[mythtv-users] VDPAU poor playback - stuttering with mythvideo and internal player

Greg Oliver oliver.greg at gmail.com
Wed Jan 20 17:35:54 UTC 2010


On Tue, Jan 19, 2010 at 10:33 AM, Phil Wild <philwild at gmail.com> wrote:
> 2010/1/19 Phil Wild <philwild at gmail.com>:
>>
> Hi all,
>
> WHen I play this video in mythtv, the cpu goes up to 114% for
> mythfrontend. This is not what I would expect if vdpau is doing what
> it is supposed to do...
>
> I tried the vdpaubuffersize setting and it made no difference. I also
> set it down to 20 to see if it made a difference and it didn't
>
> I installed mplayer and vlc and both also struggled to play this video file.
>
> I have also tested my NFS performance (file is on an NFS server) and
> achieve close to 300mbit between the hosts. Just to be sure, I also
> played the file from a local hard drive on my frontend and still
> exoperienced poor playback.
>
> vdpau does not seem to be able to play this video file.
>
> I am now in the process of transcoding the file with ffmpeg.
>

If I transcode it into 4.0 AVC instead of 5.1, vdpau plays it
perfect...  Same audio format as the original..  Same video options as
well (well all of the same shared by both I guess)..

-Greg


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