基于流媒体的天气预报电视会商VOD系统设计  

Design of Video on Demand System for Weather-forcast Video Conference Based on Streaming Media Technology

作　　者：刘红梅[1] 李春来[1] 陈永涛[1] 黄珣[1] 

机构地区：[1]国家气象信息中心,北京100081

出　　处：《电视技术》2013年第14期35-38,45,共5页Video Engineering

基　　金：财政部公益性行业(气象)科研专项(GYHY200806019);中国气象局"全国天气预报电视会商会议系统"项目

摘　　要：结合流媒体技术实施要点,设计了中国气象局天气预报电视会商VOD系统,并对系统的流媒体架构、系统配置架构、软件流程等进行了详细说明。深入分析了系统实施的技术要点,如并发客户端数、流发布类型、信号同步等,设计的系统实现了多路视频信号的采集、上传、直播、点播、下载功能等,特别是视频流和VGA流双路信号的同步、同屏、可控播放。通过实际运行验证,系统运行稳定,有效拓展了电视会商系统的服务范围,有助于天气预报业务的发展。The Video on Demand （VOD） system for weather-forcast video conference of CMA is designed based on the implementpoints of streaming technology, and it＇s described in details about streaming media structure, system configuration structure, software process. The main points in system implementation such as concurrent client number, distributed stream-type, signal synehronizationare analyzed thoroughly. So the multi-video signals can be captured and transferred well for the live ＆ on-demand broadcast and download in the system, and video ＆ VGA dual-signals can be played and controlled especially in one screen display with synchronization.The result shows the system can work steadily to expand effectively the service domain of video conference, and much help can be provided for weather-forcast operation.

关 键 词：流媒体 电视会商 VOD 天气预报 信号同步 

分 类 号：TN919.8[电子电信—通信与信息系统]