What script does video file hosting sites like doodstream, streamwish,streamhub and others use?

Hello, these video hosting sites allow you to upload videos share them and earn money. mainly webmasters use them to upload videos and embed them to their site. I was wondering what is the name of the script they are using because all of their layouts front end and backend is bit similar...

does anybody have an idea?

thanks

xvideosharing i suppose