Can someone explain multicast streaming? - AVS Forum
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post #1 of 2 Old 12-17-2013, 06:33 AM - Thread Starter
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I've done some reading and I do understand what it is but what I do not understand is how it is used in IPTV world and what is the advantage or disadvantage over unicast.

 

So I tried understanding multicast concept in a very simple iptv set up: e.g.

1. Head end providing 2 channels

2. Some middleware

3. STB

 

From my understanding, Unicast will stream the channels to a port and then you can simply define the link in middleware (192.168.1.10:50000) and watch the channel on STB.

 

How does this all work with multicast?

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post #2 of 2 Old 12-18-2013, 09:13 AM
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Hi, in the context of AT&T Uverse's hardware & software (IPTV powered by Ericsson's Mediaroom), if more than 1 set top box want to watch the same live channel, than the TCP/IP videostream changes from unicast (1 to 1) to 1 to many, with the video stream multicasting, the endpoints are free to ignore the data if they are not watching that channel but it scales to more than one set top box ( I have not tried more than 2 set top boxes, unlikely except perhaps Super bowl or Oscar night ).
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