[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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