Consensus on how to identify the existence of Intellectual Property Rights on audiovisual content in MPEG-4 was reached between technical experts and representatives from several content industries, resulting in an optional 'Intellectual Property Identification' dataset that can be attached to audiovisual objects. In future work, MPEG will also address the persistence of this identification information, and the protection of the content itself. A cooperation framework has been defined, that combines the strengths of both the VRML and MPEG approaches. The remainder of this document gives more detailed information, organized according to the different subgroups. Requirements Group Profiles have been defined for Audio, Video and Facial animation.
Profiles are subsets of the complete tool set that can be used by many applications.
Both the Simple and Main profiles contain tools for decoding of speech, natural and synthetic audio, Main being more complex and containing more tools. The most important visual 'object profiles' are called Simple and Core . Both are able to decode 'arbitrary shape' video objects. Core defines a more complex and more powerful tool set than Simple . Simple addresses low complexity applications at lower bitrates, while Core is meant for more demanding applications.