Efficient composition of media object for multimedia scene rendering

In an audiovisual scene consisting of high capacity multimedia objects, when a scene change, which an object is inserted, deleted, or replaced in real time by user interaction, is required, the object priority order compositor for an multimedia player according to the present invention performs rendering of objects based on priority order of objects. The compositor searches priority order of objects, and makes it possible to arbitrarily change order of objects and further to perform rendering of only objects requiring reconstruction. Thus, the object priority order compositor provides re-usability and availability of multimedia data. Further, the object priority order compositor renders efficient multimedia data processing possible by providing a user with a dynamic scene.