Why was MPEG-4 Systems developed?
The MPEG-4 standard addresses the coded representation of both natural and synthetic (computer generated) audio and visual objects. An audiovisual object is a representation of a natural or synthetic entity that has an audio and/or visual manifestation. Audio-visual objects may be associated with elementary streams that carry time dependent data related to the objects. MPEG-4 Systems was developed to provide the necessary facilities for specifying how audiovisual objects can be composed together in an MPEG-4 terminal to form complete scenes, how a user can interact with the content, as well as how the streams should be managed for transmission or storage.
