[FFmpeg-trac] #1493(FFmpeg:new): Transcoding MOV file from Rhozet Carbon Server creates video with double duration

[FFmpeg]

#1493: Transcoding MOV file from Rhozet Carbon Server creates video with double
duration
-------------------------------------+-------------------------------------
             Reporter:  kbreeman     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  FFmpeg       |                  Version:  git-
             Keywords:  double       |  master
  duration rhozet carbon server      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
  Using ffmpeg to transcode a MOV file produced/exported by Rhozet Carbon
 Server results in an MP4 with double the expected duration.

 The video file produced plays back fine but includes an additional 4:14 of
 black screen and no audio for a total duration of 8:28. When watching the
 debug output, ffmpeg seems to hang on the final frame of the video and
 then produces an extra 4:14 worth of blank frames after a few minutes
 before exiting cleanly.

 We received permission from our customer to use this video as part of this
 bug report but request that it not be used for anything else.

 How to reproduce:
 {{{
 % ffmpeg -v 9 -loglevel 99 -report -i ~/Desktop/BC-
 foo1/79855382001_1656639096001_449-NHS-Osteoporosis-CaseStudy-
 16x9-UB-H264-1024-v3.mov /tmp/tmp.mp4

 ffmpeg -version:
 ffmpeg version N-41997-g3f59bbf
 built on Jun 28 2012 15:06:40 with gcc 4.6.3 20120306 (Red Hat 4.6.3-2)
 configuration: --enable-gpl --enable-nonfree --enable-version3 --enable-
 pthreads --enable-postproc --enable-libmp3lame --enable-libvo-aacenc
 --enable-libx264 --enable-avfilter --disable-ffplay --disable-ffserver
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvpx
 libavutil      51. 63.100 / 51. 63.100
 libavcodec     54. 29.101 / 54. 29.101
 libavformat    54. 11.100 / 54. 11.100
 libavdevice    54.  0.100 / 54.  0.100
 libavfilter     3.  0.100 /  3.  0.100
 libswscale      2.  1.100 /  2.  1.100
 libswresample   0. 15.100 /  0. 15.100
 libpostproc    52.  0.100 / 52.  0.100

 }}}

 The file can be downloaded from here:
 {{{
 http://ffmpeg-bug.s3-website-us-
 east-1.amazonaws.com/transcodes_to_double_duration.mov
 size: 503881220 bytes (481 MB)
 md5sum: a37321b6d0231b45dd62f6c3378151be
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1493>
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