[mythtv] Problem with XvMC

Chad masterclc at gmail.com
Sun Feb 12 03:59:50 UTC 2006


On 2/11/06, Jerry Rubinow <jerrymr at gmail.com> wrote:
> When I try using XvMC, I consistently get low frame rate and audio
> skips.  If I use libmpeg2, no problem.  mythfrontend -v playback gives
> repeating cycles of:
>
> prebuffering pause
> waiting for prebuffer
> video is 3-4 frames ahead of audio, skipping a/v wait
> video is 3-4 frames ahead of audio, skipping a/v wait
>
> Every so often the frame rate is reported at 56-58 fps.  Other
> settings are deinterlace bob, open gl vsync, realtime priority
> threads, extra audio buffering.
>
> Source is 1280x720 over firewire.  XvMC driver is 7676.  Myth version
> 8906M.  FX 5200 card.  CPU is low, around 50%.
>
> I'd like to try to understand possible causes of this and either give
> any helpful information to someone who might be able to fix it, or
> accept any helpful suggestions to try to further diagnose it myself.
>
> Thanks,
> -Jerry
> _______________________________________________

I turned off opengl-vsync and I think that did it for me.

Chad


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