I. Introduction
The industry of governed video streaming has been mostly a niche market so far, but the pre-requisites for a massive take up of so-called IPTV solutions and services are all in place. From the one hand, the growing number of terabytes of user generated content on the web and the new generation of video services on the Internet is attracting the interest of many operators to design and deploy solutions for distributing content in a way that respect the content rights holders. From the other, the limitations in the current proprietary Digital Rights Management (DRM) solutions felt by many operators and governments are pushing for the design and the development of new alternatives.