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 |
Description
This issue is reproduced with
ffmpeg version N-79546-g13406b6 Copyright (c) 2000-2016 the FFmpeg developers
Description:
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: https://dl.dropboxusercontent.com/u/89678527/big50.mp4
and generated wav files:
https://dl.dropboxusercontent.com/u/89678527/a.wav
https://dl.dropboxusercontent.com/u/89678527/b.wav
here's comparison of a.wav and b.wav
https://dl.dropboxusercontent.com/u/89678527/mp3.PNG
Change History (2)
comment:1 by , 6 years ago
| Keywords: | mp3 added |
|---|---|
| Version: | unspecified → git-master |
comment:2 by , 6 years ago
| Keywords: | avi added |
|---|
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