If the buffer marks a scene change in the input content, returns a constant.
The returned constant specifies the type of scene change. This string value can be used in key paths for key-value coding, key-value observing, and bindings.
Available in Mac OS X v10.5 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)