[mythtv-users] vdpau and .mp4 playback

[Gerald Brandt]

Hi,

----- Original Message -----
> From: "Jean-Yves Avenard" <jyavenard at gmail.com>
> To: "Discussion about MythTV" <mythtv-users at mythtv.org>
> Sent: Saturday, November 27, 2010 7:26:14 PM
> Subject: Re: [mythtv-users] vdpau and .mp4 playback
> Hi
> 
> On 28 November 2010 11:29, Gerald Brandt <gbr at majentis.com> wrote:
> > Hi,
> >
> > I use MythBuntu 10.10 running .23 fixes.
> >
> > Lately, I've been finding H264 .mkv and .mp4 files that won't
> > (can't?) use vdpau acceleration. From my brief looks at the files,
> > it all looks OK, h264 video at 1280 x 5xx (528 or 544), 24 FPS, and
> > MPEG-4 ACC or Dolby AC-3 audio. I really can't see a difference
> > between one that works, and one that doesn't.
> 
> What H264 encoding profile are they using ?
> 
> VDPAU only supports supports some h264's profiles (4:2:0 profiles such
> as baseline/main/high). Things like lossless h264 or High 4:4:4
> Predictive Profile aren't supported by VDPAU.
> 
> But it's been a while since I looked into VDPAU (over a year now) this
> may have changed by now.
> 
> Regarding what Robert said, the resolutions restrictions also differ
> according to the nvidia cards you are using

Good question.  What's the easiest way to find out?

Gerald