基于HLS的流媒体点播系统的设计与实现  

Design and Implementation of Streaming Media on Demand System Based on HLS

作　　者：叶楠 王龙村 Ye Nan;Wang Longcun(The College of Engineering,Fuzhou Institute of Technology,Fuzhou,350506;Fuzhou Institute of Technology Mobile Communication and Internet of things Fujian Provincial University Engineering Research Center,Fuzhou,350506;Flaircomm Microelectronics,Inc.,Fuzhou,350506)

机构地区：[1]福州理工学院工学院,福州350506 [2]福州理工学院移动通信和物联网福建省高校工程研究中心,福州350506 [3]福建慧翰微电子股份有限公司,福州350506

出　　处：《数字通信世界》2019年第9期38-40,共3页Digital Communication World

基　　金：福州理工学院移动通信和物联网高校工程研究中心开放课题(Kfkt2017003);福建省中青年教师教育科研项目(JAT160618)

摘　　要：为了满足光纤到户、双向网改、五类线场景的覆盖需求,解决多屏终端下流媒体协议的兼容性问题,实现视频播放业务的全IP化,满足统一CDN分发IP视频流架构面向多种类型终端提供服务,本文提出了一种基于HLS协议的流媒体点播系统设计方案,并分析了CDN内容分发的关键技术实现,结合HLS码流自适应的优势特点,解决了组网架构的平滑扩展、流媒体视频加密安全算法、在不同网络环境下高低码率切换、边缘命中率提升等关键问题,极大地提高了基于HLS的流媒体系统功能的可用性,对IP视频平台的业务扩展具有十分重要的意义。In order to satisfy the coverage requirements of fiber-to-home,bidirectional network modification and five-line scenarios,and to solve the compatibility problem of streaming media protocol under multi-screen terminals,the video playback service can be fully IP-based,and the uniform CDN distribution IP video stream architecture can provide services for various types of terminals.In this paper,a design scheme of streaming media on demand system based on HLS protocol is proposed,and the key technology of CDN content distribution is analyzed.Combining with the advantages of HLS bitstream adaptation,the smooth expansion of network architecture,security algorithm of streaming media video encryption,high and low bit rate switching in different network environments and edge life are solved.Medium rate enhancement and other key issues greatly improve the usability of streaming media system based on HLS,which is of great significance to the service expansion of IP video platform.

关 键 词：HLS 流媒体点播 码流自适应 全IP化 

分 类 号：TN929.5[电子电信—通信与信息系统]