Fix IO tutorial

Author: sitic

docs/tutorials/io.ipynb

@@ -547,12 +547,16 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "tags": [
+     "skip-execution"
+    ]
+   },
    "outputs": [],
    "source": [
     "animation = om.show_video_pair(\n",
-    "    video,\n",
-    "    overlay,\n",
+    "    video1=video,\n",
+    "    video2=overlay,\n",
     "    title1=\"Original Recording\",\n",
     "    title2=\"Action Potential Wave Front\",\n",
     "    cmap2=\"Purples\",\n",
@@ -572,6 +576,18 @@
    },
    "outputs": [],
    "source": [
+    "render(lambda: om.show_video_pair(\n",
+    "            video1=video,\n",
+    "            video2=overlay,\n",
+    "            title1=\"Original Recording\",\n",
+    "            title2=\"Action Potential Wave Front\",\n",
+    "            cmap2=\"Purples\",\n",
+    "            vmin2=0,\n",
+    "            vmax2=1\n",
+    "        ),\n",
+    "        mp4_filename=\"video.mp4\",\n",
+    "        save_args={'fps': 15, 'hide_framecounter': True}\n",
+    "        )\n",
     "Video(filename=\"video.mp4\", embed=True, html_attributes=\"controls autoplay loop\", width=640)"
    ]
   },

optimap/video/__init__.py

@@ -1,5 +1,6 @@
 """Functions for loading, viewing, filtering, saving and exporting videos."""
 
+from ..image import normalize
 from ._edit import (
     crop,
     flip_left_right,
@@ -23,7 +24,6 @@
 )
 from ._filters import (
     evolve_jitter_filter,
-    normalize,
     normalize_pixelwise,
     normalize_pixelwise_slidingwindow,
     smooth_spatiotemporal,

optimap/video/_filters.py

@@ -5,7 +5,6 @@
 
 from .. import _cpp
 from ..utils import _print
-from ..image import normalize
 
 
 def normalize_pixelwise(video: np.ndarray, ymin=0, ymax=1):