what software should I use to extract mp3 from avi video ? (in batch mode)

[mrbruno]

hi !

I really need a fast program to extract mp3 audio tracks
from avi files. I also need to do it in batch, that's why I
can't use nandub (it will only extract audio from one file at a time).
I tried several crappy sotware which pretend to extract
mp3 from avi files, but they re-encode them ! (riverpast audio for example)
I need the ORIGINAL mp3 file from the avi.

Please help !

Thanks

[stax76]

You can try to batch + script VirtualDub.

void Open(string filename) (VirtualDub 1.6.5+ or later)

This is a simpler form of the Open() command that always uses
auto-detect mode for determining the file type.

void SaveWAV(string filename); (VirtualDub 1.4d or later)

Runs the processing engine to produce an output file in WAV format.

/? displays cli switches

/i (invoke) command line flag runs a script and passes additional parameters to it, which are available as VirtualDub.params[n]

here are the scripting docs: http://www.virtualdub.org/docs/vdscript.txt

[stax76]

Searching for demux in titles:

http://forum.doom9.org/showthread.php?t=100277&highlight=demux
http://forum.doom9.org/showthread.php?t=101422&highlight=demux
http://forum.doom9.org/showthread.php?t=95894&highlight=demux

Maybe you can edit the title of this thread to contain demux.

[KpeX]

mplayer file.avi -dumpaudio -dumpfile out.mp3 is pretty easy to script if you're comfortable with the command line.