Anyone familiar with mp4 data structure?

data-structures video mp4
Tom Brito picture Tom Brito · Jun 16, 2010 · Viewed 61.6k times · Source

Where in the mp4 file structure is the duration of it?

Answer

Camilo Martin picture Camilo Martin · Jun 25, 2010

This may not be the answer to your problem but it was to mine: http://mediainfo.sourceforge.net/

(It has a library and it's open source so you can just check for the part(s) you need)

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