realistic video shenanigans

As video technology improves, it becomes more difficult to trust. At MIT, they've gotten good enough at manipulating video images, that they are literally putting false words in people's mouths:

A specialist can still detect the video forgeries, but as the technology improves, scientists predict that video authentication will become a growing field - in the courts and elsewhere - just like the authentication of photographs. As video, too, becomes malleable, a society increasingly reliant on live satellite feeds and fiber optics will have to find even more direct ways to communicate.