It is providing a mechanism to make it significantly more difficult for the end-user to directly copy/retain the video as it is being streamed to them. 7.3 in t

It is providing a mechanism to make it significantly more difficult for the end-user to directly copy/retain the video as it is being streamed to them. 7.3 in the spec is the best example demonstrating how the license model of this implementation differs from how SSL behaves.