[FFmpeg-trac] #502(undetermined:new): Jumping frames when copying video of an h264 file

[FFmpeg]

#502: Jumping frames when copying video of an h264 file
-------------------------------------+-------------------------------------
             Reporter:  Alex__       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Description: Jumping frames when copying video of an h264 file
 Version: latest trunk
 URL: see below

 Steps that will reproduce the problem?
 ffmpeg -i sample.avi -vcodec copy sample-copy.m4v

 What is the expected result?
 Converted file w/o any issues.

 What happens instead?
 The frames "jump" in the converted file when playing it with
 QuickTimePlayer X 10.1 (more) or VLC (less).

 Possible workaround:
 ffmpeg -i sample.avi sample-copy.m4v

 Any additional information:
 * Example: see below
 * Command:
 {{{
 $ ffmpeg -y -i sample.avi -vcodec copy sample-copy.m4v
 ffmpeg version N-30168-g6d789f5, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Sep 23 2011 09:20:16 with clang 2.1 (tags/Apple/clang-163.7.1)
   configuration: --enable-zlib --disable-debug --enable-libfaac --enable-
 libx264 --enable-gpl --enable-nonfree --enable-libmp3lame --enable-
 libtheora --enable-libvorbis --enable-libvpx --enable-libxvid --cc=clang
   libavutil    51. 17. 0 / 51. 17. 0
   libavcodec   53. 17. 0 / 53. 17. 0
   libavformat  53. 13. 0 / 53. 13. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 43. 3 /  2. 43. 3
   libswscale    2.  1. 0 /  2.  1. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 Input #0, avi, from 'sample.avi':
   Metadata:
     encoder         : transcode-1.0.7rc1
   Duration: 02:02:15.00, start: 0.000000, bitrate: 0 kb/s
     Stream #0.0: Video: h264 (Main) (H264 / 0x34363248), yuv420p, 720x576
 [SAR 16:15 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 50 tbc
     Stream #0.1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16,
 192 kb/s
 Output #0, ipod, to 'sample-copy.m4v':
   Metadata:
     encoder         : Lavf53.13.0
     Stream #0.0: Video: h264 (avc1 / 0x31637661), yuv420p, 720x576 [SAR
 16:15 DAR 4:3], q=2-31, 25 tbn, 25 tbc
     Stream #0.1: Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16,
 128 kb/s
 Stream mapping:
   Stream #0.0 -> #0.0 (copy)
   Stream #0.1 -> #0.1 (mp3 -> libfaac)
 Press [q] to stop, [?] for help
 [ipod @ 0x7ff8f32d1c00] pts has no value
     Last message repeated 64 times
 frame=   65 fps=  0 q=-1.0 Lsize=     479kB time=00:00:02.60
 bitrate=1509.5kbits/s
 video:436kB audio:40kB global headers:0kB muxing overhead 0.564932%
 }}}

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/502>
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