Hello, I have found a lot of old posts with fractured informtation related to what I'm trying to acheive, but no simple config examples.
Basicall, I have been tasked with enabling IPTV on a bunch of cardio machines in a gym (ie. treadmills, excersise bikes etc.). Documentation on protocols supported by the machines is limited to say the least. However, what I do have tells me that the machines will connect to any IPTV stream the is Multicast UDP or RTP. Following the info I've found so far, I've enabled HDHomeRun emulation on the thvheadend server, and also SAT>IP. I'm not sure if either is intended for what I need, but other posts of similar nature suggest that it is.
After enabling both settings, and restarting the tvheadend server the SAT>IP page looks as follows:-

And netstat -tulpen returns the following:

From this, I assumed adding going to VLC and opening a network stream at udp:@239.255.255.250:1900 would connect to the stream for me, but alas this doesn't work.
Similarly. the command ffplay -i rtp://tvheadend:554/unicast returns bind failed: Permission denied
Any help appreciated please.