基于组播的视频信息传输技术研究

Research of Video Data Transmission Based on the Multicast

组播传输技术能够实现一点对多点的数据通信.在视频监控系统中,常常遇到一个视频服务器同时向多个客户端传输相同的实时视频信息.为了有效地利用网络资源,可以采用组播传输技术来实现实时视频信息的传输.论述了组播传输技术的原理和相关的路由协议,设计了一个视频信息的采集系统,分析了实时视频信息组播传输网络.讨论了Simulcast技术和分层组播技术,用来改善客户端接收的视频质量.

The technology of multicast transmission can carry out a communicati on from one source end to some target ends.In video monitor system, one video se rver often transmits same real time video data to some clients.In order to use n etwork resource in effect, the technology of multicast transmission is used to t ransmit real time video data.The paper describes the principle of multicast and its route protocol, designs a system of collecting video data,and analyses a ne twork of real time video data transmission. Simulcast and layered multicast tech nology of the video data transmission, which can improve quality of video data received by clients,are also discussed in this paper.