The FB粉絲專頁 Awards: The Best, Worst, and Weirdest Things We've Seen
http://marcojepk084.yousher.com/11-ways-to-completely-sabotage-your-fb-guang-gao
It employs Macromedia flash conversation server for its good quality audio movie compression. It is possible to change the camera bandwidth/compression and quality for flash video chat as per your site prerequisites.