[FFmpeg-trac] #1493(FFmpeg:new): Transcoding MOV file from Rhozet Carbon Server creates video with double duration
FFmpeg
trac at avcodec.org
Thu Jun 28 22:07:06 CEST 2012
#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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