Pentagon video sync rate

[Ezlivin]

Now that the DoD has finally released the "missing" Pentagon video, can someone answer a question about the sync rate?

We have two different cameras in two different positions capturing the exact same scene. Each camera is taking images at a fixed rate—its frame rate.

Why do both cameras synchronize? They appear to capture the scene by taking images at the exact same time.

Why was one camera either a bit slower or a bit faster than the other? If I set up two video cameras to record a scene, one can record the 1/30th of a second where the other one isn't. However, each of the Pentagon cameras recorded in "lock step" synchronization as if they both were operating off the same master clock signal.

Can anyone provide an explanation of why two different cameras would sync up like that?

[HuffleClaw]

1. another poster has suggested that the 'two' videos are in fact

the SAME video, just altered a wee bit to appear like different videos. your point about the 'sync rate' is rather interesting, when taken together with this point.

[Duer 157099]

5. I don't think these are the same

[DoYouEverWonder]

2. There is one big difference that I noticed

between video 1 and 2.

In the 2nd video, after the initial explosion and the big red fireball dies down and turns into just black smoke, there is a major flash of light that emanates from the crash site. It does not happen in the 1st video. Those frames appear to be missing.

It happens about 34 seconds into the 2nd video.

[rumpel]

3. The flash

While I also, thought about that flash, it looks to me like a glare effect.

I presume here, that:

the camera or at least the lens sit inside a housing i.e. for example the gate post. What they appear to often do with security cameras is they want to somewhat conceal & protect the camera, therefore they are behind another piece of glass (sometimes dark). Maybe there was something (piece of broken glass) momentarily reflecting the sun directly into the lens? Maybe the glass in the housing momentarily shifted from air pressure (impact concussion), therefore allowing a direct hit of a higher light reading, changing the color balance, until it settled?

Defective tape? (Don't think they are digital are they?)

:shrug:

on edit to clarify

[Duer 157099]

4. But they don't capture the same thing

In one case, it's just the tip of the "white thing" entering from the right; in the other, the "white" goes all the way to the foreground viewblock (camera housing).

What did you evaluate to determine they were synched?

[Applan]

6. Where can one view these "videos"?

Are they posted anywhere online?

[Duer 157099]

8. Here

http://www.youtube.com/watch?v=L75Gga92WO8&eurl=http%3A%2F%2Fwww%2Ejudicialwatch%2Eorg%2Fflight77%2Eshtml

http://www.youtube.com/watch?v=TAaP4Z3zls8

[Duer 157099]

7. Another important question is the shutter speed

of the cameras.

With a plane going 350mph or so, that translates to about 500 feet per second -- and it looks like the view only captures about 500 feet (the distance from the pentagon wall to the road seems to be less than 400 feet).

So, a plane traveling at that speed would go through the whole field of view in less than a second.

[rman]

9. there is a small difference

between two seemingly identical frames from either camera.

see the debris to the left of the fire ball: