Since the days of early television, video has been an indispensable part of culture, society, and moving-image media industries. Over the decades, it has been an avant-garde artistic medium, a high-tech consumer gadget, a format for watching movies at home, a force for democracy, and the ultimate, ubiquitous means of documenting reality. In the twenty-first century, video is the name we give all kinds of moving images. We know it as an adaptable...