The video is total misinformation, and not scientific at all.
First off, the lector doesn't know whether or not the plane travelled a certain path, in other words, his marking of the path is pathetic, because the plane could as well have flied higher, lower, or any other path.
Second, the quality of video is overall, (pardon my French) crap. If you want to see a video of flight 175 flying into the tower from a distance, go here:
http://www.youtube.com/watch?v=i0DRvPmyKvsThird, if it was so easy to fake videos, why didn't we get a clear video of Pentagon attack?