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

Dirk Aust dirk_aust at gmx.de
Mon Jun 6 15:43:16 UTC 2005

I'm using a very similar HW base, also an M10000 but with PVR-250, it's a 
little tricky to get the MPEG2 HW accel working, first I applied a patch to 
Xorg 6.8.1 and compiled it newly, after this a used a special kernel with the 
epia2 patch applied and finally, I compile Myth on my own with XvMC VLD 

You can see this if you go the playback settings if there is a checkbox with 
"XvMC VLD" available.


Am Montag, 6. Juni 2005 17:24 schrieb Brian Webb:
> 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?
> 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.

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