MPEG streams are complex media composed of streams of several layers and real-time Transport Protocol (RTP) is for real-time multimedia data transmission.
MPEG流是由多个层次构成的复杂的媒体流，实时传输协议(rtp)是针对多媒体数据进行实时传输的协议。
PC power has reached a level close to that needed for procession television and sound data streams in real time, multimedia was born.
电脑的能力达到实时处理电视和声音数据流的水平，这时多媒体就诞生了。
The conception of quality of server, the require of the real-time communication of multimedia data for network is also need to be known.
服务质量的概念、多媒体应用对网络的需求、音频和视频的网络需求、多媒体数据实时通信时对网络的各项要求也需要了解。
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