【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。更多还原

【Abstract】 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.更多还原