[Bug 51579] [NVA8] Xv shows black image on ION chipset

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=51579

Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #30 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to comment #29)
> (In reply to comment #28)
> > (In reply to comment #27)
> > > (In reply to comment #26)
> > > > (In reply to comment #25)
> > > > > I am using kernel 3.14.1, mesa3d 10.1.1 and xorg-xf86-video-nouveau 1.0.10.
> > > > > 
> > > > > mplayer -vo xv = black
> > > > > mplayer -vo vdpau = black
> > > > > mplayer -vo gl = ok
> > > > > mplayer -vo gl2 = ok
> > > > 
> > > > Odd. VDPAU is a lot more like GL than like Xv.
> > > 
> > > Finally I could get Xv working, but vdpau is still not.
> > > 
> > > I had a problem with /dev/dri/* permissions, after fixing that, and changing
> > > mplayer's configuration as documented in various forums, its still not
> > > working.  But now I don't get a black screen, mplayer just stops after a few
> > > frames.
> > 
> > Does OpenGL work? What does glxinfo say? How about vdpauinfo? I'm not aware
> > of any hangs. (I assume you have the fw installed... if you didn't it
> > wouldn't hang, just put up lots of errors.) Have you tried multiple videos?
> > mplayer's output would be good too.
> 
> 
> Sorry, I was not very descriptive, I didn't mean that mplayer hangs, it just
> stopped after less than a second (no video, just a few audio frames).  So I
> guess it was decoding, but not able to output any video.
> 
> After spending some time, and thanks to your valuable pointers, it is more
> or less working.
> 
> I didn't even have the firmware before, I found out when running vdpauinfo.
> 
> Right now it works in about 10% of the cases.  For some files it doesn't
> work at all.  The ones that work break with some video filters (for example,
> -vf pp=de).  It this documented somewhere? I would like a list of what works
> and what doesn't.

vf + vdpau generally don't work. If you're looking for deinterlacing, the
latest mesa (10.2-rc1) should have support for it (via DEINTERLACE_TEMPORAL),
you can turn it on with "mplayer -vo vdpau:deint=3" IIRC. I do recall the black
bars being weird when you do that though, but that is an mplayer-only artifact,
apparently.

Note that VDPAU is Video Decoding + Presentation. So if you're seeing high cpu
usage, it's probably just doing the presentation and not the decoding (for
which you don't need firmware, btw). Make sure you're using the appropriate
codec (e.g. -vc ffh264vdpau). See
http://nouveau.freedesktop.org/wiki/VideoAcceleration/#usingvdpau

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