[mythtv-users] libXvMCNVIDIA for HD Playback

Nick Rout nick.rout at gmail.com
Sat Apr 4 00:41:24 UTC 2009

On Sat, Apr 4, 2009 at 1:39 PM, Nick Rout <nick.rout at gmail.com> wrote:
> On Sat, Apr 4, 2009 at 12:52 PM, Scott <scott at web-ster.com> wrote:
>> Nick Rout wrote:
>> On Sat, Apr 4, 2009 at 9:41 AM, Scott <scott at web-ster.com> wrote:
>> Thanks for the reply. I did run the frontend in a terminal and it did throw
>> h264 warnings about the frame size and saying that it's throwing frames out.
>> AFAIK Xvmc will not help with h264 encoded material.
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>> Thanks Nick, I was kind of wondering that myself. Below is some of what I
>> see in my log (i'm sifting through it off and on today). There's usually a
>> few lines of these errors off and on, there's definitely large blocks on the
>> last error that seem to continue throughout playing the file.
>> [h264 @ 0x138db00]decode_slice_header error
>> [h264 @ 0xb9bb00]mmco: unref short failure
>> [h264 @ 0xb9bb00]number of reference frames exceeds max (probably corrupt
>> input), discarding one
>> I don't believe that the issue is corrupt data because I can play the HD
>> files just fine in other players (Xine and Mplayer specifically, I need to
>> try VLC yet). Has anyone ran into these errors before and more importantly
>> is there a fix?
> Looks similar to errors you get with broadcast h264, some of those
> streams are not handled yet by myth-0.21 because ffmpeg (which myth
> uses an internal version of) has only recently started working with
> this stuff.
> you could try paul kendall's ppa repo [1], which has a patched version
> of mythtv which will handle many of these errors. jean-yves avenard's
> patched mythtv-0.21 also handles these streams, but you won't need his
> version unless you have a vdpau capable card, which you haven't.
> [1] https://launchpad.net/~paul-kcbbs/+archive/ppa
> PS just realised pointing you to these repos is assuming you are using
> mythbuntu, dunno whether there are equivalents for other distros.

PPS HD h264 is very processor intensive to decode. What cpu do you
have? Have you considered getting a vdpau capable video card?

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