This is usually where a cadet would shine brightly explaining all the ins and outs of the takeoff requirements but i remember many years ago that you need to clear the screen by 35 feet if dry one engine inoperative and that can include a clearway, if there is one. Also assuming the youtube video would have a different name if they were indeed flying single engine, so one issue with what looks like a late two engine takeoff is if they would have the thrust to go single engine from a earlier point than this takeoff and still clear the screen. All in all i wouldnt take poision on either or before knowing more...