The movie time associated with the buffer. Generally only available for frames emitted by QuickTime (type CFDictionary containing the kCVBufferTimeValueKey and kCVBufferTimeScaleKey keys).
Available in Mac OS X v10.4 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)