PERFORMANCE OF H.263+ SCALABLE VIDEO OVER A DIFFSERV NETWORK

Abstract Applications requiring QoS, such as interactive and streaming audio/video, are becoming increasingly popular on the Internet. It is not clear yet how the emerging Internet QoS architectures will fulfill the performance requirements of such applications in a heterogeneous and dynamically changing environment. In this paper, we develop a mechanism that uses the temporally scalable and error resilient video coding mode of the H.263+ codec together with the Diffserv QoS architecture. The proposed scalability of transmitted video is shown to allow one to share a congested link with other flows while maintaining video quality for properly provisioned links