[FFmpeg-trac] #703(undetermined:new): mp3 in wav - wrong duration

[FFmpeg]

#703: mp3 in wav - wrong duration
-------------------------------------+-------------------------------------
             Reporter:  ami_stuff    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 File uploaded to incoming.

 I think the problem is that ffmpeg reports bitrate 27 kb/s instead of 56
 kb/s
 (which is correct - winamp reports it), so as a result the reported
 duration
 is two times longer than it should be.

 {{{
 C:\>ffmpeg -i WAVE_MPEG_Layer-3.wav
 ffmpeg version N-35295-gb55dd10, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Nov 30 2011 00:52:52 with gcc 4.6.2
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-ru
 ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-
 libope
 ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-
 libgsm --en
 able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-
 libschroedinger -
 -enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-
 amrwben
 c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs
 --enable-
 libxvid --enable-zlib
   libavutil    51. 29. 1 / 51. 29. 1
   libavcodec   53. 39. 1 / 53. 39. 1
   libavformat  53. 22. 0 / 53. 22. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 50. 0 /  2. 50. 0
   libswscale    2.  1. 0 /  2.  1. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 [wav @ 020B2320] max_analyze_duration 5000000 reached at 5015510
 Input #0, wav, from 'WAVE_MPEG_Layer-3.wav':
   Duration: 00:05:47.79, bitrate: 27 kb/s
     Stream #0:0: Audio: mp3 (U[0][0][0] / 0x0055), 22050 Hz, stereo, s16,
 56 kb/
 s
 At least one output file must be specified
 }}}

-- 
Ticket URL: <http://ffmpeg.org/trac/ffmpeg/ticket/703>
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