(In reply to Thomas DEBESSE from comment #8)
> OK, so, about the hang itself, it looks like related to VDPAU if I read fine
> these lines (see after), may I create a special thread for this one or do we
> talk about that in the current thread (and have I to edit the title) ?

Changing the topic of this one should be fine.

And yes, that sounds like some kind of video playback problem, but it's not
necessary VDPAU related.

> Nov 24 22:58:18 gollum gnome-session[3720]: [00007f13300cd7c0] deinterlace
> filter error: unsupported chroma VDV0

Where is this error message coming from? Is that reproducible? Does pure VDPAU
playback using mpv works.

The problem seems to be that something tries to use a deinterlace filter, most
likely using OpenGL instead of VDPAU and that filter is what is causing the
crash.