THE MAIN FEATURES OF DMP can be summarized as follows:

The Distributed Multimedia Plays (DMP) three-layer systems architecture provides near-natural virtual networked auto-stereoscopic multi-view video and multi-channel sound collaboration between players, and players and servers. To guarantee the end-to-end time delay less than 10-20 milliseconds, and obtain high network resource utilization, the quality of audio-visual (AV) content is allowed to vary with the traffic in the network. To approach the natural level of human perception, the audiovisual quality has to be increased to levels that temporarily require data rates of the order 10&3-10&5 larger than in existing telepresence systems. The adaptation scheme is called Quality Shaping, and uses Scene Profiles and Quality Shaping Profiles in the shaping process. The Quality Shaping concept includes controlled dropping of sub-objects in the network, controlled dropping of sub-object at access nodes, based on feedback of measured load in network nodes, and prioritized and end-to-end guaranteed delivery sequence of packets. In addition to traffic and scene control, the architecture also supports pertinent security and graceful degradation of quality when nodes or links fail. Parameters included in the quality concept, and that can be controlled adaptively, are the end-to-end delay, the number of 3D scene sub-objects and their temporal and spatial resolution, adaptive and scalable compression of sub-objects, and the number of spatial views. The integrated scene composition and Quality Shaping scheme uses traffic classes, measurements and forecasting of traffic, feedback control, and traffic and scene quality shaping. The scheme includes scene object behavior analysis, selected packet drop and source scaling. To support Quality Shaping, a new three-layer architecture and the novel AppTraNetLFC protocol has been defined. Due to separate compression of sub-objects, and a packing strategy providing independent parallel audiovisual packets, both high quality- and lower quality multicast users can directly sort out from the large stream the quality they want. To provide DMP services and implement the Quality Shaping concept, Collaboration Spaces (user), Access Nodes with various servers, and Network Nodes have to be installed in well planned (continental, global with reduces delay requirements) network structures The security philosophy of DMP is to give more responsibility to network- and service providers, and reduce the user’s ability to make changes in other user’s control premises. This concept gives new opportunities for making business with the network itself, in addition to services. Actual DMP applications from arts are jazz sessions, song lessons, and distributed opera. Other applications are in coming generations TV (MHP extended with DMP), games, education, and near-natural virtual meetings.

The latest updated documentation can be found here: dmpdec11.docx