Heh, I'm having a hard time trying to explain it...
Ok, the UFO is immobile in front of the helicopter. Then it starts travelling very fast towards it. In just 6 frames it travels the distance. Well, in the 2 last frames, the UFO is passing the helo from front to back by the side. It almost touches the cockpit glass at the 3 o'clock position traveling to somewhere between the 4-7 o'clock region. But then, when the camera turns to the right, the smoke trail is not following the same path the UFO travelled. It goes up in front of the helo, not at the side. The point where the smoke trail crosses the helo level is not where it should be, right by the helo side, but in front of it. I mean, the UFO passes by the helo side and THEN starts climbing, but the smoke trail start the climb BEFORE arriving at the helo position. (Hell, I have the Minus
Syndrome
)
As for the buildings moving, from second 8 to second 14, there are two buildings that can be seen thru the window at the back of the woman, one appearing at second 8 with green roof and another appearing at second 12. Both are clearly moving, the second one faster, as it's nearer.
Then, the video capture... as Daff says, video doesn't works like photo or cinema cameras. It doesn't blurs a fast object, it captures it in two fields (I don't know if that's the correct word). Two fields, interlaced, make a frame. So instead of a blurred UFO, we should see two UFOs intelaced. There are distance/time flaws too. The object travels an enormous distance in the first 4 frames when approaching the helo, and then... it stays near it for 3 frames more. In the las two frames it travels less than 0.5 meter
Also (and this is pure guess by my part) the object leaving the smoke trail, in some frames, has the appearance of a little plane... could it be a RC or acrobatic plane pasted on the video?