[mythtvnz] VDPAU AV-Sync Errors

[Jean-Yves Avenard]

Hi

Try my latest patches (20405-5) let me know how it works for you

Jean-Yves

2009/4/26 Steven Ellis <steven at openmedia.co.nz>:
>
> On 26/04/2009, at 5:52 PM, Jean-Yves Avenard wrote:
>
> Ok
>
> I have your two videos playing properly now ...
>
> It was just a matter of increasing the video buffer again.
>
> the downside in doing so is that videos playback takes slightly longer to
> start.
>
> In those two streams you've sent, there's up to 850ms delay between
> audio and video ! that's huge
>
> Wow...
> Might have a word with the guys at freeview about this. Their spec does
> require quite a bit of buffer on the STBs to handle this sort of thing, but
> I wasn't expecting this sort of delay.
> Thanks for tracking down the problem.
> Steve
>
>
> Jean-Yves
>
> 2009/4/26 Steven Ellis <steven at openmedia.co.nz>:
>
>
> Well I've been testing the latest builds and for the most part stability
>
> is greatly improved on the VDPAU support for freeview|HD.
>
> I did have a reproducible issue with Maori TV and Parliament this morning
>
> when they are displaying their testcard with an audio stream. Samples are
>
> available at
>
> http://www.mythtv.co.nz/mythtv/dtt/video/12005_20090426120148.mpg
>
> http://www.mythtv.co.nz/mythtv/dtt/video/12022_20090426120606.mpg
>
> These play without issue in a recent build of mplayer but if I use MythTV
>
> I get the following output and start to get jumpy playback
>
> 2009-04-26 11:37:00.408 Audio 29 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.449 Audio 62 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.487 Audio 102 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.527 Audio 142 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.586 Audio 33 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.626 Audio 66 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.665 Audio 98 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.705 Audio 131 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.745 Audio 23 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.786 Audio 55 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.826 Audio 88 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.866 Audio 120 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> 2009-04-26 11:37:00.906 Audio 12 ms behind video but already 100 video
>
> frames queued. AV-Sync might be broken.
>
> I'd appreciate it if anyone could grab these samples and try them on their
>
> Myth environment to make sure it isn't a configuration issue. The sample
>
> files are around 3.5 MB each.
>
> Steve
>
> --------------------------------------------
>
> Steven Ellis - Technical Director
>
> OpenMedia Limited - The Home of myPVR
>
> email   - steven at openmedia.co.nz
>
> website - http://www.openmedia.co.nz
>
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> Steven Ellis - Technical Director
> OpenMedia Limited
> email   - steven at openmedia.co.nz
> website - http://www.openmedia.co.nz
>
>
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