By Hari Kalva
ISBN-10: 0306469928
ISBN-13: 9780306469923
ISBN-10: 0792372557
ISBN-13: 9780792372554
Providing MPEG-4 dependent Audio-Visual prone investigates the various points of end-to-end multimedia providers; content material production, server and repair supplier, community, and the end-user terminal. half I presents a finished creation to electronic video communications, MPEG criteria, and applied sciences, and bargains with method point matters together with standardization and interoperability, person interplay, and the layout of a dispensed video server. half II investigates the platforms within the context of object-based multimedia providers and offers a layout for an object-based audio-visual terminal, a few of these beneficial properties having been followed via the MPEG-4 structures specification. The e-book is going directly to examine the necessities for a dossier structure to symbolize object-based audio-visual content material and the layout of 1 such layout. The layout introduces new strategies comparable to direct streaming which are crucial for scalable servers. the ultimate a part of the e-book examines the supply of object-based multimedia shows and offers optimum algorithms for multiplex-scheduling of object-based audio-visual shows, displaying that the audio-visual item scheduling challenge is NP-complete within the robust feel. the matter of scheduling audio-visual items is just like the matter of sequencing jobs on a unmarried desktop. The booklet compares those difficulties and adapts job-sequencing effects to audio-visual item scheduling, and offers optimum algorithms for scheduling shows below source constraints, resembling bandwidth (network constraints) and buffer (terminal constraints). furthermore, the e-book provides algorithms that reduce the assets required for scheduling displays and the auxiliary potential required to help interactivity in object-based audio-visual shows. providing MPEG-4 established Audio-Visual prone is key studying for researchers and practitioners within the parts of multimedia structures engineering and multimedia computing, community execs, carrier prone, and all scientists and technical managers attracted to the main up to date MPEG criteria and applied sciences.
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Extra resources for Delivering MPEG-4 Based Audio-Visual Services (Multimedia Systems and Applications Volume 18)
Sample text
The Level 1 gateway is the first service clients connect to before session establishment. The Level 1 gateway can reside anywhere on the network and provides a list of servers available. Once the client selects a server, the Ll gateway establishes the initial session and drops out. The client is now connected to the service gateway on the server that provides Level 2 gateway services. The service gateway authenticates the clients’ access to the service and provides a client with the root directory service that contain directory, file, or stream services.
There is a one-to-one mapping between service interfaces and client command codes. The commands called by the clients include the port number on which the DSMCC interpreter is listening. This browser-based interface is also used with devices that act as passive decoders and do not have an easy way of communicating with the server. 3. STANDARDIZATION AND INTEROPERABILITY The Digital Audio Visual Council (DAVIC) was formed in 1994 to standardize technology and systems for end-to-end digital delivery services such as video-on-demand (VoD).
It is impossible to create interactive content with content/application specific interactivity that can be understood by all servers. The CommandDescriptor framework allows servers to compose the commands (eg, from an equivalent textual description) in a manner understood by them. , cookie management). To save the state of a scene when a user terminates a session one can implement and save a command descriptor. URLs and data fields in nodes are not sufficient for efficient implementation of such functionality.