[mythtv-users] XvMC, i915, latest intel drivers

jb17bsome jb17bsome at bellsouth.net
Thu Apr 10 22:14:33 UTC 2008

On Thu, 10 Apr 2008 13:44:32 -0700
"Billy Macdonald" <billymacdonald at gmail.com> wrote:

> Hello,
>     I decided to give the latest Intel RC drivers a shot as they are
> supposed to incorporate XvMC.  I have been able to get them installed
> and was able to play back some mpeg using xine and xvmc.  So I'm
> pretty sure that the XvMC is working, at least somewhat.
>     When I configured mythtv to try to use XvMC it crashes on SD MPEG
> from QAM, and it falls back to xv playback in HD.  Xv playback does
> work properly, but the machine doesn't have the guts to play 1080i
> with 1080p output, which is my goal with XvMC.  Doing some debuging
> MythTV is determining the max XvMC as 720x576, but xvinfo report
> 1920x1088.  Not sure what that's about.  But until SD plays with XvMC
> no point in even trying HD :)
>     It looks to me like the myth code is deciding to use a textured
> surface and not the overlay surface.  Is this how it should work?  Any
> ideas on where I should troubleshoot?  I spent last night trying to
> dig through the code to understand how it all works, but I really
> don't understand the XvMC stuff very well.
>     I've attached my mythfrontend log and xvinfo if anyone feels like
> looking.
> Thanks,
> Billy
> PS
> fedora 8 i386
> Xorg 1.3 (i think, that's what the rpm installed is
> xorg-x11-server-Xorg-, but the latest Xorg releases
> are in the 7's so that confuses me.)
> xf86-video-intel-

The intel xvmc drivers only support up to 720x576 surfaces.  So, they
won't help for HD.  Sorry about that.  
Also, Xvinfo gives you information about Xv but not XvMC.     

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