title: I want to stream video from my webserver, but I only want it to stream when there is a viewer
body: <p>This might seam like a really stupid question.  I'm trying to set up a webcam to watch my fish while I'm away, and I want it to be on all the time, however, I have a bandwidth cap, so I can't have it streaming all the time.  I was hoping to develop some sort of application where it will start streaming whenever a user connects and cease streaming whenever the user disconnects.  Is this possible?</p>