[mythtv-users] XvMC simply not compatible with some video?

Daniel Kristjansson danielk at cuymedia.net
Fri Feb 2 17:48:50 UTC 2007

On Fri, 2007-02-02 at 11:38 -0600, matthew.garman at gmail.com wrote:

> I only recently realized that XvMC only works with MPEG2 (via
> testing XvMC with mplayer).  It never occurred to me that some video
> might not broadcast MPEG2.
> If we could create a table of channels and their broadcast format,
> and put it on the Wiki, it might save some folks a lot of
> hair-pulling!

All ATSC channels use MPEG-2.

At the moment the BBC is the only broadcaster using MPEG-4 AVC,
and so far it is only testing this on a limited basis.

> As a side note, going forward, I can see where it would be nice if
> graphics cards supported XvMC for more "modern" video codecs, e.g.,
> h264, divx, etc.

Yes it would. Tell your favorite graphics card manufacturer
that you would pay extra for this feature. They are for the
most part very customer driven. They would need to pay licensing
fees for every graphics card shipped with this feature, so
they won't do it unless they perceive that people are willing
to pay extra for it.

-- Daniel

More information about the mythtv-users mailing list