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Chapter 16A - Distributed Multimedia Database Systems...

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1 Distributed Multimedia Database Systems Introduction to Multimedia Database Systems Introduction to MPEG-7 Introduction to MPEG-21 Distributed Multimedia Database System Outline Architectural Consideration Video Servers and Streaming Multimedia Communication Client-Design Issues Content Adaptation Summary Architectural Consideration Video Servers and Streaming Multimedia Communication Client-Design Issues Content Adaptation Summary Architectural Consideration C-S System Peer-to-Peer System MPEG-21-Based Architecture Client-Server System Client-Server Architecture Client applications request multimedia data from the server, which are then processed locally. Drawback - Not scale well with respect to the number of users the heterogeneity of the terminals employed the size of the data requested
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2 C-S-based multimedia system with different profiles Peer-to-Peer System P2P System Portable devices with various capabilities send and transfer multimedia content from one device to another in order to allow greater flexibility Peer-to-peer services may have functions To hold the content from the creation to the delivery To check the capability of the other peer party and see whether it can process the multimedia data before delivering To create metadata to describe content received from the users Technical challenges The realization of generic information communication between peers : P2P communication protocols (e.g. CC-PP, JXTA v1.0) The protocol considerations communication paradigm has to be reconsidered : Mobile Agent MPEG-21-Based Architecture Web-based distributed MMDBMS relying on MPEG-21 Multimedia Database holds a collection of MPEG21 DIs. Web server is the front end for all users to the framework providers. MPEG-21 terminals are where users consume and create DIs for the use in the distributed system P2P-based multimedia system relying on MPEG-21 Architectural Consideration Video Servers and Streaming Multimedia Communication Client-Design Issues Content Adaptation Summary
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