Earlier we have worked on Opensource Web-conferencing in Java, BigBlueButton. We could successfully able to run it. Of-course your requirement is different.
Even though we have worked on such application, we shall start your requirements from scartch as it is video conferencing.
Profile: We are a small firm, techvisakha. Mr. Sesha has more than 14 years of experience in handling large IT projects spanning multiple Industry verticals. Our team has nearly 4 years of experience in building windows and web applications using various technologies like Java, Javascript, HTML5, CSS3, j2ee, spring framework, hibernate,jquery, etc..