[FFmpeg-trac] #1745(undetermined:new): PS3 compatibility regression

FFmpeg trac at avcodec.org
Tue Sep 18 03:13:26 CEST 2012


#1745: PS3 compatibility regression
-------------------------------------+-------------------------------------
             Reporter:  SubJunk      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 Prior to the commit https://github.com/FFmpeg/FFmpeg/commit/967facb it was
 possible to produce MPEG-2/AC3 files compatible with PS3 and other
 renderers.
 It is still possible, however seeking sometimes produces incompatible
 files.
 I have confirmed that it started with 967facb; f1fdd20 and releases prior
 to that work perfectly.

 How to reproduce:
 ffmpeg -ss 2 -i input.mkv -bufsize 7000000 -maxrate 54000000 -f vob
 output.mpeg

 Confirmed with 63951ae (latest)

 Here are two files, 7MB each, that show the bug. One was made by f1fdd20
 and the other 967facb:

 http://www.spirton.com/uploads/FFmpeg/ps3compat-967facb-withbug.mpeg
 http://www.spirton.com/uploads/FFmpeg/ps3compat-f1fdd20-withoutbug.mpeg

 MediaInfo doesn't report any difference between the two files except the
 new one has a "Delay relative to video" of 26.5 hours, whereas the older
 one (which works) doesn't report a delay.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1745>
FFmpeg <http://ffmpeg.org>
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