Re: [linux-audio-dev] Q: recording output from audio applications to disk

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Subject: Re: [linux-audio-dev] Q: recording output from audio applications to disk
From: Kai Vehmanen (kaiv_AT_wakkanet.fi)
Date: Sat Jun 16 2001 - 17:03:11 EEST


I've been off the net for a while, so this reply comes a little late..

On Tue, 12 Jun 2001, Joakim Verona wrote:

> I made a track with jazz/timidity/csound that i would like to record
> digitally to disk.
[...]
> Im using alsa 0511.

As 0.5.x still has the loopback device (ALSA 0.6/0.9 doesn't), you can use
it for capturing the resulting output streams.

Assume we have some apps writing to alsa devices 0, 1, 2. You can then
capture their output using:

ecasound -a:bus1 -i alsalb,0,0 -o track1.wav \
         -a:bus2 -i alsalb,1,0 -o track2.wav \
         -a:bus3 -i alsalb,2,0 -o track3.wav

... to mix the output streams in one step...

ecasound -a:bus1 -i alsalb,0,0 \
         -a:bus2 -i alsalb,1,0 \
         -a:bus3 -i alsalb,2,0
         -a:bus1,bus2,bus3 -o stereomix.wav

-- 
 http://www.eca.cx
 Audio software for Linux!


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