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A true video-on-demand(TVOD) system lets users view any video program, at any time, and perform any VCR functions, but its per-user video delivery cost is too expensive. A near video-on-demand(NVOD) is a more scalable approach by batching multiple clients to a shared stream or broadcasting videos. Staggered video broadcasting, one of NVOD techniques,(More)
Several cashing schemes for realtime multimedia systems have been proposed but they only concentrate on the hit ratio as the performance metric without providing any means to utilize the disk bandwidth gained through cache hits. A high cache hit ratio alone does not capture the eeectiveness of a caching scheme for such systems unless hiccup-free service is(More)
In continuous media servers, disk load can be reduced by using buuer cache. In order to use the saved disk bandwidth by caching, a continuous media server must employ an admission control scheme to decide whether a new client can be admitted for service without violating the requirement of clients already being serviced. A scheme providing deterministic QoS(More)
In continuous media servers, disk load can be reduced by using buffer cache. In order to utilize the saved disk bandwidth by caching, a continuous media server must employ an admission control scheme to decide whether a new client can be admitted for service without violating the requirements of clients already being serviced. A scheme providing(More)
A true video-on-demand system allows users to view any video program, at any time, and perform any VCR functions, but its per-user video delivery cost is too expensive to have commercial use. Periodic broadcasting (PB), which is a near video-on-demand technique, broadcasts videos repeatedly over broadcast channels. In this way, PB can service an unlimited(More)
Video-on-demand (VOD) is a service allowing customers to select video programs from a central server for viewing on a television or a computer screen. Traditional unicast VOD systems require huge amounts of the server network's bandwidth, so near-VOD systems using broadcast protocols have been proposed to reduce the bandwidth requirement. Although NVOD(More)