[mythtv-users] vdpau and .mp4 playback

[Nick Rout]

On Sun, Nov 28, 2010 at 2:28 PM, Gerald Brandt <gbr at majentis.com> wrote:
> 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

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