So, there are two broad approaches to get video to you-unicasting and multicasting.
那么，现在有两种获取视频的主流方式——单播和多播。
As it has advantage of saving network bandwidth which is in scare state, multicasting is widely applied on audio and video delivery.
多播能节省网络带宽，广泛运用于在音视频传输中。
As it has advantage of saving network bandwidth which is in scare state, multicasting is widely applied on audio and video delivery.
多播能节省网络带宽，广泛运用于在音视频传输中。
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