MPEG-DASH技术在网络广播中的应用  

Application of MPEG-DASH Technology in Network Broadcasting

作　　者：常勇 吴绪杰 王晓丹 CHANG Yong;WU Xujie;WANG Xiaodan(Yangfengshan TV FM Broadcasting Station,Xiangxi Autonomous Prefecture,Jishou 416000,China;Pingyin county Media Center,Jinan 250400,China;Shenyang Radio and Television Station,Shenyang 110000,China)

机构地区：[1]湘西自治州羊峰山电视调频转播台,湖南吉首416000 [2]平阴县融媒体中心,山东济南250400 [3]沈阳广播电视台,辽宁沈阳110000

出　　处：《电视技术》2025年第2期180-182,共3页Video Engineering

摘　　要：随着网络广播的蓬勃发展,其面临着网络环境多变、终端设备多样以及内容更新管理等诸多挑战,对流媒体传输技术提出了更高要求。MPEG-DASH技术作为基于超文本传输协议(Hyper Text Transfer Protocol,HTTP)的动态自适应流媒体技术,在应对这些挑战方面展现出较大潜力。基于此,深入剖析MPEG-DASH技术的原理及其在网络广播中码率自适应、多终端适配、HTTP协议利用以及内容更新与缓存等方面的应用,旨在为优化网络广播服务、提升用户体验提供理论与实践参考。With the booming development of Internet broadcasting,it is faced with numerous challenges such as variable network environments,diverse terminal devices,and content update management,which pose higher requirements for streaming media transmission technologies.MPEG-DASH technology,as a dynamic adaptive streaming media technology based on Hyper Text Transfer Protocol(HTTP),shows great potential in addressing these challenges.This paper aims to conduct an in-depth analysis of the principle of MPEG-DASH technology and its applications in aspects such as bitrate adaptation,multi-terminal adaptation,utilization of the HTTP protocol,and content update and caching in internet broadcasting,with the expectation of providing theoretical and practical references for optimizing internet broadcasting services and enhancing user experiences.

关 键 词：网络广播 码率自适应 多终端适配 内容更新与缓存 

分 类 号：TN931.2[电子电信—信号与信息处理]