[M4IF Technotes] questions on mp4 file format

[Heat Mist]

Hi, 
I understand that different mpeg4 encoders and
decoders can implement different video/audio profiles
of the standard so that mp4 file encoded by one
encoder may not be decoded by another decoder. Is it
possible to have a mp4 file parser that only retrieve
metadata information from any mp4 file without
decoding the data since the mp4 file structure should
be the same for every mp4 file?
Thanks,
cft
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