[FFmpeg-trac] #4182(undetermined:new): Unknown 16kb/s audio in Hikvision MPEG-PS recording
FFmpeg
trac at avcodec.org
Fri Dec 12 19:26:13 CET 2014
#4182: Unknown 16kb/s audio in Hikvision MPEG-PS recording
-------------------------------------+-------------------------------------
Reporter: cehoyos | Owner:
Type: | Status: new
enhancement | Component:
Priority: wish | undetermined
Version: git- | Keywords: mpegps
master | Blocking:
Blocked By: | Analyzed by developer: 0
Reproduced by developer: 0 |
-------------------------------------+-------------------------------------
User sabkaraja uploaded a Hikvision recording for which H.264 video can be
decoded with FFmpeg, audio fails. May be G.728, I was unable to find a
modern, working decoder to test.
Bitrate is 16kb/s, packet size is 80 bytes.
{{{
$ ffmpeg -i Sample.mp4
ffmpeg version N-68392-geb72523 Copyright (c) 2000-2014 the FFmpeg
developers
built on Dec 12 2014 18:42:32 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl --enable-libass
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 14.100 / 56. 14.100
libavformat 56. 15.104 / 56. 15.104
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 3.100 / 5. 3.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
[mp2 @ 0x1c091e0] Header missing
Last message repeated 11 times
[mpeg @ 0x1c07ba0] decoding for stream 1 failed
[mpeg @ 0x1c07ba0] Could not find codec parameters for stream 1 (Audio:
mp2, 0 channels, s16p): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
Input #0, mpeg, from 'Sample.mp4':
Duration: 00:02:15.00, start: 52874.498178, bitrate: 266 kb/s
Stream #0:0[0x1e0]: Video: h264 (Baseline), yuv420p, 352x288, 25 fps,
25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x1c0]: Audio: mp2, 0 channels, s16p
At least one output file must be specified
}}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/4182>
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