Implementation and Evaluation of Video-Quality Adjustment for Real-Time Video Multicast

By introducing video-quality adaptation mechanisms into intermediate network equipments using active network technologies, we can provide users with video distribution services taking into account client heterogeneity in terms of available bandwidth, performance of client systems, and user’s preferences about video quality. In this paper, we implement the lowpass filter which is the quality adjustment technique for real-time multicasting of MPEG-2 video, on the network processor-based network node. We applied the filter to video streams passing through the node and evaluated its practicality and applicability.