[Mp4-tech] [Audio]Dynamic range/ downmix signaling

[Gabriel Bouvigne]

In an AAC context, I am wondering what would be the proper way to signal 
dynamic range info (variable through time) and downmix info (from 
multichannel).
I have 3 cases in mind where I think that it should probably be handled 
differently:
*AAC in mpeg-4 container
*AAC over RTP
*AAC in mpeg-2 TS
In AC3, those infos are directly part of the ATSC-A52 standard. Is there 
anything defined about this in mpeg-4 (or perhaps mpeg-7)?
Regards,
-- 
Gabriel Bouvigne
www.mp3-tech.org
personal page: http://gabriel.mp3-tech.org