基于RTP协议的移动视频监控系统的设计

摘要

As wireless mobile network is usually unstable,it is necessary to study how to automatically adapt to bandwidth variation for the best result of video monitoring. H. 264 is a video coding standard with high compression ratio, which needs less bandwidth under the same conditions. RTP/RTCP are designed for real-time data transmission. In this system, the video captures terminal packages and sends H. 264 data with RTP, and it receives network transmission quality with RTCP, automatically adjusting transmission rate;the monitoring platform organizes and filters data received, and plays video correctly. Experimental result indi-cates that this design could achieve good results of video monitoring in wireless mobile network environment.%无线移动网络环境稳定性较差，需要研究如何自适应有效带宽的动态变化，以获得最佳的视频监控效果。 H.264是高压缩比的视频编解码标准，相同条件下需要的传输带宽更少。 RTP/RTCP协议专为实时数据的传输而设计。本系统中，视频采集终端用RTP协议封装和发送H.264数据，用RTCP协议接收网络传输质量信息，自适应调整发送速率；监控平台对收到的数据进行整理和过滤，确保视频图像的正确播放。实验表明该设计在无线移动网络环境下，视频监控效果良好。