Question About MP4(AAC) Binary Tree

Posted by DeanMc on Stack Overflow See other posts from Stack Overflow or by DeanMc
Published on 2010-04-12T21:06:31Z Indexed on 2010/04/13 13:33 UTC
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c#

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aac

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mp4

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parsing

I'm in the very early stages of working on a tag editor for mp4 files and more specifically iTunes AAC ones. After doing some snooping around it seems that the file's structure is not as complicated as I first thought and is built in a sort of tree like the following

4 Bytes [Atom Length]  4 Bytes [Atom Name]  X Bytes [Atom Data]

An atom's data is as large as the length and can contain either Data(information) or another atom. What I am trying to work out is how one determines if the data is information or an actual atom. Any insight would be much appreciated.

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