How to record a relayed stream on server using TURN

Question

So here's the story, I'm building a WebRTC app and I have to record the stream on server.

"WebRTC is p2p dude, choose a media server"

Yes, I know, please avoid this comment ;)

But then I tought about one thing, what if I force all the stream to use the TURN server. The packets are going through the server, so I guess I can take them and save it

The question is how to do this.

Any suggestions?

Answer 1

TURN servers are intended to be relayed media, which means that media streams are not decrypted, mux'ed, processed, or recorded. I get that you're asking to avoid the "choose a media server" comment, but that's like saying "I need put in this screw; which hammer should I use? Please don't tell me to get a screwdriver." - The hammer isn't the right tool.

You can still use WebRTC and p2p, but the media server (like Jitsi, for example) acts as a peer in a star topology, where all streams are sent to the media server, and can be recorded, relayed, bundled, etc.

Answer 2

You can use a WebRTC gateway like Janus or Kurento (I assume you have figured it out by now :) )