• IETF - Janus - Meetecho - WebRTC - WHEP - WHIP

    Node.js WHIP/WHEP server libraries

    April 10, 2025 - By 

    We’ve talked many times about WHIP and WHEP on this blog post. Since before WHIP was even a thing on the IETF’s radar, we prototyped it with CoSMo, as it seemed like a great first step towards my dream (and Ph.D thesis topic) of having a pure WebRTC based broadcasting solution. We then covered it even more after it was adopted in the IETF WISH Working Group, until it was time to address how to distribute a WHIP ingested stream using WHEP, and all the updates it then went through. WHIP also was a great opportunity for us nerds to…

  • Janus - Meetecho - SIP - WebRTC

    Dial-out and cascaded mixing with the AudioBridge

    April 3, 2025 - By 

    A couple of years ago I wrote a blog post explaining how I used some existing features in the AudioBridge plugin to allow SIP endpoints to dial-in and join a conversation that would normally be limited to WebRTC participants alone. That worked nicely and, at the time, it also was an interesting opportunity to play a bit with Drachtio as the framework to mediate between the Janus API and SIP. That said, it also showed some limitations: in particular, it only allowed SIP endpoints to dial-in, but there was no way to have the conference bridge “dial-out” instead. As such,…