Track atom ('trak')
An atom that defines a single track of a movie.
Overview
Track atoms have an atom type value of 'trak'. The track atom requires a track header atom ('tkhd') and a media atom ('mdia'). Other child atoms are optional, and may include a track clipping atom ('clip'), a track matte atom ('matt'), an edit atom ('edts'), a track reference atom ('tref'), a track load settings atom ('load'), a track input map atom ('imap'), and a user data atom ('udta').
The layout of a track atom is as follows.
Data | Type |
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4 bytes | |
4 bytes | |
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