Currently Jitsi is able to stream Live Conference to Youtube Live Streaming. It would be nice if we could stream the Conference Live to any website of our choice using a Media Server (preferably open source)
From my (limited) understanding, Jibri (the Jitsi Meet component that does the broadcasting to Youtube) simply uses ffmpeg to write to a RTMP url that Youtube provides. (rtmp://a.rtmp.youtube.com/…)
So if you want to broadcast the stream to a custom server, you need a RTMP server for Jibri to stream to: https://obsproject.com/forum/resources/how-to-set-up-your-own-private-rtmp-server-using-nginx.50/
Also, because the RTMP URL of Youtube is hardcoded, you would need to modify the source code (only trivial amount of changes), build and host your own instance of Jitsi Meet with Jibri.