[mythtv-users] Re: Playback problem on M10k - Unable to create XvMC Blocks

Axel Thimm Axel.Thimm at atrpms.net
Mon Jun 6 18:08:46 UTC 2005

On Mon, Jun 06, 2005 at 08:24:03AM -0700, Brian Webb wrote:
> Rob,
> I have a very similar setup, and I've been trying to get it working
> for weeks.  Currently I'm seeing the same message that you're seeing. 
> My latest theory is that the ATPMS myth rpms are not built with VIA
> XvMC compiled in.  The spec file appears to default it to compile
> without VIA XvMC, and I don't know how to tell how the binary rpms
> were compiled.  Can anybody confirm this?

ATrpms' rpms are build against XvMCW, part of the unichrome
project. This wrapper library allows you to chose the XvMC lib at
runtime, but you need to configure it properly.

> Brian
> On 6/6/05, Robert Coup <robert2 at coup.net.nz> wrote:
> > Hi All,
> > 
> > I have a newly setup MythTV system, running a PVR-150 on an EPIA M10000
> > system. After a couple of days of playing, everything prettymuch works,
> > except for hw-accelerated playback within mythtv.
> > 
> > If I try to watch live tv, or play back a recording, I get a "Unable to
> > initialize video" screen and logs that look like
> > (xvmc-problem.mythtv.log). I think the critical message is "Unable to
> > create XvMC Blocks". If I disable XvMC in myth's playback settings it
> > works (but its stressing the cpu too much so video skips).
> > 
> > I followed the excellent Myth(TV)ology guide by Jarod for the most part.
> > - Fedora Core 3, with kernel 2.6.10-1.770_FC3
> > - MythTV (0.18.1), DRM, ALSA, LIRC from ATrpms
> > - Terry Barnaby's RPMs for Unichrome (2005/04/30)
> > 
> > As far as I can tell, the via hw-decoder is working within xine (see
> > xine.vid.log) when I use -V xxmc to play a video.  Trying to open
> > /dev/video0 doesn't work within xine, but thats probably just my
> > ignorance (xine.tv.log)
> > 
> > If I use mplayer to watch TV [via ptune-ui & /dev/video0] it all works
> > (mplayer.log). Using mplayer/xvmc I get output like (mplayer.xvmc.log)
> > 
> > All these logs/configs are at:
> > http://homepages.ihug.co.nz/~coup/mythtv/060605/
> > Xorg.conf, dmesg output, /var/log/messages, and Xorg.log are all there too.

Axel.Thimm at ATrpms.net
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