It adopts key techniques,s ucha s softwarea ndh ardware compression, IP multicast and so on.
系统采用了视频数据的软硬件压缩、网络的IP组播传送等一系列关键技术。
参考来源 - 变电站远程视频监控系统
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IP multicast
abstract:IP multicast is a method of sending Internet Protocol (IP) datagrams to a group of interested receivers in a single transmission. It is often employed for streaming media applications on the Internet and private networks.