[FFmpeg-trac] #424(undetermined:new): A/V desync on transport stream

[FFmpeg]

#424: A/V desync on transport stream
-------------------------+--------------------------
  Reporter:  cehoyos     |      Owner:
      Type:  defect      |     Status:  new
  Priority:  normal      |  Component:  undetermined
   Version:  git-master  |   Keywords:
Blocked By:              |   Blocking:
Reproduced:  0           |   Analyzed:  0
-------------------------+--------------------------
 http://streams.videolan.org/issues/5203/ts720p_i_fr.ts

 The stream contains 720p60 H264 video and mp2 stereo sound. When
 transcoded with FFmpeg, the resulting file is non-interleaved, i.e. the 15
 seconds of sound come first (without picture). MPlayer's mpegts demuxer
 indicates that the stream does start with mostly identical timestamps for
 audio and video (but plays the video too fast).
 FFmpeg seems to believe that audio starts with timestamps ~130 and video
 with ~260.
 {{{
 $ ffmpeg -i ts720p_i_fr.ts -qscale 5 out.avi
 ffmpeg version N-32263-g3584b01, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Sep  1 2011 12:14:35 with gcc 4.5.3
   configuration: --cc='/usr/local/gcc-4.5.3/bin/gcc -m32'
   libavutil    51. 14. 0 / 51. 14. 0
   libavcodec   53. 12. 0 / 53. 12. 0
   libavformat  53. 10. 0 / 53. 10. 0
   libavdevice  53.  3. 0 / 53.  3. 0
   libavfilter   2. 37. 0 /  2. 37. 0
   libswscale    2.  0. 0 /  2.  0. 0
 [mpegts @ 0x8c963a0] Continuity Check Failed
 [mpegts @ 0x8c963a0] max_analyze_duration 5000000 reached at 5016000
 [mpegts @ 0x8c963a0] PES packet size mismatch
 Input #0, mpegts, from 'ts720p_i_fr.ts':
   Duration: 00:00:14.61, start: 130.272000, bitrate: 9237 kb/s
   Program 16
     Metadata:
       service_name    : PMR COBRA 1213
       service_provider: PMR
     Stream #0.0[0x109]: Video: h264 (High) ([27][0][0][0] / 0x001B),
 yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 90k tbn, 120 tbc
     Stream #0.1[0x103]: Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz,
 stereo, s16, 128 kb/s
 [buffer @ 0x8d86a00] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1
 sws_param:
 Incompatible sample format 's16' for codec 'ac3', auto-selecting format
 'flt'
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf53.10.0
     Stream #0.0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x720 [SAR
 1:1 DAR 16:9], q=2-31, 200 kb/s, 60 tbn, 60 tbc
     Stream #0.1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, flt,
 128 kb/s
 Stream mapping:
   Stream #0.0 -> #0.0 (h264 -> mpeg4)
   Stream #0.1 -> #0.1 (mp2 -> ac3)
 Press [q] to stop, [?] for help
 [mpegts @ 0x8c963a0] Continuity Check Failed
     Last message repeated 1 times   236kB time=00:00:14.27 bitrate=
 135.6kbits/s
 [mpegts @ 0x8c963a0] PES packet size mismatch
 [h264 @ 0x8c9b6e0] error while decoding MB 76 41, bytestream (-5)
 [h264 @ 0x8c9b6e0] concealing 293 DC, 293 AC, 293 MV errors
 frame=  852 fps= 31 q=5.0 Lsize=  177161kB time=00:00:14.62
 bitrate=99241.4kbits/s
 video:12002kB audio:228kB global headers:0kB muxing overhead 1348.534109%
 }}}

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/424>
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