[mythtv] AVSync in master, Normal decoding, vga monitor and built-in audio analog stereo
John Pilkington
johnpilk222 at gmail.com
Mon Dec 9 18:46:19 UTC 2019
Hi Mark, Peter, Tim et al...
I'm now running b5edda1b06e, today's master, under el7 with hardware as
in the subject.
A recording that allows good sensory evaluation of a/v sync shows
noticeable drift that is not evident from the -v playback log.
The same recording plays with perfect a/v sync via the MythTV DLNA
server on my TV
This sample of the log shows a higher rate of frame-dropping than the
average for that recording. It suggests to me that the result of
dropping a frame may not be getting through to the sync filter input. I
first reported sync drift on 16 Nov, and IIRC I first noticed it a day
or two earlier. AVSync2 increment is 1 ms.
HTH,
John P
{{{
2019-12-09 18:19:49.635638 I Player(5): dropping frame to catch up,
lateness=39890 usec
2019-12-09 18:19:49.793242 I Player(5): dropping frame to catch up,
lateness=38490 usec
2019-12-09 18:19:49.832012 I Player(5): AV Sync: Audio ahead by 28 ms
2019-12-09 18:19:49.960731 I Player(5): dropping frame to catch up,
lateness=48985 usec
2019-12-09 18:19:49.988455 I Player(5): AV Sync: Audio ahead by 24 ms
2019-12-09 18:19:50.054778 I Player(5): AV Sync: Audio ahead by 24 ms
2019-12-09 18:19:50.116016 I Player(5): dropping frame to catch up,
lateness=47266 usec
2019-12-09 18:19:50.156979 I Player(5): AV Sync: Audio ahead by 33 ms
2019-12-09 18:19:50.216963 I Player(5): dropping frame to catch up,
lateness=30218 usec
2019-12-09 18:19:50.378709 I Player(5): dropping frame to catch up,
lateness=32955 usec
2019-12-09 18:19:50.542979 I Player(5): dropping frame to catch up,
lateness=38217 usec
2019-12-09 18:19:50.700887 I Player(5): dropping frame to catch up,
lateness=37134 usec
2019-12-09 18:19:50.861823 I Player(5): dropping frame to catch up,
lateness=39076 usec
2019-12-09 18:19:51.015041 I Player(5): dropping frame to catch up,
lateness=32288 usec
2019-12-09 18:19:51.172908 I Player(5): dropping frame to catch up,
lateness=31159 usec
2019-12-09 18:19:52.062073 I Player(5): AV Sync: Audio behind by 1 ms
2019-12-09 18:19:52.889115 I Player(5): AV Sync: Audio ahead by 24 ms
2019-12-09 18:19:52.921252 I Player(5): AV Sync: Audio ahead by 23 ms
2019-12-09 18:19:52.992925 I Player(5): FPS: 24.94 Mean: 40102
Std.Dev: 18410 CPUs: 91% 91%
2019-12-09 18:19:56.984290 I Player(5): FPS: 25.06 Mean: 39909
Std.Dev: 1221 CPUs: 81% 78%
2019-12-09 18:20:00.984315 I Player(5): FPS: 25.00 Mean: 39996
Std.Dev: 1200 CPUs: 80% 79%
2019-12-09 18:20:01.868788 I Player(5): dropping frame to catch up,
lateness=66031 usec
2019-12-09 18:20:01.901175 I Player(5): AV Sync: Audio ahead by 57 ms
2019-12-09 18:20:01.940942 I Player(5): AV Sync: Audio ahead by 39 ms
2019-12-09 18:20:01.977668 I Player(5): AV Sync: Audio ahead by 35 ms
2019-12-09 18:20:02.011394 I Player(5): AV Sync: Audio ahead by 29 ms
2019-12-09 18:20:02.045813 I Player(5): AV Sync: Audio ahead by 24 ms
)))
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