When you import video footage into Animation Desk and select “Rotosocpe”, the app converts the video into lines and shapes.
Back in the early time, animators projected (rotoscope) the film onto a glass penal, and they drew according to the projection. Rotoscope was a helpful technique to capture live-action and studying movements.
We gather some interesting examples in this post, How To Rotoscope – Draw Animation With The Help Of Video Camera. In this post, you can see animators and models work together to create the classic scene in Snow White and other animations.