First, I'll clear a few things out. I'm an Air Force tech (Canadian) and have flown extensively in civilian and military aircraft. I'll lend a hand explaining why this isn't a light on the aircraft, or a stadium.
1 - Another passengers light it is not. As you watch the video, the external light source distances itself from the airplane. A static passenger light would remain in the same spot regardless of the angle of reflection, it would not start to appear further back in the reflection. So we know that the light source is moving slower than the aircraft.
- The film maker blocks any chance of a successful reflection with his hand. Go to a mirror, hold a flashlight up to one side until you can see it at an angle. Turn off the light, now block it with your hand. No reflection. Common sense should dictate this.
2 - A stadium/baseball diamond, while being the best explanation, I don't believe that this is it either.
- I've flown over many of these and the aircraft would have to be on take off or landing to view it with that shoddy camera with any particular definition.
- The length of time that the light is in sight would mean that the aircraft is banking for several minutes. Consistent with coming around to land at an airport...but it the aircraft was banking you'd see the airport within 20-30 seconds.
- The light stays at the same elevation in relation to the window. It remains in the top 1/3 of the window.
- Pause it at the 17-20 second mark...the lights don't seem right for a stadium.
3 - Wing light : I can tell you, 100% beyond a doubt, from extensive work that I've done with aircraft from around the world, that there should not be any form of bright light coming off of the wing in that area on any aircraft built. There are left and right navigation lights,red on the port and blue/green on starboard in color. There are also lights on the bottom and top of the aircraft that blink. These would not be reflected on the wing.
So there you have it, I'm not a UFO expert, but I have experience with aircraft, from working on them to flying in them, many types, at all times of the day and night. In my opinion this is either a hoax done with photo editing software, the plane was doing a long, slow bank (I don't believe this personally, but it could be possible if the pilot was doing an elliptical type of bank), or it is really a UFO. I tend to believe the latter, that it's another object in fight, going at a slower speed than the airplane.