[mythtv-commits] Ticket #12010: mythcommflag --rebuild does not re-create good seektables with h264 recordings

[MythTV]

#12010: mythcommflag --rebuild does not re-create good seektables with h264
recordings
-----------------------------------------+-----------------------------
 Reporter:  J.Pilk@…                     |          Owner:  pbennett
     Type:  Bug Report - General         |         Status:  assigned
 Priority:  minor                        |      Milestone:  unknown
Component:  MythTV - Video Decoding      |        Version:  Master Head
 Severity:  medium                       |     Resolution:
 Keywords:  mythcommflag --rebuild h264  |  Ticket locked:  0
-----------------------------------------+-----------------------------

Comment (by J.Pilk@…):

 I'm making fitful progress with this, and the 7-frame mismatch seems
 unexpected but not critical.  Here's a -v playback frontend log, as a
 video, over an ad-break.  The output video editpoints were well placed;
 but some other breaks still create and recover from bigger slippages, and
 playback may skip frames that the editor reveals.  Playback still isn't as
 smooth as that of the original recording with the same cutlist.  Testing
 takes time, too...

 All the cutting is done after a first run with no cutlist.  I don't know
 if this will remain a necessity.

 {{{
 ITV HD 21605_20180101185800_8793.ts    00:34:47.6000     2087600 ms
 computed output position
 2018-04-07 22:05:27.401265 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 319 CPUs: 5% 4%
 2018-04-07 22:05:31.401270 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 725 CPUs: 4% 5%
 2018-04-07 22:05:35.401306 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 1250 CPUs: 5% 5%
 2018-04-07 22:05:36.921022 I  Player(9): 3600 progressive frames seen.
 2018-04-07 22:05:39.401285 I  Player(9): FPS:   25.00 Mean: 39994 Std.Dev:
 1819 CPUs: 5% 4%
 2018-04-07 22:05:43.401266 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 167 CPUs: 5% 5%
 2018-04-07 22:05:45.211071 I  Player(9): Video is 3.09232 frames ahead of
 audio,
                         doubling video frame interval to slow down.
 2018-04-07 22:05:45.303021 I  Player(9): Video is 3.45047 frames ahead of
 audio,
                         doubling video frame interval to slow down.
 2018-04-07 22:05:45.371063 I  Player(9): Video is 3.3941 frames ahead of
 audio,
                         doubling video frame interval to slow down.
 2018-04-07 22:05:45.451077 I  Player(9): Video is 3.17683 frames ahead of
 audio,
                         doubling video frame interval to slow down.
 2018-04-07 22:05:47.667918 I  Player(9): FPS:   23.44 Mean: 42661 Std.Dev:
 9369 CPUs: 5% 4%
 2018-04-07 22:05:51.667948 I  Player(9): FPS:   25.00 Mean: 39994 Std.Dev:
 767 CPUs: 5% 4%
 2018-04-07 22:05:53.187689 I  Player(9): 4000 progressive frames seen.
 2018-04-07 22:05:55.667919 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 484 CPUs: 3% 3%
 2018-04-07 22:05:59.667945 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 647 CPUs: 5% 5%
 2018-04-07 22:06:03.667950 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 1384 CPUs: 8% 4%
 2018-04-07 22:06:07.667937 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 1823 CPUs: 3% 3%
 2018-04-07 22:06:09.187687 I  Player(9): 4400 progressive frames seen.
 2018-04-07 22:06:11.667947 I  Player(9): FPS:   25.00 Mean: 39995 Std.Dev:
 715 CPUs: 4% 4%

 }}}

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Ticket URL: <https://code.mythtv.org/trac/ticket/12010#comment:21>
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