I've got a server that shows its listening on 5080 and 1935. I can http://mysite.com:5080
and get the "This page is used to test..." page. I can log in as the WP admin and have access to the Live Streaming settings. I installed BuddyPress and took all its defaults, setting up a multi-group forum structure.
At no point in this process was I ever able to find, anywhere in the UI of either the admin or normal users (who are authorized to start their own streams) where I could initiate a video broadcast.