http://www.videolan.org/doc/streaming-howto/en/ch02.html#id288450Streaming methods
If you chose Stream to network option, you can now specify the streaming method. Available methods are:
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UDP Unicast: Stream to a single computer. Enter the client's IP address (in the 0.0.0.0 - 223.255.255.255 range).
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UDP Multicast: Stream to multiple computers using multicast. Enter the IP address of the multicast group (in the 224.0.0.0 to 239.255.255.255 range).
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HTTP: Stream by using the HTTP protocol. If you leave the Destination text box empty, VLC will listen on all the network interfaces of the server on port 8080. Specify an address, port and path on which to listen using the following syntax [ip][:port][/path].
For instance, 192.168.0.1:80/stream will make VLC listen on the interface carrying the 192.168.0.1 IP address, on the 80 TCP port, in the /stream virtual file.