Re: [linux-audio-user] SAOL/MP4 question

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Subject: Re: [linux-audio-user] SAOL/MP4 question
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Thu Jul 04 2002 - 13:20:07 EEST


On Wed, Jul 03, 2002 at 05:44:55 -0700, John Lazzaro wrote:
> Basically, a big button on the ProTools screen, that dumps out a
> Structured Audio representation of the mix, is the killer compression
> app. The "microphone" tracks would be handled by special-purpose
> SAOL programs that do single-source compression. Everything else is
> just an algorithm. Algorithms that are naturally data heavy (like
> samples) you'd want to convert to a physical model, or else do
> sample-specific compression on the fly.

Yes. This is so right.

Something I have been intending to write for a while is a simple script to
compress the wav files in ardour into FLAC, gz the XML and stuff the whole
thing into a tarfile, but this is a much better idea (though significantly
more effort).

My major concern would be having to encode all the stuff ardour keeps in
XML - sepcially thing like comments. Is it possbile to store the source
XML in addition to the mp4sa instructions in the .mp4 file? That way
ardour could get it native data back and other apps can still get the
translated, normative saol+sasl code, and would ignore the XML.

Sadly, I think an implementation of FLAC in saol is a big job :(

- Steve


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