Optimized cache management for scalable video streaming

Abstract

Media proxy caching is an efficient method to provide instant access to multiple video objects in video streaming system. Research efforts in this area are not sufficient due to the possible huge number of heterogeneous requests to scalable encoded video objects. In this paper, we propose an optimized caching scheme for scalable video objects so that both transmission cost and access latency are minimized. A multi-objective optimization model is developed and the corresponding algorithms are designed. Our evaluation results show that compared with other caching methods, proposed scheme can achieve a significant reduction in transmission cost with even a small proxy cache size. Copyright 2007 ACM.