Playing videos in VMs lags

User Support
1

When I play videos in VMs, they are barely watchable due to extreme lagging. I’ve tried different media players:

  • Parole, which can’t play MP4 files because it lacks the necessary codecs

  • VLC, which doesn’t display a picture

  • mpv, which lags significantly

I tested this on Fedora 43, Fedora 44 XFCE and Debian 13 templates (in Debian 13, VLC shows a picture but is also very laggy). I also tried playing WebM videos, which worked better but still have performance issues.

Is there a way to fix this? On a different laptop which also runs Qubes, videos play fine without any performance issue, however libreoffice documents cause tiny performance issues.

2

Export templates and app qubes from working to non-working machine and try and tell. Both for videos and libreoffice.

3

.

4

Unfortunately it is the same result.

5

I could offer him whole vlcrc file that works for me, but I am sure that wouldn’t help too.
vlcrc.log (95.7 KB)

P.S. rename vlcrc.log to vlcrc only. I had to do the hack to be able to upload the file.