在现场直播的同时还可以把直播的内容存储下来,作为定时广播或者点播的节目源。对于定时广播节目 IPTV 使用可节省带宽的 IP 多点发送方法即组播(Multicast)方式,该方式允许“一发多收”式节目发送。使用这种方式,网络为每个节目只发送一个实时数据流,而与收看节目的人数无关。这样就可以将节目发送给几个、几十个、几百个,甚至几千个用户而不需加重带宽的负载。 In the live broadcast at the same time you can also save the contents of the broadcast, as a regular broadcast or on-demand program source. For the regular broadcast IPTV use bandwidth-saving IP multicast transmission method that is multicast (Multicast) mode, which allows “over one payment ” program to send. In this way, the network sends only one real-time data stream for each program regardless of the number of people watching the program. This allows programs to be sent to a few, tens, hundreds, or even thousands of users without the need to increase the bandwidth of the load.