[Ffmpeg-devel] [bug report] ffmpeg doesn't support DSPGroup TrueSpeech audio codec

[Bo Xie]

Hi,

   The following are several steps to repeat the a bug "ffmpeg doesn't
support DSPGroup TrueSpeech audio codec".

   1. Download latest ffmpeg cvs (FFMpeg-20050614.tar.bz2)
   2. "./configure --enable-memalign-hack" in mingw
   3. make
   4. test file: c:\windows\clock.avi of windows xp box
----------------
$ ffmpeg -i clock.avi
ffmpeg version 0.4.9-pre1, build 4756, Copyright (c) 2000-2004 Fabrice Bellard
  configuration:  --enable-memalign-hack 
  built on Jun 14 2005 17:05:11, gcc: 3.2.3 (mingw special 20030504-1)
Input #0, avi, from 'clock.avi':
  Duration: 00:00:12.0, start: 0.000000, bitrate: 55 kb/s
  Stream #0.0: Video: msrle, pal8, 321x321, 1.00 fps
  Stream #0.1: Audio: 0x0022, 8000 Hz, mono, 8 kb/s
Must supply at least one output file
----------------
    5. test transcoding it
----------------
$ ffmpeg -i clock.avi -ar 16000 c.avi
ffmpeg version 0.4.9-pre1, build 4756, Copyright (c) 2000-2004 Fabrice Bellard
  configuration:  --enable-memalign-hack 
  built on Jun 14 2005 17:05:11, gcc: 3.2.3 (mingw special 20030504-1)
Input #0, avi, from 'clock.avi':
  Duration: 00:00:12.0, start: 0.000000, bitrate: 55 kb/s
  Stream #0.0: Video: msrle, pal8, 321x321, 1.00 fps
  Stream #0.1: Audio: 0x0022, 8000 Hz, mono, 8 kb/s
File 'c.avi' already exists. Overwrite ? [y/N] y
Output #0, avi, to 'c.avi':
  Stream #0.0: Video: mpeg4, yuv420p, 321x321, 1.00 fps, q=2-31, 200 kb/s
  Stream #0.1: Audio: mp2, 16000 Hz, mono, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Unsupported codec (id=0) for input stream #0.1
----------------
   6. The audio codec of clock.avi is DSPGroup TrueSpeech from
http://www.thozie.de/avimaster/index.htm.

Best Regards,
Xie Bo