"Nuke Tutorial Remove a Drone Shadow Using Projection Mapping and Timeoffset" made by me - How to remove moving objects, in this case the shadow of a flying drone by using projection mapping and timeoffset. I came up with this technique while I was working on a minute long drone shot. It is useful when the shot is very long, and if you try to remove something by making patches and tracking, you would have to framehold so many different frames.