VCrank

VCrank is a real world physical device which allows interacting with the video speed by turning a crank back or forth.
No cranking, no playback.

<iframe src="https://player.vimeo.com/video/29330449" width="640" height="352" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>

kurbeln im museumsquartier from videokurbel on Vimeo.