Meta had a palpable hit last year with Segment Anything, a machine learning model that could quickly and reliably identify and outline just about anything in an image. The sequel, which CEO Mark Zuckerberg debuted on stage Monday at SIGGRAPH, takes the model to the video domain, showing how fast the field is moving. Segmentation is the technical term for when a vision model looks at a picture and picks out the parts: “this is a dog, this is a tree behind the dog” hopefully, and not “this is a tr...