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

Movie AtomsSample AtomsVersionA 1-byte specification of the version of this sync sample atom.FlagsA 3-byte space for sync sample flags. Set this field to 0.Number of entriesA 32-bit integer containing the count of entries in the sync sample table.Sync sample tableA table of sample numbers; each sample number corresponds to a key frame. Figure 2-42 (page 108)shows the layout of the sync sample table.Figure 2-42NumberNumberNumberNumberNumberThe layout of a sync sample tableSample 1Sample 2Sample 3Sample 4Sample 5Partial Sync Sample AtomThis atom lists the partial sync samples. Since such samples are not full sync samples, they should not also belisted in the sync sample atom.The type of the partial sync sample atom is ‘stps’.Figure 2-43 (page 108) shows the layout of this atom.Figure 2-43The layout of a partial sync sample atomBytesPartial Sync Sample atomAtom sizeType = 'stps'VersionFlags4413Entry count 4Partial sync sample tablevariable2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.108