A bizarre video show a helicopter hovering ‘magically’ above the pad, climbing higher and higher as its blades remain almost completely still.
The strange phenomenon boils down to the camera’s shutter speed and frame rate, which can distort the appearance of spinning objects when synchronized.
This is an optical illusion caused by the video camera. It’s shooting at a high frame rate, high enough to match the speed of the rotors.
What results is every frame capturing the rotors in the same position, making them seem motionless with no blur.