IMPORTANT UPDATE : I have posted a higher-resolution version of this study (extracted from the original DVD of the Naudet's movie "911") here : "THE PLANE FACTS " : http://www.youtube.com/watch?v=wkZKOq...
SEPTEMBER CLUES website: http://www.septemberclues.info (Please watch my SEPTEMBER CLUES research documentary (90min) before leaving any comments on this video, thanks).
911 AMATEUR pt2 : If someone asks you to see a video of the WTC exploding with no plane in it, here's your best choice.
The Naudet footage is perhaps the most diffused of all the 9/11 images so there is no possible question in regard to its "authenticity" - so to speak. It was included in the Naudet brothers feature movie "911" distributed by Paramount - all over the world's cinema halls.
My analysis here has consisted - as usual - in slowing down the video, check it frame by frame and occasionally crop (enlarge) some shots to view the fine details. (As ever, I have of course NOT altered one single pixel of the material ).
MAIN EVIDENCE OF MISSING AIRPLANE : We may observe that the visible right side ( not covered by 1st explosion dust) of the tower remains intact until 6 seconds after impact . Indeed, more than 30% of the wall is still intact - AFTER the 1st impact. At the 6sec mark we see shape charges igniting and eventually ripping open the wide plane-shaped hole we all remember.