Reseach And Implementation Of Streaming Media Real-time System Based On RTP

Streaming media technology is a hot issue in research these year.With the development and popularization of Internet, streaming media technology is widely applied in network, such as video conference, VOD, IP telephone and remote education. It has been applied from laboratory to commercial field.Real-time transmission of streaming media have three main feature. The first is the need of wide bandwidth, the second is the high real time need and the third is the gusty data.However,the status of current network is narrow bandwidth,unpredictable delay while transmitting multimedia data,and appearing the phenomenon of losing package. How to resolve the confliction between the need of multimedia stream transmission and the status of current network is a defiant task.By the study of RTP/RTCP protocol,video encod/decode technic, DirectShow, timestamp and multicast, the paper brought forward the design project of streaming media real-time system based on RTP.The system has the function of video/audio capturing, encoding, network transmission,decoding,storage and playback.It resolved some problems such as streaming media transmission on narrow banwidth better.These functions were accomplished by software with using MPEG-4 standard to encode and decode video stream. Because of the little investment on hardware,the system has the virtue of low cost and easier upgrade.Accoding to design project,the paper finished the development work and the function of capture,encodeing,real-time transmission,decoding and playback.