What major improvement did the invention of the rotoscope bring to animation?

The invention of the rotoscope brought a significant advancement to animation by allowing animators to trace over live-action footage. This technique made it possible to create more realistic and fluid movements in animated sequences by providing a framework based on actual human motion. By using the rotoscope, animators could capture the nuances of live action and translate them into animated characters, resulting in animations that were more lifelike and expressive.

This method became particularly valuable in creating believable character animations, as it eliminated some of the guesswork and stylization that earlier animation techniques relied on. The ability to trace movement directly from film also expanded the storytelling possibilities in animation, making it possible for animators to incorporate complex actions and interactions that drew viewers' engagement. Overall, the rotoscope was a pivotal tool that bridged the gap between live-action and animated content, enhancing the quality and realism of animation.