[Matroska-devel] AAC and SBR

Alexander Noe' alexander.noe at s2001.tu-chemnitz.de
Wed Apr 26 09:39:31 CEST 2006

Zen schrieb:

> I don't understand where come from this "size" of 5, why do you do this?

HE-AAC has 5 bytes of private data in WAVEFORMATEX when muxed into AVI 
(and I guess also 5 bytes of private data in MP4). Thus, when using 
such a source, you can tell whether or not its SBR from looking at the 
private data size.


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