基于SVC与DASH的视频流媒体系统Video Streaming Media System Based on SVC and DASH
王宣,王安红
摘要(Abstract)：
随着现代网络技术的高速发展,高清甚至超清流媒体视频业务在网络数据流量中占据越来越高的比例。为统一视频流媒体的传输格式,国际MPEG组织发起制定一种标准的动态自适应流媒体(Dynamic Adaptive Streaming over HTTP,DASH)传输框架。然而,现有DASH框架常采用固定码率的视频编码技术,如H.264,一定程度限制其码流的网络适应性。对此,该研究将可伸缩视频编码(Scalable video coding,SVC)与DASH相结合的流媒体传输方案,提出SVC码流到DASH的映射方案,并在Internet上真正实现了这种码率可伸缩的DASH传输系统,测试验证了系统的调控性能。
关键词(KeyWords)： 流媒体;可伸缩视频编码;动态自适应流媒体;视频传输系统
基金项目(Foundation): 国家自然基金(61272262,61672373);; 山西省留学基金(2014-056);; 山西省科技公关项目(2015031003-2);; 山西省青年科学基金(2014021021-2)
作者(Author): 王宣,王安红
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