[advanced] Using Nginx to Re-Broadcast

You can use Nginx and the rtmp-module to re-broadcast a single feed (much like Restream.io or Castr.io do). The big gain here is that if you already have the computer and internet that can handle this, it is free besides some time setting up. 

Here is the basic config you will need once installed:

https://github.com/arut/nginx-rtmp-module/wiki/Examples#forward-live-broadcast-service

Here is the homepage for the rtmp-module:

https://github.com/arut/nginx-rtmp-module

Here is a basic guide on setting it up on an Ubuntu machine:

https://sites.google.com/view/facebook-rtmp-to-rtmps/home