Holy shit.
This guy takes a couple of minutes of audio from a security camera anywhere in the US, with no clues from the video whatsoever, and finds the exact spot where it was recorded.
How?
By correlating the Doppler curve sounds from two almost inaudible planes passing by with public ADS-B flight data.
https://www.youtube.com/watch?v=UytYrhYLOKI (29 min)
I think this is the #OSINT video of the year.
I discovered a sound that leaks your exact location (and it's everywhere)
YouTube
Two thoughts about this method:
1. They assume a constant base frequency that only shifts because of the Doppler effect, but I'd argue you can get more precise results if you consider frequency changes due to flight maneuvers, changing speed etc., too.
2. You could combine this method with ENF analysis to narrow down the date and/or time.
https://en.wikipedia.org/wiki/Electrical_network_frequency_analysis
https://www.youtube.com/watch?v=e0elNU0iOMY (6 min)
The hidden background noise that can catch criminals
YouTube
Electrical network frequency analysis