I was nonplussed at the idea of video-doctoring, but after watching thru the video again & specifically at the spot you mentioned, I definitely see some weirdness. I attribute this weirdness simply to the camera/motion detection settings, but now I'm not 100% that's what happened.. The clearest way to notice possible "doctoring" points is where the timecode freezes. The timecode is running perfectly smoothly through the video, but at those 2:55ish spots it randomly freezes. That the camera turns on "after" the door has closed a bit suggests to me that either the motion detector is a bit slow, or someone went in and pasted freeze frames from elsewhere in the video. As a video editor, I would be able to to that kind of edit within a few seconds in FCP or Avid. Actually, it wouldn't even be hard to leave the bottom/timecode part of the screen on the lower half alone, and simply place and overlay of the frozen "door" open frames on the upper half, thereby giving little clue that something was manipulated. Still, motion detector is a possibility, which I put at 80% vs the unlikely 20% of video manipulation.
Excellent, we have a conversation! I don't know what you mean by "freeze" as the timestamp doesn't indicate a freeze to me. A freeze in my mind is when a second is delayed longer than a second in length. Is that what you mean? Instead, the timestmap has no such thing, but runs normally until there is a snip, at which point there may be a fractional second, meaning a second that is partially snipped out. For example, the second at 25:11 is very short, and it then jumps to 25:14. To really be able to have this conversation, you need to know how to read the timestamp pixels. Have you learned that yet?
You also need to consider the evidence that the timestamp was pasted in so that the video and the timestamp are like two separate videos, one superimposed on the other.
Here's another point maybe not mentioned yet. The elevator door is suddenly shut by about eight inches near the end of the 25:14th second, and yet virtually the entire 25:14 second exists, no significant snip of that second whatsover is evident. But if this were a normal situation with the video's original timestamp, the 25:14th second would be severely non-existant.
Let me put it another way under the scenario that the camera is motion-activated. As one can see, it takes about a full second for the elavator door to move eight inches, because it takes four seconds (of timestamp time) for the door to go from fully-open to fully-closed. As the door is INSTANTLY closed by eight inches (we don't get to see the gradual opening of that distance) at the near-END of the 25:14th second (I'm seeing it happening at about 25:14.9), it means that the camera did not record the first second of its closing, meaning that most of the 25:14th second should not be on the timestamp, and yet that second is fully there. So, under this camera-stopping-taping scenario, someone goofed up and left this clue, indicating that the timestamp is not the original.
The alternative is that the camera did not cease to tape, but that someone spliced in frames of a fully-open door throughout the eight inches of actual door closure. Why would anyone do that? Arkadiy reports that frames were spliced in between 2:57.019 and 2:57.952 you-tube time, which, according to my video sample, is just a second or less before the door is found instantly closed by eight inches. But then his version of the video may be set a second off from mine.