[FFmpeg-user] Unable to demux 5.1 DVD-Audio rips

[iiser]

Hello. I have a couple of DVD-Audio rips: one contains 44.1kHz/24-bit
5.1-channel MLP track and another one has 48kHz/24-bit 5.1-channel MLP
track. For some reason ffmpeg is extracting only 10kB and 120kB files
respectively from 1GB input. Am I doing something wrong? DVD-Audio Explorer
and VLC do not have any problems with these files. Please see ffmpeg output
below.

====================================

44.1kHz/24-bit 5.1-channel:

ffmpeg -i ATS_01_1.AOB -acodec copy -f mlp test.mlp
ffmpeg version N-38938-ge01f478 Copyright (c) 2000-2012 the FFmpeg
developers
  built on Mar 19 2012 23:16:52 with gcc 4.6.2
  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype
--enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp
--enable-libschroedinger --enable-libspeex --enable-libtheora
--enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid
--enable-zlib
  libavutil      51. 42.100 / 51. 42.100
  libavcodec     54. 12.100 / 54. 12.100
  libavformat    54.  2.100 / 54.  2.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 65.101 /  2. 65.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  7.100 /  0.  7.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mpeg, from 'ATS_01_1.AOB':
  Duration: 00:29:45.39, start: 0.001167, bitrate: 4811 kb/s
    Stream #0:0[0xa1]: Audio: pcm_s16be, 96000 Hz, 8 channels, s16, 12288
kb/s
Output #0, mlp, to 'test.mlp':
  Metadata:
    encoder         : Lavf54.2.100
    Stream #0:0: Audio: pcm_s16be, 96000 Hz, 8 channels, 12288 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
size=      10kB time=00:00:00.02 bitrate=3342.7kbits/s    

video:0kB audio:10kB global headers:0kB muxing overhead 0.000000%

====================================

48kHz/24-bit 5.1-channel:

ffmpeg -i ATS_01_1.AOB -acodec copy -f mlp test.mlp
ffmpeg version N-38938-ge01f478 Copyright (c) 2000-2012 the FFmpeg
developers
  built on Mar 19 2012 23:16:52 with gcc 4.6.2
  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-runtime-cpudetect 

--enable-avisynth --enable-bzlib --enable-frei0r --enable-libopencore-amrnb
--enable-libopencore-amrwb 

--enable-libfreetype --enable-libgsm --enable-libmp3lame
--enable-libopenjpeg --enable-librtmp 

--enable-libschroedinger --enable-libspeex --enable-libtheora
--enable-libvo-aacenc --enable-libvo-amrwbenc 

--enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs
--enable-libxvid --enable-zlib
  libavutil      51. 42.100 / 51. 42.100
  libavcodec     54. 12.100 / 54. 12.100
  libavformat    54.  2.100 / 54.  2.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 65.101 /  2. 65.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  7.100 /  0.  7.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mpeg, from 'ATS_01_1.AOB':
  Duration: 00:32:28.35, start: 0.007333, bitrate: 4408 kb/s
    Stream #0:0[0xa1]: Audio: pcm_s16be, 96000 Hz, 6 channels, s16, 9216
kb/s
Output #0, mlp, to 'test.mlp':
  Metadata:
    encoder         : Lavf54.2.100
    Stream #0:0: Audio: pcm_s16be, 96000 Hz, 6 channels, 9216 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
size=     120kB time=00:00:02.62 bitrate= 373.9kbits/s    video:0kB
audio:120kB global headers:0kB muxing 

overhead 0.000000%

====================================


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