The key performance bottleneck for large-scale video-on-demand (VoD) systems is the server bandwidth, which controls the number of clients a video server can support. Two existing stream scheduling schemes can save server bandwidth significantly by using multicast method to transmit video data: the batching scheme and the patching scheme. However, the batching scheme results in long start-up la...

We present the design and experiments from a testbed implementation of multi-source mobile video streaming that combines three mechanisms: 1) load balancing among different paths from multiple sources, 2) resilience to link and server failures, and 3) enhanced offloading by exploiting mobility and throughput prediction to prefetch video data in caches located at hotspots that the mobile will en...

Recently, Peer to Peer(P2P) networks become more and more popular. This paper describes an implementation of real-time video conference system using high speed multimedia communication. The proposed real-time video conference system has hybrid Peer to Peer architecture based on a client-server and peer-to-peer, where client-server is used for exchange of account management, client list and stat...

Internet Protocol Television (IPTV) is gaining recognition as a successful alternative for delivery of the video by telecommunication and cable companies. IPTV features bandwidth efficiencies and management; therefore, it is ideally suited for broadcast and multimedia services. IPTV offers the ability to stream the media in smaller batches, directly from the source. There are a number of basic ...

Parallel video servers have been proposed for building large-scale video-on-demand (VoD) systems from multiple low-cost servers. However, when adding more servers to scale up the capacity, system-level reliability will decrease as failure of any one of the servers will cripple the entire system. To tackle this reliability problem, this paper proposes and analyzes architectures to support server...

Video servers are essential in Video-on-Demand and other multimedia applications. In this paper, we present our high-performance clustered CBR video server, Odyssey. Odyssey is a server connecting PCs with switched Ethernet. It provides efficient support for normal play and interactive browsing functions such as fast-forward and fast-backward. We designed a set of algorithms for scheduling, syn...

We consider the problem of data retrieval from disk storage in a video server where the data is stored in constant size blocks. The two critical resources of a video server are the amount of disk I/O bandwidth and the main memory buffer required to support a video stream. We propose a new algorithm that allows us to determine the cost-optimal trade-off between these two server resources as well...