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Partial video sequence caching scheme for VOD systems with heterogeneous clients

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2 Author(s)
Chiu, M.Y.M. ; City Univ. of Hong Kong, Hong Kong ; Yeung, K.-H.A.

Video on demand (VOD) is one of the key applications in the information era. A hinge factor to its widespread use is the huge bandwidth required to transmit digitized video to a large group of clients with widely varying requirements. This paper addresses issues of heterogeneous clients by proposing a program caching scheme called the partial video sequence (PVS) caching scheme. The PVS caching scheme decomposes video sequences into a number of parts by using a scalable video compression algorithm. Video parts are selected to be cached in local video servers based on the amount of bandwidth that would be demanded from the distribution network and central video server if it was only kept in the central video server. We also show that the PVS caching scheme is suitable for handling vastly varying client requirements

Published in:

Industrial Electronics, IEEE Transactions on  (Volume:45 ,  Issue: 1 )