[mythtv] Re: Another data point for the new XvMC stuff

[Mark Frey]

> 
> > Okay, looks like things aren't quite ideal for me yet. With the sync to
> > vblank off I get unpleasant tearing on playback. Should having sync to
> > vblank on be causing problems with XvMC?
> 
> Sync to vblank causing problems isn't something I've heard of. Can you
> toggle OpenGL VSync (you may need to recompile with it enabled), and
> tell me if it makes any difference.

<snip>

> > Extra Audio Buffering is on.
> > dmesg output is fine, no complaints there.
> > I guess I can roll back to 6629, but 7167 actually seem to work well for
> > me. I will try tomorrow and see if it makes a difference.
> 
> Try the OGL VSync toggle first. If that prevents the tearing I can
> disable sync to vblank when VSync is being used, and put some help text
> along with XvMC suggesting the use of OGL VSync.

Hmmm, I am using OGL VSync. I don't have any tearing with plain Xv, but
definite tearing in the upper quarter of the screen with XvMC while
watching HD.

-Mark
-- 
  Mark Frey
  markfrey at fastmail.fm