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RE: They Stole My Idea: Can You Recover Sound From Images?
If you're to film
specific object
from specific distance
using special high FPS camera. (Samsung S10+ can do 960FPS for 0.4sec)
You might was well consider that recording a laser bouncing of a reflecting object is an implementation of the same idea.
You gotta start somewhere. But yes, these implementations are contrived.
edited my comment because CD grooves doesn't come from actual sound. The fist vinyl were though.
Here's a blast from the past that has similarities from the video you posted.