Wrong duration for mp3 file

[Carl Eugen Hoyos]

​http://thread.gmane.org/gmane.comp.video.ffmpeg.user/52966
A user provided a mp3 sample that shows an incorrect too short duration (while the sample in ticket #2931 shows a too long duration). MPlayer and vlc show the correct duration if libavformat is not used.

$ ffmpeg -i 114.mp3 -f null -
ffmpeg version N-64722-ge5cb779 Copyright (c) 2000-2014 the FFmpeg developers
  built on Jul 17 2014 15:02:55 with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl
  libavutil      52. 92.101 / 52. 92.101
  libavcodec     55. 69.100 / 55. 69.100
  libavformat    55. 48.101 / 55. 48.101
  libavdevice    55. 13.102 / 55. 13.102
  libavfilter     4. 11.102 /  4. 11.102
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 19.100 /  0. 19.100
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mp3, from '114.mp3':
  Duration: 00:00:06.79, start: 0.025057, bitrate: 1017 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    Metadata:
      encoder         : LAME3.96r
Output #0, null, to 'pipe:':
  Metadata:
    encoder         : Lavf55.48.101
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
    Metadata:
      encoder         : Lavc55.69.100 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (mp3 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
size=N/A time=00:00:53.94 bitrate=N/A
video:0kB audio:9293kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

[llogan]

Possibly related to #2697.

[Carl Eugen Hoyos]

Should be fixed in ef21b3d3

[Carl Eugen Hoyos]

Thanks to Oliver Fromme for the analysis!