Re: [linux-audio-user] scriptable audio editor to (parallel) combine streams

From: Thomas Sattler <tsattler@email-addr-hidden>
Date: Thu Dec 07 2006 - 01:05:48 EET

Hi Kai!

Seems ecasound is the tool I was looking for. Thanks a lot!

Just one comment: handling of ogg files seems to be somewhat buggy.

Example:

filename length size ogg-size (oggenc -q-1)
128.wav 0:29:09 321MB 8.7MB
129.wav 0:29:09 321MB 8.6MB

2x stereo -> 2x mono (left/right)
oggenc(ecasound(128.wav, 129.wav)) -> 0:29:09, 9.9MB (perfekt)

2x stereo -> 2x stereo (front/rear)
oggenc(ecasound(128.wav, 129.wav)) -> 0:29:09, 8.7MB (also perfekt)

but

2x stereo -> 2x mono (left/right)
ecasound(oggenc(128.wav), oggenc(129.wav)) -> 0:31:33, 30MB (bad)

2x stereo -> 2x stereo (front/rear)
ecasound(oggenc(128.wav), oggenc(129.wav)) -> 0:31:32, 21M (also bad)

Difference in size may be du to "oggenc -q -1", which is acceptable
but difference in length is bad.

Thomas

P.S.: Tested with ecasound v2.4.3 and v2.4.4 on Gentoo Linux 

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Received on Thu Dec 7 04:15:03 2006

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