[Ffmpeg-devel] Bug? Subtitles not detected in vob

Wolfram Gloger wmglo
Mon Jan 8 13:58:47 CET 2007


> I am trying to convert a vob (from DVD) to a transport stream, for use
> on a sat top box.

Interesting..  I may have some patches for you to try
(though not concerning your problem described below).
Currently, ffmpeg doesn't play very nicely with subtitles unless
they appear regularly.

> The first thing I run into is that ffmpeg doesn't even detect the
> subtitles in the vob file.

Just a data point -- it did work fine at some time in the past:

% ffmpeg -i test2.vob 
FFmpeg version SVN-r6105, Copyright (c) 2000-2004 Fabrice Bellard
  configuration:  --enable-a52 --enable-mp3lame --enable-gpl --enable-libogg --enable-vorbis --enable-teletext-zvbi 
  libavutil version: 49.0.0
  libavcodec version: 51.11.0
  libavformat version: 50.5.0
  built on Aug 27 2006 11:12:48, gcc: 2.95.4 20011002 (Debian prerelease)
Input #0, mpeg, from 'test2.vob':
  Duration: 00:00:17.3, start: 115.196000, bitrate: 9446 kb/s
  Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576, 8700 kb/s, 25.00 fps(r)
  Stream #0.1[0x81]: Audio: ac3, 48000 Hz, 5:1, 384 kb/s
  Stream #0.2[0x80]: Audio: ac3, 48000 Hz, 5:1, 384 kb/s
  Stream #0.3[0x24]: Subtitle: dvdsub
  Stream #0.4[0x23]: Subtitle: dvdsub
Must supply at least one output file


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