Rate Control in an MPEG-2 Video Rate Transcoder For Trasport Feedback based Quality-Rate Tradeoff

In this paper we present result from an application integrated congestion control mechanism designed for time-sensitive traffic based on the principle of direct protocol interactivity. In contrast to classical transport protocols we envision a transport mechanism, which is interactive and can provide event notification to the subscriber of its communication service. We then show a friendly adaptive MPEG-2 video transcoding scheme, which directly interacts with the transport protocol and adjusts its production in synch with the impairment events in the transport layer. In this paper we present the application side symbiotic mechanics, and report potential dramatic improvement in time-bounded video delivery. The system can be implemented with relative simple and direct modification of the current TCP transport.