In this paper we address the problem of supporting interactive playout of an MPEG encoded video stream at a player device. We propose a method for transforming the standard MPEG stream to a local form at the player device, which then enables the device to support eecient interactive playout, speciically for backward playout, even when the buuer space available is constrained. Explicitly, we dev...

The quality of service limitation of today’s Internet is a major challenge for real-time voice communications. Excessive delay, packet loss, and high delay jitter all impair the communication quality. A new receiver-based playout scheduling scheme is proposed to improve the tradeoff between buffering delay and late loss for real-time voice communication over IP networks. In this scheme the netw...

Simulation balancing is a new technique to tune parameters of a playout policy for a Monte-Carlo game-playing program. So far, this algorithm had only been tested in a very artificial setting: it was limited to 5× 5 and 6× 6 Go, and required a stronger external program that served as a supervisor. In this paper, the effectiveness of simulation balancing is demonstrated in a more realistic setti...

We introduce a constraint-driven methodology for the automated assembly, organization and playout of presentations from multimedia databases. We use inclusion and exclusion constraints for extracting a semantically coherent set of multimedia segments. Presentation organization constraints are utilized for organizing the multimedia segments into a presentation, which in turn helps decide the pla...

Adaptive Playout is a solution in IP-based communication clients to compensate network issues using a dynamic receiver buffer. Whereas small buffers provoke loss artefacts due to delayed packets, large buffers result in high delay and loss of interactivity. Existing Voice over IP clients balance the trade-off between low delay and loss artefacts based on empirical values. Most often the degree ...

We investigate transmission and playout policies for streaming media over a wireless link. In particular, we choose both the power at the transmitter and the playout rate at the receiver, in order to minimize the power consumption and maximize the media quality. We formulate the problem using a dynamic programming approach, study the structural properties of the optimal solution, develop justif...

This paper presents a closed-loop (demand-driven) approach towards VoD services, called multicast with caching (Mcache). Servers use multicast to reduce bandwidth usage by serving multiple requests using a single data stream. However, this requires clients to delay receiving the movie until the multicast starts. Using regional cache servers, Mcache removes initial playout delays at clients, bec...

In this paper we examine the impact of the adopted playout policy on the performance of P2P live streaming systems. We argue and demonstrate experimentally that (popular) playout policies which permit the divergence of the playout points of different nodes can deteriorate drastically the performance of P2P live streaming. Consequently, we argue in favor of keeping different playout points “near...

VoIP, one of emerging technologies, offers high quality of real time voice services over IP-based broadband networks; however, the quality of voice would easily be degraded by IP network impairments such as delay, jitter and packet loss, hereon initiate the presence of new technologies to help solve out the problems. Among those, playout buffer at the receiving end can compensate for the jitter...