大规模流媒体应用中关键技术的研究

Large-scale online streaming video application has gradually become the most important and potential technology of multimedia applications. Since Internet is heterogeneous and there is no Quality of Service (QoS) and security guarantee, large scale online streaming video application over the Internet faces many challenges. This paper, following the development of video sourcing coding and network transmission technology, comprehensively and deeply presents the scalable encoding and error-resilient encoding, and the development of multicast and P2P technology. Specially a new streaming architecture is proposed to satisfy the requirement of QoS, heterogeneity, and security guarantee in practical application. Some detailed analysis and comparisons are conducted in this paper. At last, future research direction is proposed.