You need a device that captures, compresses it and broadcasts video over Ethernet. You can connect the Epiphan's VGA Broadcaster device to the video source and organize a high quality broadcast for...
U could Google the keyword "video stream capture software" ...Then u can choose one as your wish.
Use Total Video Convertor for windows And Astarte M.Pack For Mac..
Stream capture is when the upper portion of a river basin is diverted from one river basin to another by means of natural erosion.
justin.tv,ustream and livestream those are the top sites.