text: When approaching an object then both happens.\n\nSee, as the image approaches real time then it must speed up in order to catch up with real time.\n\nHave two video tapes, one travelling normal and the other is 8 minutes behind. In order to get the one behind up to scratch you must speed it up... as it speeds up it approaches the real time. Once it gets to real time then it stops speeding up and matches real time image.