A video server allows to deliver multiple video streams to different clients. To provide the required amount of storage and bandwidth, a video server must contain a large number of disks. Since the retrieval rate of the disk and the consumption rate of the clients differ, the data retrieved from disk need to be temporarily stored in main memory, which is an important cost factor in a video serv...

1 Abstract A novel and simple approach for deening end-to-end Quality of Service (QoS) in Video-on-Demand (VoD) services is presented. Using this approach we derive a schedulable region for a video server which guarantees end-to-end QoS, where a speciic QoS required in the video client translates into a QoS speciication for the video server. Our methodology is based on a generic model for VoD s...

Recently, there has been a trend toward designing video-on-demand systems using parallel-server architectures. By exploiting server-level parallelism, researchers can break through the performance limit of a single server, while keeping the system cost low by leveraging on commodity hardware platforms. A number of studies have demonstrated the feasibility of building parallel video servers arou...

This paper describes the design and implementation of cyber video consultation systems(CVCS) using hybrid P2P for video consultation between remote sites. The proposed system is based on client-server and P2P(Peer to Peer) architecture, where client-server is used for communication with the MCU(Multipoint Control Unit) and P2P is used for the cyber video consultation. The developed video consul...

1 Abstract A novel and simple approach for deening end-to-end Quality of Service (QoS) in Video-on-Demand (VoD) services is presented. Using this approach we derive a schedulable region for a video server which guarantees end-to-end QoS, where a speciic QoS required in the video client translates into a QoS speciication for the video server. Our methodology is based on a generic model for VoD s...

In this paper, we consider transmission of variable bit rate (VBR) stored video for distributed streaming service. In streaming service over Internet, video server usually employs network congestion control protocol in order to adapt the dynamic change of network traffic. This protocol often results in the discontiguity of playback at client’s side. We propose a novel transmission scheme to ove...

Due to the high bandwidth requirement and rate variability of compressed video, delivering video across wide area networks (WANs) is a challenging issue. Proxy servers have been used to reduce network congestion and improve client access time on the Internet by caching passing data. In this paper, we investigate ways to store or stage partial video in proxy servers to reduce the network bandwid...

pseudo-client program] In this poster, we present an implementation of a VOD (Video on Demand) system that addresses the problem of increasing video stream supplying capabilities. To get fundamental data of video stream transferring characteristics on Ethernet, we first made an experiment in which it became clear that bottlenecks of CPU of a video server was the most serious. To solve this prob...

Video-on-demand (VoD) systems have traditionally been built around the client-server architecture, where a video server stores compressed video for delivery to clients connected by a network. With increasing demand for large-scale VoD systems, researchers have spent considerable effort in designing scalable, reliable, and cost-effective video servers. Nevertheless, a video server can only have ...