Location: College Park, GA (very close to Hartsfield–Jackson ATL)
Date/Time: July 2, 2022 at approximately 10:35 PM local
Camera: iPhone 12 Pro Max, 1x lens
Video: Original, unedited file
FPS/Resolution: (from metadata – please see attached file)
Camera movement: Stationary; I did not pan or track
Sound: Very hard to determine sound because I was literally down the street from the airport but with that being said I see planes many times per day and none ever are like this or this fast.
Weather: Cloudy; object appears to be occluded by clouds

Context:
I was already recording a distant stationary/slow-moving light. So then I was just recording the sky in case it reappeared when a second object suddenly crossed the frame. The fast object appears for a fraction of a second, moves across several degrees of sky, and then disappears into clouds. I did not have time to follow it.

Notes:
The fast object appears as multiple (6) light points in some frames, which may be due to camera effects, I'm not sure. However, the motion is extremely fast compared to aircraft I see daily living near ATL. I am not asserting what this is — I'm posting to see whether it can be identified or if it remains indeterminate.

Never shared before because I had no idea this place existed. I have chat gpt to thank for that.

It looks to me to be a reflection of some sort, based on how quickly it moves and how it fades in and out. Did you shoot it through a dual-pane window?

Did you notice the fast light with your own eyes at the time, or did you only see it through the camera, or discovered it later?

I agree it doesn't look like an aircraft.

I am guessing that the "night mode" on the iphone 12 is stacking several exposures, i.e. it basically "adds" several underexposed pictures together to give you more light in the end product.
That means if you have two fast-moving lights, they'll be in separate places on these exposures, and that's how they "multiply" and turn into more dots in the frame. Some of the same "sub-exposures" are used for consecutive frames of the video, which is how some pairs of dots appear in the same place on different frames.
Because of this, you get that dot pattern in digital photography, and not the streaks you would see on a long exposure with chemical film. (If the lights were slower, you'd get get streaks on digital, too, as the dots would touch.)

As Mick noted, the origin may be a single dot of light, reflected in a dual-pane window, which creates two reflections that are slightly offset and move and fade in sync.

There appears to be a small bright(er) feature visible just before the two lights are seen (hard to see above, but more evident watching the video).

An area around the two dots (mainly above them as seen on screen) seems to darken while they're present. Some sort of contrast artefact?
Or just my perception? (indicated area, below, is very approximate).