[mythtv-users] Getting started with XvMC-OpenGL

Ben Lancaster lists at benlancaster.co.uk
Sun Nov 25 01:06:58 UTC 2007

Hi there,

This may well be a question for atrpms-users or mythtv-dev, but I  
thought I'd try here first. Forgive me if this isn't the appropriate  

I've recently upgraded to the latest mythtv-trunk from ATRPMs, and  
have fallen at the first hurdle with the new xvmc-opengl renderer.

My playback profile is set up to use it, however when playing LiveTV  
or recordings, mythfrontend.log says:

> VideoOutputXv: Desired video renderer 'xvmc-opengl' not available.  
> codec 'MPEG2 IDCT' makes 'xvmc-blit,' available, using 'xvmc-blit'  
> instead.

Could that be that the MythTV binaries I've installed haven't been  
compiled against the XvMCNVIDIA libraries? (as per http://www.mythtv.org/pipermail/mythtv-users/2007-August/190307.html)

I'm running nvidia-graphics100.14.23, kernel on an  
x86_64 with MythTV 0.21 (svn 14921).

 From what I gather, XvMC-OpenGL handles frame rate conversion better  
than xv/standard xvmc. My source is UK DVB (PAL-50), but my box is  
hooked up to my Samsung LCD via VGA (no DVI/HDMI on my model) that  
will only display 1280x720 at 60Hz. As such, you get a very slight  
frame jitter due to the frame duplication to make the 50Hz  
deinterlaced source play back at 60Hz. Will XvMC-OpenGL offer an  



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