Quicktime File Format (2012-08-14).pdf

Movie AtomsTrack AtomsFigure 2-7 (page 58) shows the structure of the track header atom.Figure 2-7The layout of a track header atomBytesTrack header atomAtom sizeType = 'tkhd'VersionFlagsCreation timeModification timeTrack IDReservedDurationReservedLayerAlternate groupVolumeReservedMatrix structureTrack widthTrack height441344444822223644The track header atom contains the track characteristics for the track, including temporal, spatial, and volumeinformation.Track header atoms contain the following data elements.SizeA 32-bit integer that specifies the number of bytes in this track header atom.TypeA 32-bit integer that identifies the atom type; this field must be set to 'tkhd'.VersionA 1-byte specification of the version of this track header.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.58