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Asked: 2026-05-23T03:11:20+00:00

Hi I’m trying using vlc to broadcast UDP stream within a LAN, Making it

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Hi I’m trying using vlc to broadcast UDP stream within a LAN, Making it like a TV channel.

I used command line to launch VLC which then vlc is ok to run = 

cvlc --repeat filename.avi --sout '#standard{access=udp,mux=ts,dst=239.255.12.42:8001}

problem is it works on some network, and I have problem receiving it on a network without router!

Question: what is some magical about the address “239.255.x.x” ? what network hardware is require for UDP broadcast besides switches and cables? Does wireless can accept UDP broadcast?

Thanks for your answers!

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  1. Editorial Team

    The 239.255.x.x addresses are part of the multicast address space, ranging from 224.0.0.0 to 239.255.255.255 (and there are some specific-use areas in there).

    You’ve correctly noted that it doesn’t work without a router. This is because the basic IP stack still wants to know how to route those addresses to determine which interface to send them on. You can either add a static route for multicast (that address or all multicast addresses), or put in a default gateway.

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