User`s guide

Broadcasting
QuickTime Multicast
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Wirecast User Guide | 104730
provide a way to define uniqueness among all multicast data flowing over the network.
Once the broadcasting computer is streaming this data through the local network, any
computer on the network can receive it.
The SDP file becomes the glue between your broadcast computer and the viewer
computers. The SDP file contains multicast addresses, encoding format, and other
important information.