I have a video of a soccer match taken on a go pro at 4k. I would like to crop to 1080P. I would like cropped field of view to follow several players but never go outside the 4k image. That is I want the cropped view to pan left, right, up, down tracking the main play in the 4k. I understand how to manual pan like one was cropping a letterbox film to 1080p but not sure how to track the players and set limits on where the crop can go and do it more automatically.