transition type, it is cached
for later use.</doc>
        <doc-deprecated xml:space="preserve">Use ges_timeline_element_set_child_property instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESVideoTransition to set the border to</doc>
            <type name="VideoTransition" c:type="GESVideoTransition*"/>
          </instance-parameter>
          <parameter name="value" transfer-ownership="none">
            <doc xml:space="preserve">The value of the border to set on @object</doc>
            <type name="guint" c:type="guint"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_inverted" c:identifier="ges_video_transition_set_inverted" deprecated="1" deprecated-version="1.20">
        <doc xml:space="preserve">Set the invert property of @self, this value represents
the direction of the transition. In case this value does
not make sense for the current transition type, it is cached
for later use.</doc>
        <doc-deprecated xml:space="preserve">Use ges_timeline_element_set_child_property instead.</doc-deprecated>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">The #GESVideoTransition to set invert on</doc>
            <type name="VideoTransition" c:type="GESVideoTransition*"/>
          </instance-parameter>
          <parameter name="inverted" transfer-ownership="none">
            <doc xml:space="preserve">%TRUE if the transition should be inverted %FALSE otherwise</doc>
            <type name="gboolean" c:type="gboolean"/>
          </parameter>
        </parameters>
      </method>
      <method name="set_transition_type" c:identifier="ges_video_transition_set_transition_type" glib:set-property="transition-type">
        <doc xml:space="preserve">Sets the transition being used to @type.</doc>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve">%TRUE if the transition type was properly changed, else %FALSE.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="self" transfer-ownership="none">
            <doc xml:space="preserve">a #GESVideoTransition</doc>
            <type name="VideoTransition" c:type="GESVideoTransition*"/>
          </instance-parameter>
          <parameter name="type" transfer-ownership="none">
            <doc xml:space="preserve">a #GESVideoStandardTransitionType</doc>
            <type name="VideoStandardTransitionType" c:type="GESVideoStandardTransitionType"/>
          </parameter>
        </parameters>
      </method>
      <property name="border" writable="1" transfer-ownership="none" setter="set_border" getter="get_border" default-value="0">
        <doc xml:space="preserve">This value represents the border width of the transition.</doc>
        <type name="guint" c:type="guint"/>
      </property>
      <property name="invert" deprecated="1" deprecated-version="1.20" writable="1" transfer-ownership="none" default-value="FALSE">
        <doc xml:space="preserve">This value represents the direction of the transition.</doc>
        <doc-deprecated xml:space="preserve">Use ges_timeline_element_[sg]et_child_property instead.</doc-deprecated>
        <type name="gboolean" c:type="gboolean"/>
      </property>
      <property name="transition-type" writable="1" transfer-ownership="none" setter="set_transition_type" getter="get_transition_type" default-value="GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE">
        <type name="VideoStandardTransitionType"/>
      </property>
      <field name="parent">
        <type name="Transition" c:type="GESTransition"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="VideoTransitionPrivate" c:type="GESVideoTransitionPrivate*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="VideoTransitionClass" c:type="GESVideoTransitionClass" glib:is-gtype-struct-for="VideoTransition">
      <field name="parent_class">
        <doc xml:space="preserve">parent class</doc>
        <type name="TransitionClass" c:type="GESTransitionClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="VideoTransitionPrivate" c:type="GESVideoTransitionPrivate" disguised="1" opaque="1"/>
    <class name="VideoUriSource" c:symbol-prefix="video_uri_source" c:type="GESVideoUriSource" parent="VideoSource" glib:type-name="GESVideoUriSource" glib:get-type="ges_video_uri_source_get_type" glib:type-struct="VideoUriSourceClass">
      <doc xml:space="preserve">### Children Properties

 {{ libs/GESVideoUriSource-children-props.md }}</doc>
      <implements name="Extractable"/>
      <implements name="MetaContainer"/>
      <property name="uri" writable="1" construct-only="1" transfer-ownership="none" default-value="NULL">
        <doc xml:space="preserve">The location of the file/resource to use.</doc>
        <type name="utf8" c:type="gchar*"/>
      </property>
      <field name="parent" readable="0" private="1">
        <type name="VideoSource" c:type="GESVideoSource"/>
      </field>
      <field name="uri" readable="0" private="1">
        <type name="utf8" c:type="gchar*"/>
      </field>
      <field name="priv" readable="0" private="1">
        <type name="UriSource" c:type="GESUriSource*"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="VideoUriSourceClass" c:type="GESVideoUriSourceClass" glib:is-gtype-struct-for="VideoUriSource">
      <field name="parent_class" readable="0" private="1">
        <type name="VideoSourceClass" c:type="GESVideoSourceClass"/>
      </field>
      <field name="_ges_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="VideoUriSourcePrivate" c:type="GESVideoUriSourcePrivate" disguised="1" opaque="1"/>
    <class name="XmlFormatter" c:symbol-prefix="xml_formatter" c:type="GESXmlFormatter" parent="BaseXmlFormatter" glib:type-name="GESXmlFormatter" glib:get-type="ges_xml_formatter_get_type" glib:type-struct="XmlFormatterClass">
      <implements name="Extractable"/>
      <field name="parent">
        <type name="BaseXmlFormatter" c:type="GESBaseXmlFormatter"/>
      </field>
      <field name="priv">
        <type name="XmlFormatterPrivate" c:type="GESXmlFormatterPrivate*"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="XmlFormatterClass" c:type="GESXmlFormatterClass" glib:is-gtype-struct-for="XmlFormatter">
      <field name="parent">
        <type name="BaseXmlFormatterClass" c:type="GESBaseXmlFormatterClass"/>
      </field>
      <field name="_ges_reserved">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </record>
    <record name="XmlFormatterPrivate" c:type="GESXmlFormatterPrivate" disguised="1" opaque="1"/>
    <function name="add_missing_uri_relocation_uri" c:identifier="ges_add_missing_uri_relocation_uri">
      <return-value transfer-ownership="none">
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="uri" transfer-ownership="none">
          <type name="utf8" c:type="const gchar*"/>
        </parameter>
        <parameter name="recurse" transfer-ownership="none">
          <type name="gboolean" c:type="gboolean"/>
        </parameter>
      </parameters>
    </function>
    <function name="buffer_add_frame_composition_meta" c:identifier="ges_buffer_add_frame_composition_meta" version="1.24">
      <doc xml:space="preserve">Attaches positioning metadata to a #GstBuffer.</doc>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">a pointer to the added #GESFrameCompositionMeta.</doc>
        <type name="FrameCompositionMeta" c:type="GESFrameCompositionMeta*"/>
      </return-value>
      <parameters>
        <parameter name="buffer" transfer-ownership="none">
          <doc xml:space="preserve">#GstBuffer to which protection metadata should be added.</doc>
          <type name="Gst.Buffer" c:type="GstBuffer*"/>
        </parameter>
      </parameters>
    </function>
    <function name="deinit" c:identifier="ges_deinit">
      <doc xml:space="preserve">Clean up any resources created by GES in ges_init().

It is normally not needed to call this function in a normal application as the
resources will automatically be freed when the program terminates.
This function is therefore mostly used by testsuites and other memory profiling tools.
This function should be called from the thread where ges_init() was called.

After this call GES should not be used until another ges_init() call.</doc>
      <return-value transfer-ownership="none">
        <type name="none" c:type="void"/>
      </return-value>
    </function>
    <function name="edge_name" c:identifier="ges_edge_name" moved-to="Edge.name" version="1.16">
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">A human friendly name for @edge</doc>
        <type name="utf8" c:type="const gchar*"/>
      </return-value>
      <parameters>
        <parameter name="edge" transfer-ownership="none">
          <doc xml:space="preserve">The #GESEdge to get the name of</doc>
          <type name="Edge" c:type="GESEdge"/>
        </parameter>
      </parameters>
    </function>
    <function name="edit_mode_name" c:identifier="ges_edit_mode_name" moved-to="EditMode.name" version="1.18">
      <doc xml:space="preserve">Return a string representation of @mode.</doc>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">a string representation of @mode.</doc>
        <type name="utf8" c:type="const gchar*"/>
      </return-value>
      <parameters>
        <parameter name="mode" transfer-ownership="none">
          <doc xml:space="preserve">a #GESEditMode</doc>
          <type name="EditMode" c:type="GESEditMode"/>
        </parameter>
      </parameters>
    </function>
    <function name="find_formatter_for_uri" c:identifier="ges_find_formatter_for_uri" version="1.18">
      <doc xml:space="preserve">Get the best formatter for @uri. It tries to find a formatter
compatible with @uri extension, if none is found, it returns the default
formatter asset.</doc>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">The #GESAsset for the best formatter to save to @uri</doc>
        <type name="Asset" c:type="GESAsset*"/>
      </return-value>
      <parameters>
        <parameter name="uri" transfer-ownership="none">
          <type name="utf8" c:type="const gchar*"/>
        </parameter>
      </parameters>
    </function>
    <function name="frame_composition_meta_api_get_type" c:identifier="ges_frame_composition_meta_api_get_type">
      <attribute name="doc.skip" value="true"/>
      <return-value transfer-ownership="none">
        <type name="GType" c:type="GType"/>
      </return-value>
    </function>
    <docsection name="ges.h">
      <doc xml:space="preserve">GES needs to be initialized after GStreamer itself. This section
contains the various functions to do so.</doc>
    </docsection>
    <docsection name="gestimeoverlayclip">
      <doc xml:space="preserve">A #GESSourceClip that overlays timing information on top.

## Asset

The default asset ID is "time-overlay" (of type #GES_TYPE_SOURCE_CLIP),
but the framerate and video size can be overridden using an ID of the form:

```
time-overlay, framerate=60/1, width=1920, height=1080, max-duration=5.0
```

## Children properties

{{ libs/GESTimeOverlayClip-children-props.md }}

## Symbols</doc>
    </docsection>
    <docsection name="gestypes">
      <doc xml:space="preserve">GStreamer Editing Services data types</doc>
    </docsection>
    <docsection name="gesuriasset">
      <doc xml:space="preserve">The #GESUriClipAsset is a special #GESAsset that lets you handle
the media file to use inside the GStreamer Editing Services. It has APIs that
let you get information about the medias. Also, the tags found in the media file are
set as Metadata of the Asset.</doc>
    </docsection>
    <function name="init" c:identifier="ges_init">
      <doc xml:space="preserve">Initialize the GStreamer Editing Service. Call this before any usage of
GES. You should take care of initilizing GStreamer before calling this
function.

MT safety.
GStreamer Editing Services do not guarantee MT safety.
An application is required to use GES APIs (including ges_deinit())
in the thread where ges_init() was called.</doc>
      <return-value transfer-ownership="none">
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
    </function>
    <function name="init_check" c:identifier="ges_init_check" throws="1">
      <doc xml:space="preserve">Initializes the GStreamer Editing Services library, setting up internal path lists,
and loading evrything needed.

This function will return %FALSE if GES could not be initialized
for some reason.</doc>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">%TRUE if GES could be initialized.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="argc" direction="inout" caller-allocates="0" transfer-ownership="full" nullable="1" allow-none="1">
          <doc xml:space="preserve">pointer to application's argc</doc>
          <type name="gint" c:type="int*"/>
        </parameter>
        <parameter name="argv" direction="inout" caller-allocates="0" transfer-ownership="full" nullable="1" allow-none="1">
          <doc xml:space="preserve">pointer to application's argv</doc>
          <array length="0" zero-terminated="0" c:type="char***">
            <type name="utf8" c:type="char**"/>
          </array>
        </parameter>
      </parameters>
    </function>
    <function name="init_get_option_group" c:identifier="ges_init_get_option_group" introspectable="0">
      <doc xml:space="preserve">Returns a #GOptionGroup with GES's argument specifications. The
group is set up to use standard GOption callbacks, so when using this
group in combination with GOption parsing methods, all argument parsing
and initialization is automated.

This function is useful if you want to integrate GES with other
libraries that use GOption (see g_option_context_add_group() ).

If you use this function, you should make sure you initialise the GStreamer
as one of the very first things in your program. That means you need to
use gst_init_get_option_group() and add it to the option context before
using the ges_init_get_option_group() result.</doc>
      <return-value transfer-ownership="full">
        <doc xml:space="preserve">a pointer to GES's option group.</doc>
        <type name="GLib.OptionGroup" c:type="GOptionGroup*"/>
      </return-value>
    </function>
    <function name="is_initialized" c:identifier="ges_is_initialized" version="1.16">
      <doc xml:space="preserve">Use this function to check if GES has been initialized with ges_init()
or ges_init_check().</doc>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve">%TRUE if initialization has been done, %FALSE otherwise.</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
    </function>
    <function name="list_assets" c:identifier="ges_list_assets">
      <doc xml:space="preserve">List all the assets in the current cache whose
#GESAsset:extractable-type are of the given type (including
subclasses).

Note that, since only a #GESExtractable can be extracted from an asset,
using `GES_TYPE_EXTRACTABLE` as @filter will return all the assets in
the current cache.</doc>
      <return-value transfer-ownership="container">
        <doc xml:space="preserve">A list of all
#GESAsset-s currently in the cache whose #GESAsset:extractable-type is
of the @filter type.</doc>
        <type name="GLib.List" c:type="GList*">
          <type name="Asset"/>
        </type>
      </return-value>
      <parameters>
        <parameter name="filter" transfer-ownership="none">
          <doc xml:space="preserve">The type of object that can be extracted from the asset</doc>
          <type name="GType" c:type="GType"/>
        </parameter>
      </parameters>
    </function>
    <function name="play_sink_convert_frame" c:identifier="ges_play_sink_convert_frame" deprecated="1" deprecated-version="1.18">
      <doc xml:space="preserve">Get the last buffer @playsink showed</doc>
      <doc-deprecated xml:space="preserve">Use the "convert-sample" action signal of
#playsink instead.</doc-deprecated>
      <return-value transfer-ownership="full" nullable="1">
        <doc xml:space="preserve">A #GstSample containing the last frame from
@playsink in the format defined by the @caps</doc>
        <type name="Gst.Sample" c:type="GstSample*"/>
      </return-value>
      <parameters>
        <parameter name="playsink" transfer-ownership="none">
          <doc xml:space="preserve">The playsink to get last frame from</doc>
          <type name="Gst.Element" c:type="GstElement*"/>
        </parameter>
        <parameter name="caps" transfer-ownership="none">
          <doc xml:space="preserve">The caps defining the format the return value will have</doc>
          <type name="Gst.Caps" c:type="GstCaps*"/>
        </parameter>
      </parameters>
    </function>
    <function name="pspec_equal" c:identifier="ges_pspec_equal">
      <return-value transfer-ownership="none">
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="key_spec_1" transfer-ownership="none" nullable="1" allow-none="1">
          <type name="gpointer" c:type="gconstpointer"/>
        </parameter>
        <parameter name="key_spec_2" transfer-ownership="none" nullable="1" allow-none="1">
          <type name="gpointer" c:type="gconstpointer"/>
        </parameter>
      </parameters>
    </function>
    <function name="pspec_hash" c:identifier="ges_pspec_hash">
      <return-value transfer-ownership="none">
        <type name="guint" c:type="guint"/>
      </return-value>
      <parameters>
        <parameter name="key_spec" transfer-ownership="none" nullable="1" allow-none="1">
          <type name="gpointer" c:type="gconstpointer"/>
        </parameter>
      </parameters>
    </function>
    <function-macro name="timeline_get_project" c:identifier="ges_timeline_get_project" introspectable="0">
      <doc xml:space="preserve">Helper macro to retrieve the project from which @obj was extracted</doc>
      <parameters>
        <parameter name="obj">
          <doc xml:space="preserve">The #GESTimeline from which to retrieve the project</doc>
        </parameter>
      </parameters>
    </function-macro>
    <function name="track_type_name" c:identifier="ges_track_type_name" moved-to="TrackType.name">
      <return-value transfer-ownership="none">
        <type name="utf8" c:type="const gchar*"/>
      </return-value>
      <parameters>
        <parameter name="type" transfer-ownership="none">
          <type name="TrackType" c:type="GESTrackType"/>
        </parameter>
      </parameters>
    </function>
    <function name="validate_register_action_types" c:identifier="ges_validate_register_action_types">
      <return-value transfer-ownership="none">
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
    </function>
    <function name="version" c:identifier="ges_version">
      <doc xml:space="preserve">Gets the version number of the GStreamer Editing Services library.</doc>
      <return-value transfer-ownership="none">
        <type name="none" c:type="void"/>
      </return-value>
      <parameters>
        <parameter name="major" direction="out" caller-allocates="0" transfer-ownership="full">
          <doc xml:space="preserve">pointer to a guint to store the major version number</doc>
          <type name="guint" c:type="guint*"/>
        </parameter>
        <parameter name="minor" direction="out" caller-allocates="0" transfer-ownership="full">
          <doc xml:space="preserve">pointer to a guint to store the minor version number</doc>
          <type name="guint" c:type="guint*"/>
        </parameter>
        <parameter name="micro" direction="out" caller-allocates="0" transfer-ownership="full">
          <doc xml:space="preserve">pointer to a guint to store the micro version number</doc>
          <type name="guint" c:type="guint*"/>
        </parameter>
        <parameter name="nano" direction="out" caller-allocates="0" transfer-ownership="full">
          <doc xml:space="preserve">pointer to a guint to store the nano version number</doc>
          <type name="guint" c:type="guint*"/>
        </parameter>
      </parameters>
    </function>
  </namespace>
</repository>