[FFmpeg-trac] #3095(avformat:new): Seeking in VBR MP3 file

FFmpeg trac at avcodec.org
Tue Oct 29 14:32:39 CET 2013


#3095: Seeking in VBR MP3 file
----------------------------------+--------------------------------------
             Reporter:  tuukka    |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+--------------------------------------
 Seeking in mp3 CBR file is very accurate and works fine. Now when lame has
 default option to VBR level 4 and there is some problems in seeking.
 This bug can be reproduced with ffprobe:

 {{{

 ./ffprobe -show_frames -read_intervals
 42.004898%+1,41.090612%42.031020,40.045714%41.116735 test-VBR4.mp3

 }}}

 Seek times are chosen from normal 'ffprobe -show_frames' without seeking.
 So playing from begining is working ok. If everything goes fine those PTS
 should be equal when seeking and when playing from start but now they are
 not.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3095>
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