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You can extract sound from a DVD, one track at a time or a chapter at
a time. Some simple command line examples should suffice to
demonstrate how this is done.
A DVD in your DVD drive will probably be identified as
/dev/dvd. Have a look at its table of contents with the
lsdvd command:
$ lsdvd
libdvdread: Using libdvdcss version 1.2.5 for DVD access
Title: 01, Length: 02:32:44 Chapters: 26, Cells: 27, Audio streams: 02, Subpictures: 01
Title: 02, Length: 00:17:36 Chapters: 02, Cells: 02, Audio streams: 01, Subpictures: 00
Title: 03, Length: 00:00:11 Chapters: 02, Cells: 02, Audio streams: 01, Subpictures: 00
Longest track: 1
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This DVD has three titles, the first one (Title 01) probably contains
the main material, as it is identified as being the longest track. It
also has two audio streams.
To capture the audio from the tenth chapter of the first title, saving
it in ogg format, the command line is simply (okay, so
not so simple):
$transcode -i /dev/dvd -x dvd -T 1,10,1 -a 0 -y ogg -m track10.ogg
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The arguments identify the input as /dev/dvd (-i),
the type of input as DVD (-x), the title, chapter, and
angle to encode, in this case being title 1, chapter 10, and camera
angle 1 (-T), the audio track is track 0 (-a),
the output format is ogg (-y, and the output
filename is track10.ogg (-m).
To extract multiple chapters from a title you can do the following
composite command:
$ for i in '1 2 3 4 5 6 7 8 9'; do
> echo transcode -i /dev/dvd -x dvd -T 1,$i,1 -a 0 -y ogg -m track0$i.ogg;
> done
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Another example generates mp3 output of chapter 20 from title 1:
$ transcode -i /dev/dvd -x dvd -T 1,20,1 -a 0 -y raw -m track20.mp3
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To extract the whole audio track of a title (all chapters) as ogg audio:
$ transcode -i /dev/dvd -x dvd -T 1,-1 -a 0 -y ogg -m audiotrack.ogg
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If you prefer WAV files, the following will do it:
$ transcode -i /dev/dvd -x dvd -T 1,20 -a 0 -y wav -m track20.wav
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