Is there anyway to know if a QTMovie is a referenced or flattened one?

UPDATE : It looks like i have to use GetMediaPropertyAtom to find if there is a ‘rmra’ atom (wich mean reference movie). As i have no idea how to make such a c code, some help would be much appreciated.

http://developer.apple.com/documentation/QuickTime/APIREF/getmediapropertyatom.htm

http://developer.apple.com/documentation/QuickTime/APIREF/-rmra-.htm#//apple_ref/doc/uid/TP40001187-DontLinkChapterID_1–rmra-

Thanks - StephaneDassieu