any command line-based tool to demux .avi?

[junglemike]

Hi I have large number of small .avi files (captured w/ camera). I want to extract audio tracks from all of them. I know progs like virtualdub can do it - but i'm searching for a command-line based tool, or maybe some tool that i can demux many files in one go.
Thanks

[buzzqw]

avi2wav , despite of name is a demuxing tool for avi

http://www.divx-digest.com/software/avi2wav.html

BHH

[Mr_Odwin]

With the wav files that are extracted, what would happen if you just changed the filename extension back to mp3 say, if that's what the audio was originally?

[buzzqw]

as i said this i s ademuxing tool so if original avi has mp3 audio, the audio extracted would be mp3. The same for ac3

I can even suggest to use mplayer with audiodump feature.

BHH

[smok3]

in response to the original question, make sure that virtualdub and vdub are on the path, then use a code like:

echo ...............vdub extract audio to pcm...............
echo VirtualDub.Open(VirtualDub.params[0]); > "%inpfullnoext%.script"
echo VirtualDub.SaveWAV(VirtualDub.params[1]); >> "%inpfullnoext%.script"
@vdub /i "%inpfullnoext%.script" "%inpfull%" "%inpfullnoext%_vdub.wav"