[FFmpeg-trac] #3403(ffplay:new): A/V desync with ffplay for a broken avi sample
FFmpeg
trac at avcodec.org
Fri Feb 21 08:39:08 CET 2014
#3403: A/V desync with ffplay for a broken avi sample
--------------------------------------+--------------------------------
Reporter: cehoyos | Owner:
Type: defect | Status: new
Priority: normal | Component: ffplay
Version: git-master | Keywords:
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
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(Sample from videolan ticket 8618)
A vlc user pointed to a broken avi sample that transcodes fine with ffmpeg
(the output file plays in-sync) but shows A/V desync when played with
ffplay.
Workaround is to seek over the broken parts.
To reproduce, play the sample for 50 seconds to see the problem, seek
instead three times 10 seconds forward to see the same scene play in-sync.
If the huge sample is cut, seeking does not allow anymore to fix the
desync.
{{{
$ ffmpeg -i Swindle.avi
ffmpeg version N-60762-g3edc3b1 Copyright (c) 2000-2014 the FFmpeg
developers
built on Feb 20 2014 11:39:42 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl
libavutil 52. 65.100 / 52. 65.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 33.100 / 55. 33.100
libavdevice 55. 10.100 / 55. 10.100
libavfilter 4. 1.103 / 4. 1.103
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, avi, from 'Swindle.avi':
Metadata:
encoder : VirtualDubMod 1.5.10.2 (build 2540/release)
Duration: 01:13:32.45, start: 0.000000, bitrate: 1802 kb/s
Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID /
0x44495658), yuv420p, 640x352 [SAR 1:1 DAR 20:11], 25 tbr, 25 tbn, 25 tbc
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p,
130 kb/s
At least one output file must be specified
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3403>
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