While the bandwidth or bytes per second varies with the quality selected and I will NOT write why or explain I do want to share that we used a pair of ethernet connected webcams. Some may say they want to do such a thing but stop short of getting the hardware to do that.
Bob
Does anyone know of a way to stream 2 or more webcams from one machine, and will not eat up bandwidth (wirecast) I was thinking of taking the flash video method (what justin.tv uses) I'll take any suggestions.
again I need to be able to stream 2 or more webcams from a macbook with good fps and wont eat bandwidth. Thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic