QuickTime 3 Reference
Timecode tracks were introduced in QuickTime 2.0. The Image Compression Manager and compressor components have been enhanced to support timecode information. The Image Compression Manager SetDSequenceTimeCode function pascal OSErr SetDSequenceTimeCode ( ImageSequence seqID, const TimeCodeDef *timeCodeFormat, const TimeCodeTime *timeCodeTime); allows you to set the timecode value for a frame that is to be decompressed. For more information about timecode tracks and the timecode media handler, see "Movie Toolbox: Time and Space."