Construisez un site Web

I have a wordpress site and I would like to add a live broadcasting service like Ustream or twitch I want all users coming to my site can broadcaster live. users must first choose the category or will be adding live stream example : video games, news. and I want the live stream is displayed on the home page by category. you can take this example site that also uses wordpress [login to view URL] before paying anything I want a demonstration of the freelancer he can do is if I want to drop . and I wish quequ'un who understand French minimum Best regards