基于HLS的微课移动流媒体系统构建  

Construction of Micro-lecture Mobile Streaming Media System Based on HLS

作　　者：吴伟信[1] WU Wei-xin(School of Educational Science, Quanzhou Normal University, Quanzhou Fujian 362000)

机构地区：[1]泉州师范学院教育科学学院

出　　处：《广东技术师范学院学报》2019年第3期82-86,共5页Journal of Guangdong Polytechnic Normal University

基　　金：2012年泉州市科技项目(2012Z123);2012年福建省教育厅A类科技项目(JA12282)

摘　　要：目前,移动流媒体系统存在网络链路不稳定,带宽有限,移动终端呈现微课视频的高时延,数据缓冲频繁,用户体验差等问题,提出了动态码率自适应的微课移动流媒体系统.详细分析了构建方案系统实现的关键技术,通过服务器端应用Direct Show技术和FFmpeg程序实现微课视频的内容准备,应用Nginx服务器技术实现微课视频流内容分发系统,在客户端应用HTTP Live Streaming技术方案的Client组件实现播放功能上,提供适合当下带宽的最平滑播放的流式文件,尽最大可能为移动终端提供最佳用户体验.In order to solve the problem of unstable network link, limited bandwidth, high start-up delay of micro-lecture video in mobile terminal, frequent data buffering, poor user experience and so on, a scheme of mobile streaming media system construction based on dynamic rate adaptation was proposed in this study. The key technology of the system was analyzed in details, DirectShow technology and FFmpeg program were applied to realize the content preparation of micro-lecture videos, and the content distribution system of micro-lecture video stream was implemented by using Nginx server technology. The HTTP Live Streaming Technology Scheme was applied in the client component to achieve the play function. According to the change of the network condition, the proposed system can switch the stream timely, provide smooth stream file suitable for the current bandwidth, and provide good user experience for the mobile terminal.

关 键 词：HTTP LIVE STREAMING 微课 移动流媒体系统 自适应 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]