@Edent It is a pity that Firefox Hello got discontinued. Their current recommendation is Jitsi-meet.

@Edent I have been using https://github.com/steiza/sidebar for about a year for this. Like other folks are saying, you need a minimal server (included; that you can self-host) to help the peers find each other, and a STUN server if any links have both peers behind a NAT.

@Edent I’m no expert on the protocols so not sure of the details.

Mirotalk P2P does peer-to-peer for the videoconferencing, but does still rely on a server for setting up the P2P links in the first place.

https://github.com/miroslavpejic85/mirotalk

In my tests the P2P version works fine for up to 4 participants, but after that the browsers tend to struggle a bit without the server talking off some of the workload.

In our peer group we tend to have 4-6 participants so we switched to the SFU version of Mirotalk.