You need a crank feature where you have to crank to play it but the speed of the crank effect the speed of the video
I need to check on Playroll.
I wanted to implement this at first, but it resulted in a very stuttered audio. Stopping an image as soon as you stop cranking is not disturbing, but stopping the audio made for a very unenjoyable experience in my opinion. I guess the solution lies in having threshold so that the audio continues for a few milliseconds when you stop cranking (and the images as well).