How do you extract the index postion from mp4s with AS3?

I know you can extract metadata from mp4s but I want to pull specifically the index point which is in Moov Atom. Any input is 开发者_运维技巧greatly appreciated.

If anyone knows of a program that can read the index position of an mp4 would be even better.

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For an example in AS3, see http://renaun.com/blog/2010/06/qtindexswapper-2/

This utility locates the MOOV atom and then, if necessary, moves it to the front of the mp4 for progress streaming.