Adding frames isn’t simply an act of interpolation when it comes to animation. You’d need to understand acting choices as well. The timing of motion and the im

Adding frames isn’t simply an act of interpolation when it comes to animation. You’d need to understand acting choices as well. The timing of motion and the importance of how long a frame is held for is important to how characters are portrayed and the impact of actions. Take a punch or a bounce. The time of contact may be one drawn frame but it may be on screen longer to sell it. What should interpolation do here? If if it smooths everything but the impact, then the impact will feel too sticky and lose its force. Similarly if it smooths the impact as well then it goes by too quick and it feels too weak. Animation is full of these choices and it’s a common problem in video games for example where animators animate at a given frame rate but games can run at variable sampling rates along their animation, causing unwanted artifacts of motion or ruin the performance.