Nah, I think he started filming when he saw the AC on final. Think about it, the aircraft crosses the threshold 26 seconds into this video. So when the filming started it would have been at 200-300 feet finals. You might not see the aircraft initially due to the resolution of this video, but if you were standing on that runway you would have been visual with the aircraft long before the filming started.
Also, watch closely, the cameraman is not filming his mates, he's pointing his camera towards the approach area of the runway, he's actually trying to capture the approaching aircraft.
Notice how one of the workers had the presence of mind to cover his ears..
