Making rotoscope animation is easy with Animation Desk. Rotocoping is a common technique to capture and movement of characters with the help of the real-life scene.
If you are interested to know more about this technique, please read on "SECRET WEAPON FOR ANIMATORS: ROTOSCOPING".
You can build animation upon the existing videos. Select “Camera Roll” when creating a new Sequence.
After importing your videos. You can edit the video FPS or enable the app to rotoscope the video.
Below is the rotoscope effect,