[FFmpeg-trac] #933(undetermined:new): A/V desynch when transcoding A/V files with timestamps non starting from 0 with -copyts

[FFmpeg]

#933: A/V desynch when transcoding A/V files with timestamps non starting from 0
with -copyts
-------------------------------------+-------------------------------------
             Reporter:  saste        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  timestamp    |               Resolution:
  desynch mpegts                     |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by saste):

 Replying to [comment:2 cehoyos]:
 > Please provide the complete, uncut console output together with your
 command line.

 Not that I think that the console output gives more hints, but here it is:
 {{{
 $ ffmpeg -copyts -vsync 0 -an -i columbia-intro.ts -acodec libfaac -y
 columbia-intro.out.ts -nostats
 ffmpeg version N-37013-ge7321ef Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Jan 22 2012 17:39:37 with gcc 4.6.1
   configuration: --enable-version3 --enable-avconv --prefix=/home/stefano
 --enable-librtmp --enable-libx264 --enable-libfaac --disable-shared
 --enable-static --enable-debug=3 --enable-pthreads --enable-libvorbis
 --enable-gpl --enable-nonfree --enable-libmp3lame --enable-libtheora
 --enable-gpl --enable-x11grab --enable-frei0r --disable-optimizations
 --disable-mmx --enable-libfreetype --enable-libopencv --enable-
 libopencore-amrnb --enable-libopencore-amrnb --enable-libass
   libavutil      51. 34.101 / 51. 34.101
   libavcodec     53. 57.105 / 53. 57.105
   libavformat    53. 30.100 / 53. 30.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 59.101 /  2. 59.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  6.100 /  0.  6.100
   libpostproc    52.  0.100 / 52.  0.100
 [mpegts @ 0x1a5dd80] max_analyze_duration 5000000 reached at 5000000
 Input #0, mpegts, from 'columbia-intro.ts':
   Duration: 00:00:08.03, start: 12.928000, bitrate: 1005 kb/s
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
     Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B),
 yuv420p, 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #0:1[0x101]: Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz,
 5.1, s16, 176 kb/s
     Stream #0:2[0x102]: Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz,
 5.1, s16, 12 kb/s
 [buffer @ 0x1a641d0] w:720 h:576 pixfmt:yuv420p tb:1/1000000 sar:64/45
 sws_param:
 [mpegts @ 0x1a633d0] muxrate VBR, pcr every 2 pkts, sdt every 200, pat/pmt
 every 40 pkts
 Output #0, mpegts, to 'columbia-intro.out.ts':
   Metadata:
     encoder         : Lavf53.30.100
     Stream #0:0: Video: mpeg2video, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
 q=2-31, 200 kb/s, 90k tbn, 25 tbc
     Stream #0:1: Audio: aac, 48000 Hz, 5.1, s16, 128 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 -> mpeg2video)
   Stream #0:1 -> #0:1 (aac -> libfaac)
 Press [q] to stop, [?] for help
 frame=  200 fps= 44 q=31.0 Lsize=     717kB time=00:00:00.00 bitrate=
 0.0kbits/s
 video:642kB audio:0kB global headers:0kB muxing overhead 11.598826%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/933#comment:3>
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