I want to record a short clip of an airplane Propeller in slow-motion. The video part is no problem for me since Im using a Gopro 4 with 240fps. When reduce the speed to 10% using Finalcut I get a nice turning prop, but the sound is just gibberish. I have an external microphone.
How can I do this? I think this is not a software problem, is it? I also have an Iphone where I could the microphone to, is it able to record a "high enough sampling rate" (?) to make it possible?
EDIT: Fixed, it was a software "Problem". I just turned off pitch shifting in Final Cut