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Message #02450
[Bug 964197] Re: audio and video out of sync when extracting a piece of stream with -ss and -t
[Expired for libav (Ubuntu) because there has been no activity for 60
days.]
** Changed in: libav (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/964197
Title:
audio and video out of sync when extracting a piece of stream with -ss
and -t
Status in libav package in Ubuntu:
Expired
Bug description:
The following command:
ffmpeg -ss 00:02:20 -t 7 -i esqueletos.flv -vcodec mjpeg -s 640x480 -qmin 0.8 -qmax 0.8 -acodec copy esqueletos.mov
should transcode a piece of video of a duration of 7 seconds starting
from 00:02:20.
It actually generates a 7 second video, but the audio does not
correspond to the video, as if it was read out of synchro.
Reporting libav bugs on ubuntu is very frustrating, because many of them have already been fixed ages ago upstream in ffmpeg (I have no idea whether this is the case of this particular bug). I wonder why ubuntu uses a fork of ffmpeg which is ages behind in development...
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: ffmpeg 4:0.7.3-0ubuntu0.11.10.1
ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22
Uname: Linux 3.0.0-17-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Sat Mar 24 23:32:31 2012
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: libav
UpgradeStatus: Upgraded to oneiric on 2011-12-07 (108 days ago)
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