[mythtv-commits] Ticket #8875: av-sync lost

[MythTV]

#8875: av-sync lost
---------------------------------------------------+------------------------
     Reporter:  Markus Schulz <msc@…>              |       Owner:  janne     
         Type:  defect                             |      Status:  new       
     Priority:  minor                              |   Milestone:  unknown   
    Component:  MythTV - Video Playback            |     Version:  Trunk Head
     Severity:  medium                             |    Keywords:            
Ticket locked:  0                                  |  
---------------------------------------------------+------------------------
 i have several files where the a/v-sync is lost after a specific time.
 first it plays fine at 25fps, but after a while it plays at ~ 24fps.

 problem is repeatable and looks like the following:

 2010-09-06 20:18:13.545 Player(1): 3200 progressive frames seen.
 'video_output' mean = '39993.97', std. dev. = '8350.67', fps = '25.00'
 ....
 2010-09-06 20:19:17.760 Player(1): 4800 progressive frames seen.
 'video_output' mean = '39993.67', std. dev. = '8353.26', fps = '25.00'
 'video_output' mean = '39794.86', std. dev. = '8087.57', fps = '25.13'
 'video_output' mean = '40193.94', std. dev. = '8132.71', fps = '24.88'
 'video_output' mean = '39794.50', std. dev. = '8565.80', fps = '25.13'
 2010-09-06 20:19:33.758 Player(1): 5200 progressive frames seen.
 'video_output' mean = '39993.93', std. dev. = '8341.60', fps = '25.00'
 'video_output' mean = '40394.90', std. dev. = '7948.29', fps = '24.76'
 'video_output' mean = '40994.26', std. dev. = '7113.72', fps = '24.39'
 'video_output' mean = '41027.35', std. dev. = '7165.15', fps = '24.37'
 ....
 2010-09-06 20:20:06.495 Player(1): 6000 progressive frames seen.
 'video_output' mean = '40994.79', std. dev. = '7191.47', fps = '24.39'
 'video_output' mean = '40993.81', std. dev. = '6995.66', fps = '24.39'
 'video_output' mean = '40994.08', std. dev. = '7175.92', fps = '24.39'
 'video_output' mean = '40995.28', std. dev. = '7108.31', fps = '24.39'

 after a seek it works for a short while again but lost sync again.
 with mplayer the files are working.

 i've attached a log where i played it twice and after lost sync the second
 time i do a short forward seek.

 perhaps it has something todo with the following log-output (haven't
 checked all other async files for these message) a short time before it
 goes async the first time:

 2010-09-06 20:18:45.522 Player(1): 4000 progressive frames seen.
 'video_output' mean = '39994.54', std. dev. = '8318.48', fps = '25.00'
 2010-09-06 20:18:45.923 [mpeg4 @ 0xb6701fa0]frame skip 8
 2010-09-06 20:18:45.923 [mpeg4 @ 0xb6701fa0]frame skip 8
 2010-09-06 20:18:46.522 [mpeg4 @ 0xb6701fa0]frame skip 8
 2010-09-06 20:18:46.523 [mpeg4 @ 0xb6701fa0]frame skip 8



 with mplayer there was a similar message but no av-sync loss:
 VO: [xv] 624x352 => 624x352 Planar YV12
 [ASPECT] Warning: No suitable new res found!
 [mpeg4 @ 0x8a1e100]frame skip 8t: -0.056 4044/4044 10%  0%  2.2% 9 0
 [mpeg4 @ 0x8a1e100]frame skip 8t: -0.056 4060/4060 10%  0%  2.2% 9 0
 [mpeg4 @ 0x8a1e100]frame skip 8t: -0.056 28460/28460 10%  0%  2.3% 13 0
 [mpeg4 @ 0x8a1e100]frame skip 8t: -0.056 28461/28461 10%  0%  2.3% 13 0
 A:1240.5 V:1240.6 A-V: -0.136 ct: -0.074 31016/31016 10%  0%  2.3% 13 0

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/8875>
MythTV <http://www.mythtv.org/>
MythTV Media Center