Specific information about the field of a video frame in the buffer (type CFDictionary, containing the temporal bottom first and top first and spacial first-line-early and first-line-late 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)