[FFmpeg-trac] #2757(undetermined:new): Wrong duration detected for a 3g2 file

[FFmpeg]

#2757: Wrong duration detected for a 3g2 file
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  Underground78                      |                 Priority:  normal
               Status:  new          |                  Version:  git-
            Component:               |  master
  undetermined                       |               Blocked By:
             Keywords:               |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 Sample : http://www1.datafilehost.com/d/5d938421 or
 http://henahena.ddo.jp:8080/loop9th/MAV_0034.3G2

 The duration detected for that 3g2 file is incorrect. The real duration is
 around 50s (instead of 15s).

 How to reproduce:
 {{{
 % ffplay MAV_0034.3G2
 ffplay version N-54277-gff130d7 Copyright (c) 2003-2013 the FFmpeg
 developers
   built on Jun 30 2013 01:20:12 with gcc 4.7.3 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
 --enable-gnutls --enable-iconv --enable-libass --enable-libbluray
 --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc
 --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
 --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-
 librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex
 --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-
 libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264
 --enable-libxavs --enable-libxvid --enable-zlib
   libavutil      52. 37.101 / 52. 37.101
   libavcodec     55. 17.100 / 55. 17.100
   libavformat    55. 10.100 / 55. 10.100
   libavdevice    55.  2.100 / 55.  2.100
   libavfilter     3. 77.101 /  3. 77.101
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MAV_0034.3G2':  0B f=0/0
   Metadata:
     major_brand     : kddi
     minor_version   : 0
     compatible_brands: kddi3g2a
     creation_time   : 2008-08-30 10:35:42
   Duration: 00:00:15.00, start: 0.000000, bitrate: 1344 kb/s
     Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D),
 yuv420p, 320x240 [SAR 1:1 DAR 4:3], 384 kb/s, 15 fps, 15 tbr, 90k tbn, 15
 tbc
     Metadata:
       creation_time   : 2008-08-30 10:35:42
     Stream #0:1(eng): Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono,
 flt, 8 kb/s
     Metadata:
       creation_time   : 2008-08-30 10:35:42
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2757>
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