[mythtv-users] My Perennial Problems with XvMC

Gregory Keeney gkeeney at panasas.com
Thu Sep 14 18:52:23 UTC 2006

John Welch wrote:
> Add me to the list of people having problems with HD playback.  In
> fact I was just in the process of compiling information so that I
> could post about this very problem.  My frontend system has an AMD
> 3100+ processor, with 1 GB of memory, and an FX5200 video card.
> What's strange for me is that when I first setup Myth earlier this
> year I was able playback HD.  I did have some issues, but overall it
> was acceptable.  Then I didn't do much with HD throughout the summer.
> Now it has regressed to where I can't watch HD reliably anymore.
> Upgrading to .20 seems to have made things worse, but I was having the
> problems before I upgraded.  I've played around with a bunch of the
> settings (with and without XvMC, with and without audio buffering,
> etc.) but haven't found the right combination (if there is one).  With
> different setting I get different results; choppy playback, slow
> playback, etc., but none are acceptable.
What was the XvMC libs reported by ./configure?

I have:
    XvMC libs        -lXvMCW

Which is the wrapper that loads the library specified by /etc/X11/XvMCConfig

With MythTV 0.20 (or recent svn), this works with the Nvidia FX 5200.

Not sure if this helps, but I recall things *not* working when "XvMC 
libs        -lXvMC".

I am running Nvidia's 8762 release on top of a 2.6.16 kernel.

Also, though I suspect everyone has done this, double check that you 
have set the frontend to use XvMC (Television Playback Settings). It is 
easy to forget to turn this back on when experimenting.

Gregory Keeney

More information about the mythtv-users mailing list