Youtube 直播人: All the Stats, Facts, and Data You'll Ever Need to Know

http://spencerdhul929.yousher.com/forget-youtube-zhi-bo-ren-3-replacements-you-need-to-jump-on

It uses Macromedia flash conversation server for its high quality audio movie compression. You could modify the camera bandwidth/compression and good quality for flash video chat as per your site demands.