I'm pretty sure this is not a Totem issue, but rather a GStreamer issue.

E.g. for the linked video, if I try to play it through playbin on Jammy
(`gst-launch-1.0 playbin
uri=file:///home/floe/Downloads/big_buck_bunny_720p_surround.mp4`), I
get a black window with the audio track playing in the background. Same
happens for any movie that also has the same issue with Totem.

Running with GST_DEBUG=3 gives a lot of
```
0:00:00.381581482 183712 0x7f5f6c05b640 ERROR       vaapivideomemory 
gstvaapivideomemory.c:254:map_vaapi_memory: failed to make image current
0:00:00.381663666 183712 0x7f5f6c05b640 ERROR                default 
video-frame.c:168:gst_video_frame_map_id: failed to map video frame plane 0
0:00:00.381711318 183712 0x7f5f6c05b640 WARN             xvimagesink 
xvimagesink.c:1038:gst_xv_image_sink_show_frame:<xvimagesink0> could not map 
image
```
so this may be VAAPI-related?

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to totem in Ubuntu.
https://bugs.launchpad.net/bugs/1969512

Title:
  Totem unable to play video: "The specified movie could not be found"

Status in Totem:
  Unknown
Status in totem package in Ubuntu:
  Confirmed

Bug description:
  As part of our ISO testing for the Pi desktop, we attempt to play
  
https://archive.org/download/BigBuckBunny_124/Content/big_buck_bunny_720p_surround.mp4
  with the shipped totem video player. Unfortunately, on the current
  Jammy image, totem simply reports "The specified movie could not be
  found" when attempting to play the file (the exit code is 0, no other
  errors are reported at the command line).

  I've attempted to install a few gstreamer codecs, in case that
  might've been the issue (this was necessary on some older versions),
  but neither gstreamer1.0-plugins-ugly, nor gstreamer1.0-libav made any
  difference. Just to ensure the video file was intact and playable, I
  then installed vlc from the archive, which played the video happily.

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