The performance of a video-on-demand server is affected by the dynamics of user accesses behavior. Most existing efforts consider static user request distributions in their design which can lead to poor performance if the accesses are different from that predicted. Even the use of a video store model to characterize user requests fails to account for the interactive nature of access. This sugge...

In recent advances the high speed video transmission over the wireless network has gained popularity among the users. To gain the improved quality of the video on the receiver side without time delay on multiple users accessing the server at the same time is being the challenging task. To transmit the video on wireless network the VIDEO ON DEMAND (VoD) system and services are used. A video on d...

Video-on-demand applications must consider the bandwidth limitations at the server, within the network, and at the client. Recent multicast delivery techniques have addressed the server and network bandwidth bottlenecks. These techniques, however, neglect consideration of client network access bandwidth limitations. Client bandwidth is often insufficient to permit streaming video of the quality...

In this paper, we introduce a new scheme for the remote control of mobile robots over IP networks such as the Internet. The hardware configuration of the platform consists mainly of a Pioneer 2 PeopleBot mobile robot. On the head of the robot, there is a Sony PTZ video camera which is used to provide live visual feedback on robot’s immediate environment. There are two sonar arrays for range mea...

Streaming high quality videos consumes significantly large amount of network resources. In this context request-toservice delay, network traffic, congestion and server overloading are the main parameters to be considered in video streaming over the internet that effect the quality of service (QoS). In this paper, we propose an efficient architecture as a cluster of proxy servers and clients tha...

We consider a server with large capacity delivering video files encoded in various resolutions. We assume that the system is under saturation in the sense that the total demand exceeds the server capacity C. In such a case, requests may be rejected. For the policies considered in this paper, instead of rejecting a video request, it is downgraded. When the occupancy of the server is above some v...

Fibre Channel, VOD servers, I/O performance, storage interface The emerging "information super-highway" and accelerating improvements in computer and mass storage technologies will soon make multimedia services, such as video-on-demand (VOD), a reality. Since a media server will be required to move a large amount of data over distribution networks, its 1/0 subsystem design is critical to its su...

On-demand video servers based on hierarchical storage systems are able to ooer high-capacity and low-cost video storage. In such a system, video les are stored in the tertiary level and transferred to the secondary level to be displayed. The design of video servers allowing user interaction with the playbacked video is of great interest. We have conducted a comprehensive study on the architectu...

In this paper we describe an architecture for a multi-client, multi-channel video streaming server targeted at the security market. For each connected client, the best selection of available compressed video streams per channel is made, optimizing the perceived quality of the video channels requested by the client. We propose techniques to scale the bitrate per video stream and introduce a sche...