[mythtv] new nVidia drivers and XvMC

John Patrick Poet john at BlueSkyTours.com
Sat Jul 10 21:22:54 EDT 2004

Daniel Thor Kristjansson wrote:

>]With XvMC and XvmcUsesTextures enabled, the reaction to OSD is about the
>]same.  The problem is, normal video has a constant studder to it.  The
>]studder is very consistant, and very fast.  Like a 30th/sec pause, jump,
>]30th/sec pause, jump, etc, etc, etc.  I suppose that it is very
>]consitant may be a good sign -- you might be able to tune it somehow to
>]fix the problem.
>Thanks. If we fix the studder, OSD may be better with this method,
>since it seems about the same now with the studder. The studder could be
>some kind of conflict between the OpenGL frame syncing and the use of
>the OpenGL pipeline for compositing. Maybe we wait for the same retrace
>-- Daniel

I tested your hypothesis.  I recompiled Myth with OpenGL disabled, and 
retested XvMC and XvmcUsesTextures.

Indeed, the consistant/fast studder went away.  OSD was as bad as ever, 


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