[Mp4-tech] References for Container Formats

[abhishek jain]

Dear All
I am new to container formats. Currently I am going
thro ISO base media file format. I need to work
specifically on mp4 file format. 
Please provide your inputs to help me understand the
container formats in general and mp4 particularly.
Where can I find related docs(freely available) and
also the source code for mp4 parser. Also I need to
know if any open source mp4 composer is available.
Regards
Abhishek
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