IP网络实时媒体应用系统的设计及实现  

Design and Implementation of IP Network Based on Real-time Multimedia Application System

作　　者：田红鹏[1] 

机构地区：[1]西安科技大学计算机系,陕西西安710054

出　　处：《工矿自动化》2004年第4期4-7,共4页Journal Of Mine Automation

摘　　要：首先分析了网络实时媒体的相关协议RTP和RTCP ,然后在DirectShow平台上设计了两组过滤器分别用于音频流和视频流的发送与接收 ,实现了IP网上音频 /视频媒体流的实时传输 ,并提出了一种崭新的网络实时媒体应用系统开发模式 ,即组件化程序设计方法 +RTP协议。实验表明该模式下的应用系统具有实时性好、容错性强、扩展性强、代码重用率高、支持应用系统间互操作等特点。Real-time Transport Protocol (RTP) and Real-time Transport Control Protocol (RTCP) of network based on real-time multimedia application were discussed at first. Then on the platform of Microsoft's DirectShow, two sets of DirectShow filters were constructed to implement sending and receiving of audio and video data on IP network. Furthermore, a model was proposed to develop net-based real-time multimedia application, that is, COM-based programming + real-time transport protocol. Finally, the experiments showed that applications based on the model can achieve good real-time, strong error-tolerance and extensibility, high reusability and good inter-operability.

关 键 词：网络 应用系统 实时媒体 过滤器 RTP RTCP DIRECTSHOW 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]