[FFmpeg-trac] #6910(undetermined:new): Broken audio timestamps with Hikvision recording

FFmpeg trac at avcodec.org
Tue Dec 12 15:04:15 EET 2017


#6910: Broken audio timestamps with Hikvision recording
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:  git-       |  undetermined
  master                             |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 http://ffmpeg.org/pipermail/ffmpeg-user/2017-December/038232.html
 A two-minute sample was uploaded, video works correctly, audio has
 completely broken timestamps (plays for exactly two minutes).
 {{{
 $ ffmpeg -i 1.mp4 -vn -f null -
 ffmpeg version N-89467-g0e52602 Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 6.3.0 (GCC)
   configuration: --enable-gpl
   libavutil      56.  5.100 / 56.  5.100
   libavcodec     58.  6.103 / 58.  6.103
   libavformat    58.  3.100 / 58.  3.100
   libavdevice    58.  0.100 / 58.  0.100
   libavfilter     7.  7.100 /  7.  7.100
   libswscale      5.  0.101 /  5.  0.101
   libswresample   3.  0.101 /  3.  0.101
   libpostproc    55.  0.100 / 55.  0.100
 Input #0, mpeg, from '1.mp4':
   Duration: 02:07:57.93, start: 789.820800, bitrate: 9 kb/s
     Stream #0:0[0x1e0]: Video: h264 (Baseline), yuv420p(progressive),
 1920x1080, 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #0:1[0x1c0]: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
 Stream mapping:
   Stream #0:1 -> #0:0 (pcm_mulaw (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf58.3.100
     Stream #0:0: Audio: pcm_s16le, 8000 Hz, mono, s16, 128 kb/s
     Metadata:
       encoder         : Lavc58.6.103 pcm_s16le
 size=N/A time=02:07:57.92 bitrate=N/A speed=2.33e+05x
 video:0kB audio:1875kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6910>
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