You need HLS stream, checkout owncast. Then link the stream from dashboard with "manual stream" option, it should be .m3u8 link
nostr:npub1v0lxxxxutpvrelsksy8cdhgfux9l6a42hsj2qzquu2zk7vc9qnkszrqj49 can I create a stream on zap.stream using my own rtmp endpoint?
Discussion
I have one too. I must be going blind, I really looked around the menus and didn't find any "manual stream" option. I'll try again later