PARTIAL VIDEO SEQUENCE CACHING SCHEME FOR VOD SYSTEMS WITH HETEROGENEOUS CLIENTS

Video on demand (VOD) is one of the keg applications in the informatio n era, A hinge factor to its widespread use is the huge bandwidth requ ired to transmit digitized video to a large group of clients with wide ly varying requirements, This paper addresses issues of heterogeneous clients bg proposing a program caching scheme called the partial video sequence (PVS) caching scheme. The PVS caching scheme decomposes vide o sequences into a number of parts by using a scalable video compressi on algorithm, Video parts are selected to be cached in local,ideo serv ers based on the amount of bandwidth that mould be demanded from the d istribution network and central video server if it was only kept in th e central video server, In this paper, we also show that the PVS cachi ng scheme is suitable for handling vastly varying client requirements.