[mythtvnz] VDPAU Results

[Steven Ellis]

On Sat, April 25, 2009 1:45 am, Jean-Yves Avenard wrote:
> Hi
>
> 2009/4/6 James Booth <james at booths.net.nz>:
>> On all resolutions, except 1080i, playback seems pretty solid. I get the
>> very occasional flicker or audio pause, more so with 720p. 1080i however
>> is
>> not so solid - regular audio drop-outs and sync errors, moderately
>> regular
>> video stutters. Typical log message is "2009-04-06 10:53:56.742 Audio
>> -97 ms
>> behind video but already 75 video frames queued. AV-Sync might be
>> broken." I
>> have "Aggresive sound card buffering" unchecked and "Extra audio
>> buffering"
>> checked.
>
> Investigating another playback problem ; I believe I have identified
> the problem...
>
> Can you try my 20405-2 patches and let me know if 1080i plays any better ?
>
> Thanks
> Jean-Yves

Jean-Yves - You are a star. Just trying your latest build under 8.10 with
NVIDIA-Linux-x86-185.19 and the TV3 1080i feed is now rock solid. No
issues with the 720p streams either.

I've also been through all of the 576i channels, and all of the active
channels work fine, but two of the channels (Parliament and Maori) have a
test card up at this time on a Sunday and produce a lot of audio errors.

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.

The video stream is basically a low bitrate still image with a HE-AAC
audio stream behind it. I'll try and grab a sample for further analysis.

What needed changing for your recent build?

Also is there a source package I could pull I'd like to try and fix some
of the MHEG-5 issues we have with freeview|HD and I'd like to use your
build as the starting point.

Thanks for all your hard work

Steve

--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email   - steven at openmedia.co.nz
website - http://www.openmedia.co.nz