[FFmpeg-trac] #3826(undetermined:new): Can't get frame of a video just from specific second

FFmpeg trac at avcodec.org
Mon Aug 4 13:37:51 CEST 2014


#3826: Can't get frame of a video just from specific second
-------------------------------------+-------------------------------------
             Reporter:  jurassic     |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:               |                  Version:  2.2.4
  undetermined                       |               Blocked By:
             Keywords:               |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 I'm trying to use ffmpeg to play with a lot of different video files and
 formats, so I'm using videos from this page:
 http://download.wavetlan.com/SVV/Media/HTTP/http-3gp.htm

 There's one specific with a curious problem.
 http://download.wavetlan.com/SVV/Media/HTTP/3GP/QuickTime/Quicktime_test3_3GPv5_H263_xbit_176x144_AR1
 .22_30fps_KF1in30_32kbps_AMR-NB_Mono_8000Hz_6.7kbps.3gp

 If I try to get a PNG from this video, it works just if seconds is less
 than 43.

 {{{
 % ffmpeg -y -ss 00:40 -i Quicktime_test3_3GPv5_H263_xbit_176x144_AR1
 .22_30fps_KF1in30_32kbps_AMR-NB_Mono_8000Hz_6.7kbps.3gp -vframes 1
 output.png
 works for me

 % ffmpeg -y -ss 00:43 -i Quicktime_test3_3GPv5_H263_xbit_176x144_AR1
 .22_30fps_KF1in30_32kbps_AMR-NB_Mono_8000Hz_6.7kbps.3gp -vframes 1
 output.png
 works for me

 % ffmpeg -y -ss 00:44 -i Quicktime_test3_3GPv5_H263_xbit_176x144_AR1
 .22_30fps_KF1in30_32kbps_AMR-NB_Mono_8000Hz_6.7kbps.3gp -vframes 1
 output.png
 does not works for me
 It says: Output file is empty, nothing was encoded (check -ss / -t /
 -frames parameters if used)
 }}}

 Version used: (macosx)
 ffmpeg version 2.2.4-tessus Copyright (c) 2000-2014 the FFmpeg developers
   built on Jun 29 2014 16:35:46 with clang version 3.3
 (tags/RELEASE_33/final)

 I also tried with other versions (2.1.5 and 2.3)

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3826>
FFmpeg <https://ffmpeg.org>
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