https://bugs.freedesktop.org/show_bug.cgi?id=111213

--- Comment #16 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to KJ Liew from comment #15)
> (In reply to Ilia Mirkin from comment #14)
> > > $ VDPAU_DRIVER=nouveau mpv --hwdec=vdpau -vo=opengl /path/to/MP4 
> > > Driver 'opengl' has been replaced with 'gpu'!
> > > Playing: /path/to/MP4
> > >  (+) Video --vid=1 (*) (h264 1280x720 23.976fps)
> > >  (+) Audio --aid=1 --alang=eng (*) (aac 2ch 44100Hz)
> > > Cannot load libcuda.so.1
> > > Using hardware decoding (vdpau).
> > > VO: [gpu] 1280x720 vdpau[yuv420p]
> > > AO: [pulse] 44100Hz stereo 2ch float
> > > AV: 00:00:12 / 00:02:03 (10%) A-V:  0.000
> > 
> > mpv doesn't seem to work, yeah. FWIW I'd expect -vo vdpau to work (not -vo
> > opengl,
> 
> It works for r600 and radeonsi on my 2 other laptops using mpv and the same
> command-line using -vo gpu. I think it also works with Geforce9300/Nouveau
> but need to double check again.

Apologies - I should have clarified I was talking about nouveau specifically.
The issue is multi-threaded submission, which mpv (at least at one point)
attempted to do with hwdec + video output in separate threads.

mpv -vo vdpau --hwdec vdpau should work. But it doesn't, at least not in my
testing. Hits an assert in libdrm about rather incorrect usage. Haven't
investigated it though.

Like I said, this works fine with mplayer. This is my preferred player, so I
tend not to go much further.

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