[mythtv] mythtv-vid branch needs testing

Stuart Auchterlonie stuarta at squashedfrog.net
Mon Aug 13 11:00:56 UTC 2007



Doug Larrick wrote:
> 2007-08-12 15:38:39.042 NVP: Video is 8.17415 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.047 NVP: Video is 14.0766 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.051 NVP: Video is 18.2674 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.055 NVP: Video is 21.1824 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.059 NVP: Video is 23.1404 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.063 NVP: Video is 24.3808 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.067 NVP: Video is 25.083 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.071 NVP: Video is 25.3736 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.075 NVP: Video is 25.3634 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.079 NVP: Video is 25.1276 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.083 NVP: Video is 24.7304 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.087 NVP: Video is 24.2044 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.091 NVP: Video is 23.5818 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.096 NVP: Video is 22.8787 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.100 NVP: Video is 22.1233 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.104 NVP: Video is 21.3365 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.108 NVP: Video is 20.5103 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.112 NVP: Video is 19.6626 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.116 NVP: Video is 18.7907 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.120 NVP: Video is 17.9087 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.125 NVP: Video is 17.0269 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.129 NVP: Video is 16.1374 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.133 NVP: Video is 15.2421 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.137 NVP: Video is 14.3424 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.141 NVP: Video is 13.4317 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.145 NVP: Video is 12.5284 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.149 NVP: Video is 11.6227 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.153 NVP: Video is 10.7075 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.153 NVP: prebuffering pause
> 2007-08-12 15:38:39.153 NVP: Waiting for prebuffer.. 0 AAuLAAAAAAAAAAAAAAAAAAAAAAAAAAA
> 2007-08-12 15:38:39.215 NVP: Video is 9.7929 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.220 NVP: Video is 9.35869 frames behind audio (too slow), dropping frame to catch up.
> 'video_output' mean = '25094.77', std. dev. = '13922.21', fps = '39.85'
> 2007-08-12 15:38:39.224 NVP: Video is 8.81276 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.228 NVP: Video is 8.17516 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.232 NVP: Video is 7.46093 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.236 NVP: Video is 6.69711 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.240 NVP: Video is 5.89609 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.244 NVP: Video is 5.06719 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.248 NVP: Video is 4.21736 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.252 NVP: Video is 3.34396 frames behind audio (too slow), dropping frame to catch up.
> 2007-08-12 15:38:39.388 AO: dropping back audio_buffer_unused
> 2007-08-12 15:38:39.471 NVP: Video is 3.31214 frames ahead of audio,
>                         doubling video frame interval to slow down.
> 2007-08-12 15:38:39.504 AO: dropping back audio_buffer_unused
> 2007-08-12 15:38:39.521 NVP: Video is 4.17557 frames ahead of audio,
>                         doubling video frame interval to slow down.
> 2007-08-12 15:38:39.579 AO: dropping back audio_buffer_unused
> 2007-08-12 15:38:39.587 NVP: Video is 4.68153 frames ahead of audio,
>                         doubling video frame interval to slow down.
> 2007-08-12 15:38:39.620 AO: dropping back audio_buffer_unused
> 2007-08-12 15:38:39.654 NVP: Video is 4.7699 frames ahead of audio,
>                         doubling video frame interval to slow down.
> 2007-08-12 15:38:39.700 AO: dropping back audio_buffer_unused
> 2007-08-12 15:38:39.720 NVP: Video is 4.54508 frames ahead of audio,
>                         doubling video frame interval to slow down.
> 2007-08-12 15:38:39.759 AO: dropping back audio_buffer_unused
> 2007-08-12 15:38:39.787 NVP: Video is 4.09324 frames ahead of audio,
>                         doubling video frame interval to slow down.
> 2007-08-12 15:38:39.820 AO: dropping back audio_buffer_unused
> 2007-08-12 15:38:39.850 AO: dropping back audio_buffer_unused
> 2007-08-12 15:38:39.853 NVP: Video is 3.47116 frames ahead of audio,
>                         doubling video frame interval to slow down.


And that's an example of the A/V sync code overcompenstating which
causes stuttering of (alternately) audio & video. Although this is
a problem which exists in head as well.


Stuart


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