AI is not even required, it would be quite easy to filter out the frequency of the noise from the rotors using technology that has existed for decades if not almost 100 years, indeed Butterworth was designing his filters in the 1930’s
Simple FIR filter won't do the job, noise from the rotors and moving air is wideband and overlaps with signal.
But adaptive filters used in noise-cancelling headphones with separate mics may work. One directional microphone records sound from the scene, the other undirected one records sound of the drone, then filter tries to minimize drone sound component in the signal from the mic by adjusting coefficients of the filter.
If I were a drone manufacturer of this type of camera drone, I would release free/downloadable audio profiles/captures of my drone operating at different speeds, to allow filtering to remove them based on the flight profile... (Maybe keep a log of propeller speeds, sync'd to the video)
