[Bug 68792] Problems during playback of h264 files using UVD and VLC on AMD E-350 CPU

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68792

--- Comment #11 from Grigori Goronzy <greg at chown.ath.cx> ---
(In reply to comment #8)
> (In reply to comment #7)
> > (In reply to comment #6)
> > > (In reply to comment #5)
> > > > You have to enable VDPAU output as well.
> > > 
> > > Sorry, but where and how?
> > > In VLC?
> > > *.conf file?
> > >
> > 
> > In preferences go to the "Video" tab and select VDPAU from the list of
> > outputs.
> 
> I didn't have VDPAU, there.
> That's why I'm asking.
> Have a look at my attachments.
> VDPAU is only enable under "Input/Codecs".
> Is my VLC version missing something?
>

Yes, you do not have VDPAU video output support enabled in your VLC build. You
may need a newer version (>= 0.6) of libvdpau and recent VLC master.

> 
> With that I get only every several seconds one frame but good audio.
> 
> lib/gallium> vlc /data/Filme/Serenity\ -\ HD\ DVD\ Trailer.mp4
> VLC media player 2.1.0 Rincewind (revision 2.1.0-0-gedd8835)
> [0x8a94290] main interface error: no suitable interface module
> [0x89973f8] main libvlc error: interface "globalhotkeys,none" initialization
> failed
> [0x89973f8] main libvlc: VLC wird mit dem Standard-Interface ausgeführt.
> Benutzen Sie 'cvlc', um VLC ohne Interface zu verwenden.
> [0xb4a306c0] avcodec decoder: Using G3DVL VDPAU Driver Shared Library
> version 1.0 for hardware decoding.
> [0xb4a306c0] avcodec decoder: Using G3DVL VDPAU Driver Shared Library
> version 1.0 for hardware decoding.
> [0xb4a402f0] main vout display error: Failed to resize display
> [0xb4a306c0] avcodec decoder error: more than 5 seconds of late video ->
> dropping frame (computer too slow ?)
> [0xb4a306c0] avcodec decoder error: more than 5 seconds of late video ->
> dropping frame (computer too slow ?)
> [0xb4a306c0] avcodec decoder error: more than 5 seconds of late video ->
> dropping frame (computer too slow ?)

Please try again with latest Mesa, updated patches have been committed. I can
play high-bitrate 1080p files without any framedrops and reasonable CPU load
(~40-50%) on an E-450 now, even without VDPAU video output, which means that
the inefficient readback path is used. With VDPAU video output enabled on VLC
master, CPU usage is much lower.

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