We've used callaba as a permanent relay solution for live streaming. Streaming the video onto a machine and then being able to make that stream available for anyone on the team is a timesaver. In our case, it's an easy way of broadcasting the stream around the building without hardwiring cables to each room. And it's also available remotely.
Good advice is to attach an elastic ip, if you're on AWS. Then you can just turn it on and go.