[mythtv] XvMC studdering

Todd Ignasiak ignasiak at gmail.com
Tue Jan 17 18:01:40 UTC 2006

On 1/17/06, Dave Just <justifiably at cwazy.co.uk> wrote:
> Could you (or anyone else who has managed to get it working well)
> share the settings that you use: inc extra audio buffer, aggressive
> sound card buffering and esp the RingBuffer size compared with RAM on
> the machine?  I'm still finding it hard to get completely smooth
> playback on my system (XP 1900, GeForce MX 440, FC4/2.6.14, NV 7676).

My Playback settings are:

Deinterlace Playback ENABLED, set to "Bob (2x framerate)"
Preferred MPEG2 Decoder: Standard XvMC
OpenGL Vertical Sync for timing DISABLED (this caused problems for me when
enabled with a previous SVN release.  I have not tried it with this release)
Realtime Priority threads ENABLED
Use video as timebase ENABLED
Extra audio buffering ENABLED

>   - Dave
> On 16 Jan 2006, at 20:39, Todd Ignasiak wrote:
> > I hadn't updated my SVN version in a few weeks, and had turned off
> > XvMC because of a few glitches.     So, I updated it yesterday and
> > turned XvMC back on.    My initial tests were excellent,  very good
> > XvMC playback, no stuttering, perfect playback on 1080i and 720p
> > material.  (In the past, I had been getting some stuttering on 720p
> > when the OSD came up).
> >
> > Maybe some of the changes that Kevin mentioned have helped
> > this..    My system is: Gentoo x86-64, kernel 2.6.14, NVidia driver
> > 7676, FX5200 video card,  latest MythTV svn as of last night,
> > HD3000 and FusionHDTV3 QAM cards.
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