Opened 7 years ago

Last modified 6 years ago

#5457 new defect

mp3 delay issue

Reported by: rhbc73 Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: mp3 avi
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


This issue is reproduced with

ffmpeg version N-79546-g13406b6 Copyright (c) 2000-2016 the FFmpeg developers

Run below commands to generate a.wav and b.wav

ffmpeg.exe -i big50.mp4 -acodec libmp3lame a.mp3
ffmpeg.exe -i a.mp3 a.wav
ffmpeg.exe -i big50.mp4 -vcodec libx264 -acodec libmp3lame b.avi
ffmpeg.exe -i b.avi b.wav

Open a.wav and b.wav in wav file editor you can see there's 50 ms delay in b.wav. (sample rate is 22050, so that 50 ms should be delay introduced by LAME that are don't properly handled by ffmpeg?)

Source mp4 is here:
and generated wav files:

here's comparison of a.wav and b.wav

Change History (2)

comment:1 by Carl Eugen Hoyos, 6 years ago

Keywords: mp3 added
Version: unspecifiedgit-master

If there is an issue, it is still reproducible.

comment:2 by Carl Eugen Hoyos, 6 years ago

Keywords: avi added
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