Programming With QuickTime VR 2.1
A QuickTime VR movie must contain a user data item that indicates which movie controller to use for the movie. The movie controller for QuickTime VR movies has the controller type kQTVRQTVRType (defined in QuickTimeVR.h ) and a subtype and ID defined by these constants:
enum {
kQTControllerType = FOUR_CHAR_CODE('ctyp').
kQTControllerID = 1
};