You can play with the camera settings yourself using the default Dashboard.
http://www.chiefdelphi.com/forums/at...chmentid=13851
That way you can see how visually appealing the video stream is as you play with the settings.
It doesn't give true bandwidth, like transmission overhead, just the bandwidth based on the size of the video itself.
You need to at least hold the combined video stream under 5Mb/s, but the less the better because higher rates start impacting your packet transit times.
Maybe 50% compression and 15fps, but I'd have to play.
Last year we used two cameras, but kept the bandwidth to about 1Mb/s for the combined video streams.