[mythtv] audio waiting for buffer to fill

[Mark Spieth]

see my last ticket and patch (today's). it explains everything.
cheers
mark

> 99% of the time my system works fine. However everynow and then I get a
> recording (in this case an MPEG4 transcoded from DVB MPEG2) which seems to
> have a glitch or something not quite right. From then on in the recording
I
> see the messages below in the log. At the same time the audio starts to
> "stutter" and sync seems to get lost. This coincides with the "A/V
> diverged..." messages. The A/V diverged messages seem to start just before
> the buffer ones.
>
> If I Ctrl-Z to make mythfrontend stop and restart it will be fine for a
> second or two and then go back to stuttering. The A/V diverged signals
seem
> to always be happening from that point on in the file though..
>
> I'm not sure where to look personally. I can provide a download of the
file
> for a developer however in this current file the stuttering doesn't start
> until 15 minutes in. I only have 128kbps upstream so I'm not sure how
> someone could easily get to the faulty part of the file. If someone wants
> the file let me know.
>
> This is all with latest CVS (well SVN really) as of yesterday.
>
> Does anyone know what might be happening that could make a recording cause
> audio buffering type problems happen?
>
> 2005-07-17 18:57:02.457 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.457 Broadcasting free space avail
> 2005-07-17 18:57:02.463 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.463 Broadcasting free space avail
> 2005-07-17 18:57:02.468 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.468 Broadcasting free space avail
> 2005-07-17 18:57:02.474 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.474 Broadcasting free space avail
> 2005-07-17 18:57:02.483 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.483 Broadcasting free space avail
> 2005-07-17 18:57:02.488 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.488 Broadcasting free space avail
> 2005-07-17 18:57:02.493 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.494 Broadcasting free space avail
> 2005-07-17 18:57:02.500 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.500 Broadcasting free space avail
> 2005-07-17 18:57:02.505 audio waiting for buffer to fill: have 3584 want
> 4096
> 2005-07-17 18:57:02.505 Broadcasting free space avail
> 2005-07-17 18:57:02.517 A/V diverged by 30 frames, extending frame to keep
> audio in sync
> 2005-07-17 18:57:02.521 A/V diverged by -30 frames, dropping frame to keep
> audio in sync
> 2005-07-17 18:57:02.525 A/V diverged by -30 frames, dropping frame to keep
> audio in sync
>
>


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