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。
PC power has reached a level close to that needed for procession television and sound data streams in real time, multimedia was born.
源筛选器提供来自源的原始多媒体数据，如文件、URL或类似照相机的实时源。
Source filters provide raw multimedia data from a source like a file, a URL, or a live source like a camera.
分析了多媒体数据实时传输对通信网络的特殊需求以及当前IP网对多媒体信息实时传输的支持能力和存在的问题。
This article analyzes the special requirement of multimedia real-time transmission to communication network, the support ability and the existent problem of IP network.
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