Video Live chat using Yii framework

I need the video live chat feature to create using Yii framework +html5. This to integrate to another website which is not started yet So need to complete the video live chat first Video calling with up to six users and live video appearances and chat features and file sharing. The chat feature will allow private messaging between any of the users participating in the call; allowing the user to speak privately with any of the conference participants without the other users being able to see what is being said. Privacy settings can require approvals or PIN exchanges prior to the video-call. Private one-on-one video calls will allow members to chat privately face-to-face via webcam, The Blind-Call feature is an option available for all video calls which allow users the option to not appear on camera (as well as for those who do not have a web-cam or video compatible phone) During the call the user’s profile photo would appear where the video window would normally. Conditions -------------------------- 1. Should use Yii frame work with html5 2. Need this feature by using some new technology available in Yii, don't use Flash. 3. I will give the design of the chat feature