Streamlink with Tvheadend

Hello everyone, i am not an expert and i try to follow this guide "https://cgomesu.com/blog/Tvhlink/#single-livestream-channel" and try to add a streamlink as a new mux. Inside the guide they are using this url (# URL: pipe:///usr/bin/env streamlink --stdout --default-stream best --url https://www.youtube.com/user/france24english/live). I have instead this url (streamlink --http-header Referer=https://rds.live/7507e577-28b5-467a-8424-c03a08d84066 https://p4.stirilepe.net/antena3hd/tracks-v1a1/mono.m3u8 best) that if i run it inside ubuntu terminal is working perfectly. But i do not know how to added inside the tvheaded single livestream url in the same way was done here

This doesn't seem to be related to the thread it was posted in, so I've split it into it's own thread.

Hi. I am also in the beginning of this setup. Perhaps we can help each other? Have you any chat we can connect and talk.

It's a real hassle to set up a stream. Test Streamlink cli first then implement it to TVheadEnd.

If you do this you can understand if it working before TVheadEnd