基于RTP的实时视频传输系统  

Real-time video transmission subsystem based on RTP

作　　者：许华荣[1,2] 李名世[3] 

机构地区：[1]福建师范大学福清分校 [2]厦门大学物理系,福建厦门361005 [3]厦门大学计算机科学系

出　　处：《计算机工程与设计》2005年第4期876-878,共3页Computer Engineering and Design

基　　金：国家973重点基础研究发展规划基金项目(G199803040803)

摘　　要：实时视频流技术在可视电话、远程教育、视频点播等方面得到广泛应用。网络实时视频系统一般分为4大模块:采集子系统、编码压缩子系统、传输控制子系统和输出子系统。其中传输控制子系统是实时视频流的一项关键核心技术。提出了基于RTP/RTCP协议构建实时视频传输控制子系统,传输层通信使用UDPSocket完成。对于RTP/RTCP协议的封装和UDPSocket使用标准C++和Berkeley标准Socket库完成,不依赖于具体的平台,具有良好的可移植性。Thereal-time video streams technology is used widely in such aspects as videophone, distance education andvideo on demand. The network real-time video system is generally divided into 4big modules: capturing subsystem, compressed coding subsystem, trans- mission and controlling subsystem and output subsystem. Among them transmission and controlling subsystem is the key technology of real-time video streams. How to built transmission and controlling subsystem is proposed based on RTP/RTCP agreement, and UDP socket is utilized to realize the communication between transport layers. Standard C++ and berkeley standard socket storehouse are used to finish the encapsulation of RTP/RTCP agreement and UDP socket. This subsystem does not depend on the concrete platform so it has good portability.

关 键 词：实时视频流 RTP 传输控制系统 编码压缩子系统 RTCP协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TP37[自动化与计算机技术—计算机科学与技术]