基于分布式流媒体计算框架的转码系统的设计与实现  

DESIGN AND IMPLEMENTATION OF TRANSCODING SYSTEM BASED ON DISTRIBUTED VIDEO STREAMING COMPUTING FRAMEWORK

作　　者：张宇[1] 刘新[1] 叶德建[1] 

机构地区：[1]复旦大学软件学院上海201203

出　　处：《计算机应用与软件》2013年第9期92-95,共4页Computer Applications and Software

基　　金：国家科技核高基重大专项(2009zx01039-003-002-003)

摘　　要：流媒体应用的迅速发展,以及各种无线设备的应用提升了对视频转码的需求。传统转码方案依赖单一服务器,存在效率低和单点依赖问题。设计一种分布式流媒体计算框架,并基于该框架实现了分布式转码系统。该系统具有高转码效率、鲁棒性高的特点。同时,提出面向转码的负载均衡方案有效降低了转码的处理时间。测试数据表明通过该系统转码流媒体,处理时间可降低70%。Fast development of video streaming and the applications of various wireless devices increase the demand in video transcoding. Traditional video transcoding solution relies on single server, which has low efficiency and single-node-dependency problems. We design a distributed video streaming computing framework, and implement a distributed transcoding system based on the framework. This system has the feature of high transcoding efficiency and robustness. At the same time, we also present a transcoding-oriented load balance strategy which effectively reduces the transcoding time. Testing data shows that the distributed transcoding system can reduce the transeoding time for streaming media by 70%.

关 键 词：流媒体 分布式系统 转码 负载均衡 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]