Re: Problem with AAC and AudioFile
Re: Problem with AAC and AudioFile
- Subject: Re: Problem with AAC and AudioFile
- From: john <email@hidden>
- Date: Fri, 23 Jan 2004 22:23:19 -0500
Hi Bill,
I don't mean to imply anything because I really know nothing :) Thanks
for the additional information, it is helpful. Are there any plans to
support the mpeg4 style of file in AudioFile? If so, I assume the audio
converter format would remain the same?
BTW, does Quicktime support the ADTS type? I guess I could easily test
that, but I'm still working out my wrapper code for everything and
haven't gotten that far.
Thanks.
-- John
You imply that this is an either/or choice... It isn't. MPEG-4 AAC is
defined as a superset or re-definitions of *some* of the tools that
are first defined in MPEG-2 AAC. The low-complexity AAC profile is
similar between the two standards.
What we are talking about here with ADTS files, is NOT the encoder or
the decoder, but just a file format that can contain AAC data that was
defined first in MPEG-2.
ADTS is used for raw bit stream types of uses of AAC, and is a simple
file format for carrying AAC data around in. We're not expecting or
desiring that this would become a mechanism for distributing AAC data
around, but it does represents a lightweight and easy to parse
container for AAC. Some encoders that are available will output ADTS
files, so this seemed a reasonable option to us to provide support for
this in CA.
Bill
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