[mythtv-users] Problems setting up XvMC

Greg 'groggy' Lehey grog at lemis.com
Thu Mar 29 00:38:39 UTC 2007

On Wednesday, 28 March 2007 at 11:35:13 -0400, Tom Lichti wrote:
> William Munson wrote:
>> Greg 'groggy' Lehey wrote:
>>> I'm having trouble getting XvMC to start up.  Here's what I've done so
>>> far:
>>> - downloaded the sources from
>>>   http://svn.mythtv.org/svn/branches/release-0-20-fixes/mythtv
>>> - configured with --enable-xvmc
>>> - set the preferred MPEG2 decoder to Standard XvMC (also extra audio
>>>   buffering, as recommended at
>>>   http://www.mythtv.org/wiki/index.php/XvMC).
>>> - Create a file /etc/X11/XvMCConfig with the content
>>>   'libXvMCNVIDIA_dynamic.so.1'
>>> When I try to view a recorded programme, I get the following messages:
>> Something is wrong with your install.


>> You should not have to manually create your library.

I didn't.

>> Try reinstalling your nvidia drivers.

They work fine with mplayer.  That sounds like a Microsoft "solution".

> It doesn't look like he's creating the library, he's creating a link
> to the library in the XvMCConfig file.

Yes.  This is as described in the wiki.  Comparing to what happened
before I had this file (exactly the same problem), I don't think it's
needed at all.

> On my perfectly working NVidia 6200 based frontend I have the following:
> - compile flags: --enable-xvmc --enable-opengl-vsync --disable-xvmc-pro
> --disable-xvmc-vld --disable-xvmcw

Why the --disables?  Does it work if you don't set them?

> - preferred encoder set the same as you
> - XvMCConfig contents:
> /usr/X11R6/lib/libXvMCNVIDIA_dynamic.so.1

That might stop it from searching in other places (it looks in
/usr/local somewhere first), so I'll probably set it once things are
running.  Since it's finding the library, this difference isn't the
cause of the problem.

> - /etc/X11/XF86Config needs to have the Device section use the
> "nvidia" driver, not the "nv" driver.

Yes, forgot to say that.  That's been done.

> There are other things that can be done to optimize XvMC, but that is
> pretty much the bare minimum.


Finger grog at lemis.com for PGP public key.
See complete headers for address and phone numbers.
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