A Beginner's Guide to FB買讚
http://felixhham294.almoheet-travel.com/10-situations-when-you-ll-need-to-know-about-fb-fen-si-zhuan-ye
It uses Macromedia flash interaction server for its good quality audio video clip compression. You'll be able to change the digicam bandwidth/compression and quality for flash video chat as per your site needs.