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

Movie AtomsSample AtomsFigure 2-51 (page 115) shows the layout of an arbitrary chunk offset table.Figure 2-51An example of a chunk offset tableOffsetOffsetOffsetOffsetOffsetChunk 1Chunk 2Chunk 3Chunk 4Chunk 5Sample Dependency Flags AtomThe sample dependency flags atom uses one byte per sample as a bit field that describes dependencyinformation. The sample dependency flags atom has a type of 'sdtp'.Figure 2-52 (page 115) shows the layout of this atom.Figure 2-52The layout of a sample dependency flags atomBytesSample Dependency Flags atomAtom sizeType = 'sdtp'VersionFlagsSample dependency flags table4413variableSizeA 32-bit integer that specifies the number of bytes in the sample dependency flags atom.TypeA 32-bit integer that identifies the atom type; this field must be set to ‘sdtp’.VersionA 1-byte specification of the version of this atom.FlagsA 3-byte space reserved for flags. Set this field to 0.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.115