[FFmpeg-trac] #1597(undetermined:new): vbr mp2 decoding is broken

[FFmpeg]

#1597: vbr mp2 decoding is broken
-------------------------------------+-------------------------------------
               Reporter:  richardpl  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:  git-       |  undetermined
  master                             |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 Summary of the bug:

 VBR files produced with twolame -vbr input.wav output.mp2
 do not play correctly
 How to reproduce:
 {{{

 > ffmpeg -i output.mp2 -f null -
 ffmpeg version git-2012-08-02-156ca05 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Aug  2 2012 17:11:44 with FreeBSD clang version 3.0
 (tags/RELEASE_30/final 145349) 20111210
   configuration: --cc=clang --as=clang --extra-cflags=-I/usr/local/include
 --extra-cflags=-analyze --extra-ldflags=-L/usr/local/lib --samples
 =../fate-suite --disable-debug --disable-static --disable-postproc
 --disable-indev=v4l2 --disable-indev=alsa --disable-indev=bktr --disable-
 indev=dshow --disable-indev=dv1394 --d
 isable-indev=fbdev --disable-indev=jack --disable-indev=libcdio --disable-
 indev=libdc1394 --disable-indev=openal --disable-indev=pulse --disable-
 indev=sndio --disable-indev=vfwcap --disable-outdev=sndio --disable-
 outdev=alsa --disable-outdev=sdl --disable-doc --enable-nonfree --enable-
 openssl --enable-gpl --enable-sha
 red --enable-libx264 --enable-libmp3lame --enable-libschroedinger
 --enable-x11grab --enable-libopenjpeg --enable-libaacplus --enable-
 libtwolame
   libavutil      51. 66.100 / 51. 66.100
   libavcodec     54. 47.100 / 54. 47.100
   libavformat    54. 22.100 / 54. 22.100
   libavdevice    54.  2.100 / 54.  2.100
   libavfilter     3.  5.101 /  3.  5.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 15.100 /  0. 15.100
 [mp3 @ 0x29932100] max_analyze_duration 5000000 reached at 5015510
 [mp3 @ 0x29932100] Estimating duration from bitrate, this may be
 inaccurate
 Input #0, mp3, from 'out.mp2':
   Duration: 00:05:56.22, start: 0.000000, bitrate: 192 kb/s
     Stream #0:0: Audio: mp2, 44100 Hz, stereo, s16, 192 kb/s
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf54.22.100
     Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (mp2 -> pcm_s16le)
 Press [q] to stop, [?] for help
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing
 Error while decoding stream #0:0: Invalid data found when processing input
 [mp2 @ 0x299a2400] Header missing

 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1597>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker