Two kinds of profile, AAC_ISO and AAC_ADTS.
*.mp4 files are ISO file.
http://en.wikipedia.org/wiki/Advanced_Audio_Coding
In addition to the MP4, 3GP and other ISO base media file format-based container formats for storage, AAC audio data may be packaged in a more basic format called Audio Data Interchange Format (ADIF),[39] consisting of a single header followed by the raw AAC audio data blocks.[40] Alternatively, it may be packaged in a streaming format called Audio Data Transport Stream (ADTS), consisting of a series of frames, each frame having a header followed by the AAC audio data
2012/05/14
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