GPX2Video tool - Telemetry overlay

GPX GoPro Quick not working ? No tool working with Linux distribution. That's why I have written this small tool to extract telemetry data to enable stickers or gauges on your videos.

GPX2Video can convert the data recorded by your GoPro (GPS, accelerometer, camera settings and more) or reads an input GPX file. Visualize data or maps on your videos.

Finally, gpx2video should work with any camera and you are able to customize your gauges and much more.

gpx2video is only a test tool and isn't yet a final release!

Please test and report issues. Tested with GoPro 5, 6, 7, 8 and 9 (with last firmware).

Features

gpx2video can read and extract from your gpx input file:

time,
position,
elevation,
speed,
average speed,
max speed,
heartrate,
cadence,
temperature

gpx2video can extract GPMD data from GoPro GPMD stream in several format:

Text dump
RAW dump
GPX data

gpx2video can draw a map widget with your track. It supports multi map source:

OpenStreetMap I © OpenStreetMap contributors
Maps-For-Free Maps © Maps-For-Free
OpenCycleMap Maps © thunderforest.com, Data © osm.org/copyright
OpenTopoMap © OpenTopoMap (CC-BY-SA)
Public Transport Maps © ÖPNVKarte, Data © OpenStreetMap contributors
Google Maps Map provided by Google
Google Satellite Map provided by Google
Google Hybrid Map provided by Google
Virtual Earth Map provided by Microsoft
Virtual Earth Satellite Map provided by Microsoft
Virtual Earth Hybrid Map provided by Microsoft
IGN Essentiel Map Map provided by IGN
IGN Essentiel Photo Map provided by IGN

gpx2video can synchronize your video with your gpx input file.

How it works ?

gpx2video is able to extract and parse metadata and sensor data recorded by your GoPro.

$ ffprobe GH010337.MP4
ffprobe version 3.2.2 Copyright (c) 2007-2016 the FFmpeg developers
  built with gcc 6.2.1 (Debian 6.2.1-5) 20161124
...
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'GH010337.MP4':
  Metadata:
    major_brand     : mp41
    minor_version   : 538120216
    compatible_brands: mp41
    creation_time   : 2021-12-08T09:56:26.000000Z
...
  Duration: 00:00:52.38, start: 0.000000, bitrate: 100345 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 2704x1520 [SAR 1:1 DAR 169:95], 100078 kb/s, 50 fps, 50 tbr, 90k tbn, 100 tbc (default)
    Metadata:
      creation_time   : 2021-12-08T09:56:26.000000Z
      handler_name    : GoPro AVC  
      encoder         : GoPro AVC encoder
      timecode        : 09:56:26:43
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
    Metadata:
      creation_time   : 2021-12-08T09:56:26.000000Z
      handler_name    : GoPro AAC  
      timecode        : 09:56:26:43
    Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
    Metadata:
      creation_time   : 2021-12-08T09:56:26.000000Z
      handler_name    : GoPro TCD  
      timecode        : 09:56:26:43
    Stream #0:3(eng): Data: none (gpmd / 0x646D7067), 48 kb/s (default)
    Metadata:
      creation_time   : 2021-12-08T09:56:26.000000Z
      handler_name    : GoPro MET  
    Stream #0:4(eng): Data: none (fdsc / 0x63736466), 12 kb/s (default)
    Metadata:
      creation_time   : 2021-12-08T09:56:26.000000Z
      handler_name    : GoPro SOS

gpx2video uses the creation_time field to synchronize your video with your GPX file. Warning, creation_time is in local time. But this date isn't synchronized with the GPS source.

If gpx2video finds the 'GoPro MET' stream, it searches packet with GPS fix to determine the offset time to use.

"sync" command permits to test the sychronization process:

$ ./gpx2video -v -m GOPR1860.MP4 sync
Time synchronization...
PACKET: 0 - PTS: 0 - TIMESTAMP: 0 ms - TIME: 2022-01-16 10:05:03 - GPS FIX: 0 - GPS TIME: 2022-01-16 10:01:38.959 - OFFSET: -205
PACKET: 1 - PTS: 1000 - TIMESTAMP: 1000 ms - TIME: 2022-01-16 10:05:04 - GPS FIX: 0 - GPS TIME: 2022-01-16 10:01:40.939 - OFFSET: -204
PACKET: 2 - PTS: 2000 - TIMESTAMP: 2000 ms - TIME: 2022-01-16 10:05:05 - GPS FIX: 0 - GPS TIME: 2022-01-16 10:01:41.929 - OFFSET: -204
PACKET: 3 - PTS: 3000 - TIMESTAMP: 3000 ms - TIME: 2022-01-16 10:05:06 - GPS FIX: 0 - GPS TIME: 2022-01-16 10:01:42.919 - OFFSET: -204
...
PACKET: 20 - PTS: 20000 - TIMESTAMP: 20000 ms - TIME: 2022-01-16 10:05:23 - GPS FIX: 0 - GPS TIME: 2022-01-16 10:01:59.969 - OFFSET: -204
PACKET: 21 - PTS: 21000 - TIMESTAMP: 21000 ms - TIME: 2022-01-16 10:05:24 - GPS FIX: 0 - GPS TIME: 2022-01-16 10:02:00.959 - OFFSET: -204
PACKET: 22 - PTS: 22000 - TIMESTAMP: 22000 ms - TIME: 2022-01-16 10:05:25 - GPS FIX: 0 - GPS TIME: 2022-01-16 10:02:01.949 - OFFSET: -204
PACKET: 23 - PTS: 23000 - TIMESTAMP: 23000 ms - TIME: 2022-01-16 10:05:26 - GPS FIX: 0 - GPS TIME: 2022-01-16 10:02:02.939 - OFFSET: -204
PACKET: 24 - PTS: 24000 - TIMESTAMP: 24000 ms - TIME: 2022-01-16 10:05:27 - GPS FIX: 2 - GPS TIME: 2022-01-16 10:02:03.929 - OFFSET: -204
Video stream synchronized with success

At last, but not least, you can add an user offset (in ms).

$ ./gpx2video -m GOPR1860.MP4 --offset 9000 ...

Build

To build gpx2video, please install all dependancies (on Debian):

apt-get install cmake g++ libevent-dev libssl-dev libcurl4-gnutls-dev \
    libavutil-dev libavformat-dev libavcodec-dev libavfilter-dev \
    libswresample-dev libswscale-dev libopenimageio-dev libgeographic-dev \
    libcairo2-dev libopenexr-dev

Then build in using cmake tools:

$ git clone https://github.com/progweb/gpx2video.git
$ mkdir gpx2video/build
$ cd gpx2video/build
$ cmake ..
$ make
$ ln -s ../assets assets
$ ./gpx2video -h

Please execute gpx2video tool from the build path so as it finds assets data.

Usage

gpx2video is a command line tool.

To extract GoPro GPMD data from media stream:

$ ./gpx2video -v -m GOPR1860.MP4 -o output.gpx -f 3 extract
gpx2video v0.0.0
creation_time = 2020-12-13T09:56:27.000000Z
Failed to find decoder for stream #2
Failed to find decoder for stream #3
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../../video/GOPR1860.MP4':
...
Extract GPMD data...
PACKET: 0 - PTS: 0 - TIMESTAMP: 0 ms - TIME: 1970-01-01 00:00:00
PACKET: 1 - PTS: 1001 - TIMESTAMP: 1001 ms - TIME: 1970-01-01 00:00:01

To render a video stream with telemetry data:

$ ./gpx2video -v -m GH020340.MP4 -g ACTIVITY.gpx -l layout.xml -o output.mp4 video
gpx2video v0.0.0
creation_time = 2021-12-08T10:34:50.000000Z
...
[read the input media metadata]
...
Track info:
  Name        : Road biking
  Comment     : 
  Description : 
  Source      : 
  Type        : road_biking
  Number      : 
  Segments:   : 1
Output #0, mp4, to 'output-overview.mp4':
  Stream #0:0: Video: h264, yuvj420p(pc), 2704x1520 [SAR 1:1 DAR 169:95], q=2-31, 32000 kb/s, 50 tbn
  Stream #0:1: Audio: aac (LC), 48000 Hz, stereo, fltp, 128 kb/s
Parsing layout.xml
Load widget 'grade'
Initialize grade widget
Load widget 'speed'
Initialize speed widget
Load widget 'elevation'
Initialize elevation widget
Load widget 'cadence'
Initialize cadence widget
Load map widget
Initialize map widget
Cache initialiization...
Time synchronization...
PACKET: 0 - PTS: 0 - TIMESTAMP: 0 ms - TIME: 2021-12-08 09:34:50 - GPS TIME: - OFFSET: 478042309
PACKET: 1 - PTS: 1000 - TIMESTAMP: 1000 ms - TIME: 2021-12-08 09:34:51 - GPS TIME: 2021-12-08 09:38:36.850 - OFFSET: 225
Video stream synchronized with success
Download map from OpenStreetMap I...
  Download tile 6 / 6 [##################################################] DONE
...
[Download, build map then draw your track]
...
Build map...
FRAME: 0 - PTS: 0 - TIMESTAMP: 0 ms - TIME: 2021-12-08 10:38:35
  Time: 2021-12-08 10:38:38. Distance: 35.841 km in 6330.000 seconds, current speed is 25.817 (valid: true)
FRAME: 1 - PTS: 1800 - TIMESTAMP: 20 ms - TIME: 2021-12-08 10:38:35
  Time: 2021-12-08 10:38:38. Distance: 35.841 km in 6330.000 seconds, current speed is 25.817 (valid: true)
[Process each frame]
...

How change gauges ?

Gauges size and position can be set from the layout.xml file. (see: samples/layout-1920x1080.xml)

You can edit layout.xml file to enable/disable gauge or edit label and position:

<?xml version="1.0" encoding="UTF-8"?>
<layout>
	<widget x="250" y="450" width="600" height="120" position="left" align="vertical">
		<type>speed</type>
		<name>VITESSE</name>
		<margin>20</margin>
		<padding>5</padding>
		<unit>kph</unit>
	</widget>		
	<widget x="250" y="450" width="600" height="120" position="left" align="vertical">
		<type>elevation</type>
		<name>ALTITUDE</name>
		<margin>20</margin>
		<padding>5</padding>
		<unit>m</unit>
	</widget>
	<widget x="250" y="450" width="600" height="120" position="right" align="vertical">
		<type>date</type>
		<name>DATE</name>
		<margin>20</margin>
		<padding>5</padding>
		<format>%d-%m-%Y</format>
	</widget>
	<widget x="250" y="450" width="600" height="120" position="left" align="vertical" display="false">
		<type>heartrate</type>
		<name>FREQ. CARDIAQUE</name>
		<margin>20</margin>
		<padding>5</padding>
	</widget>		
	<track x="800" y="300" width="640" height="480" position="none" display="false">
	</track>
	<map x="800" y="300" width="640" height="480" position="none">
		<source>1</source>
		<zoom>12</zoom>
		<factor>2.0</factor>
	</map>
</layout>

Here all widget element settings:

<widget x="250" y="450" width="600" height="120" position="left" align="vertical" display="true">
	<type>speed</type>
	<name>VITESSE</name>
	<margin>20</margin>
	<padding>5</padding>
	<unit>kph</unit>
	<zoom>stretch</zoom>
	<source>fichier.jpg</source>
	<text-color>#00ff00ff</text-color>
	<text-shadow>3</text-shadow>
	<border>5</border>
	<border-color>#000000b0</border-color>
	<background-color>#0000004c</background-color>
</widget>

type gauges supported are:

speed, maxspeed, avgspeed
grade, elevation
date, time, duration
position
distance
cadence
heartrate
temperature
image
lap

display values are: true or false. It permits to render or not the widget. The display default value is true.

position values are: none, left, right, top, bottom, top-left, top-right, bottom-left and bottom-right. If position attribute is defined, gpx2video ignores and computes x and y values.

align values are: horizontal or vertical. If position isn't defined, align value isn't used.

unit values are:

mph, kph,
km, m or miles.
C, celsius or F, fahrenheit

zoom values are: none, fit, fill, crop and stretch. This parameter is used only by the image widget.

Note: Widget date accepts format element too.

You can set border size and color, the background color and text color too. Color is hex value as html "#RRGGBBAA".

padding value sets the space around the text. Whereas, margin value defines the space around the widget.

Map widget can be auto positionned as x, y and/or width, height aren't set. At last, you can define several map widgets.

Lap widget accepts nbr-lap element setting. Value is the lap target number.

Maps

You can specify map source from a list. Warning, all maps aren't free.

gpx2video downloads each tile with the zoom level in your ~/.gpx2video/cache path. Then build the map.

Finally, gpx2video renders a mapbox in applying the zoom factor.

As you use map or track command line, please provide map settings (source, zoom, factor) on the command lines.

To render map:

$ ./gpx2video -g ACTIVITY.gpx -o map.png --map-source=1 --map-zoom=11 --map-factor 2.0 map

To render map & track:

$ ./gpx2video -g ACTIVITY.gpx -o map.png --map-source=1 --map-zoom=11 --map-factor 2.0 track

Map settings:

<map x="250" y="450" width="600" height="120" position="left" display="true">
	<source>1</source>
	<zoom>11</zoom>
	<factor>1.2</factor>
	<marker>60</marker>
	<border>5</border>
	<border-color>#000000b0</border-color>
	<background-color>#0000004c</background-color>
</map>

zoom value sets the map details. factor value applies a zoom factor as render. marker marker size in pixels.

Tracks

You can also display only the track without the map background in using track widget.

Track settings:

<track x="250" y="450" width="600" height="120" position="left" display="true">
	<marker>60</marker>
	<border>5</border>
	<border-color>#000000b0</border-color>
	<background-color>#0000004c</background-color>
</widget>

Extract tools

You can extract and parse GoPro MET stream:

$ ./gpx2video -m GH010434.MP4 -o data.txt -f 1 extract

Or, you can extract the GoPro MET stream as raw data:

$ ./gpx2video -m GH010434.MP4 -o data.bin -f 2 extract

As exiftool, you can extract GPX from GoPro MP4 video file too:

$ ./gpx2video -m GH010434.MP4 -o track.gpx -f 3 extract

In future release, gpx2video should be able to use more data from this stream as accelerometer and gyroscope.

Telemetry tools

You can convert, filter and interpolate GPX data.

$ ./gpx2video -g ACTIVITY.gpx -o data.csv --telemetry=0 compute

This tool permits to convert GPX to CSV and/or apply a filter on the GPS data (lat. and lon. values). Since gpx2video interpolates data each 1s in using different filters: linear, kalman or interpolation.

Note: The result isn't yet satisfactory

ToDo

Render gauge:
- hflip: flip icon and label
- gpx fix mode: disable gauge on nofix
- svg: add icon svg support
Render maps (alpha, size, position, zoom...)
Render track (color, remaining, speed gradient...)
Widget text
Gallery photo import
User interface integration
GPS interpolate data between two waypoints.
360 videos support

Overlay software

Here, you can find other solutions working on Linux:

GoPro Map Sync - (https://github.com/thomergil/gopro-map-sync)
Overlaying Dashboard - (https://github.com/time4tea/gopro-dashboard-overlay)
GPS data overlay on videos - (https://github.com/peregin/gps-overlay-on-video)

Credits

gpx2video is based on several open source libraries:

libevent - (https://libevent.org)
libcurl - (https://curl.se/libcurl)
ffmpeg - (https://ffmpeg.org)
gpxlib - (http://irdvo.nl/gpxlib)
osm-gps-map - (http://nzjrs.github.io/osm-gps-map)
cairo - (https://www.cairographics.org)
olive - (https://www.olivevideoeditor.org)
OpenImageIO - (https://sites.google.com/site/openimageio/home)

Name		Name	Last commit message	Last commit date
Latest commit History 87 Commits
.github/ISSUE_TEMPLATE		.github/ISSUE_TEMPLATE
assets		assets
cmake		cmake
gpxlib		gpxlib
layoutlib		layoutlib
samples		samples
src		src
tests		tests
utmconvert		utmconvert
.gitignore		.gitignore
CMakeLists.txt		CMakeLists.txt
LICENSE		LICENSE
README.md		README.md

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GPX2Video tool - Telemetry overlay

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GPX2Video tool - Telemetry overlay

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