A Video-on-Demand (VOD) server needs to store hundreds of movie titles and to support thousands of concurrent accesses. This, technically and economically, imposes a great challenge on the design of the disk storage subsystem of a VOD server. Due to diierent demands for diierent movie titles, the numbers of concurrent accesses to each movie can diier a lot. We deene access proole as the number ...

Yuewei Wang, Jonathan C.L. Liu, David H.C. Du1 and Jenwei Hsieh Distributed Multimedia Research Center2 & Department of Computer Science, University of Minnesota fywang,cliu,du,[email protected] Abstract A Video-on-Demand (VOD) server needs to store hundreds of movie titles and to support thousands of concurrent accesses. We de ne access pro le as the number of concurrent accesses to each movie...

Video-on-demand (VOD) refers to video services in which users can request any video program from a server at any time. VOD has important applications in entertainment, education, information, and adverstising, such as movie-on-demand, distance learning, home shopping, interactive news, etc. In order to provide VOD services accommodating a large number of video titles and concurrent users, a VOD...

We propose a new scalable application-layer protocol, specifically designed for low-bandwidth, data streaming applications with large receiver sets. This is based upon a control hierarchy of successive hypercubes for the peers and is quite robust to peer and network failures. Dynamic load balancing is also incorporated. We present an analysis showing that it is near optimum in performance and u...

The peer-to-peer (P2P) paradigm provides a data distribution model that may be attractive for Video on Demand (VoD) as it allows to decrease the costs and to increase the scalability of video distribution. However, VoD is more challenging for P2P technology than file sharing or live streaming, and so, practically feasible VoD systems proposed to date rely on a backend server infrastructure as a...

| In an on-demand video system, requests for a video le arriving within a period of time can be batched together and served with a single multicast stream; thereby reducing the bandwidth requirement compared with the un-batched case. In this paper, we study various batching schemes to meet delay and prootability requirements | in the window-size based and moving-average schemes, maximum and ave...

Skyscraper Broadcasting is a recently proposed statically scheduled broadcast technique for video-on-demand that addresses the network-I/O bottleneck to provide signiicantly superior performance over previous approaches. This paper deenes a scheme for dynamically scheduling the objects that are broadcast on the skyscraper channels. The dynamic broadcasting scheme is designed to provide all clie...

Large-scale Video-on-Demand (VoD) systems with high storage and high bandwidth requirements need a substantial amount of resources to store, distribute and transport all of the content and deliver it to the clients. We define an extension to the VoD equipment allocation problem as determining the number and model of VoD servers to install at each potential replica location and the origin such t...

Broadcasting protocols can improve the efficiency of video on demand services by reducing the bandwidth required to transmit videos that are simultaneously watched by many viewers. We present here two broadcasting protocols that achieve nearly the same low bandwidth as the best extant broadcasting protocol while guaranteeing a lower maximum access time. Our first protocol, cautious harmonic bro...