AI can doctor videos to put words in the mouths of speakers

New Scientist 

Artificial intelligence can put words right into your mouth. A new system takes a still image of a person and an audio clip, and uses them to create a doctored video of the person speaking the audio. The results are still a little rough around the edges, but the software could soon make realistically fake videos only a single click away. It works by first identifying facial features using face-recognition algorithms. As the audio clip plays, the system then manipulates the mouth of the person in the still image so that it looks as if they are speaking.