_______  is repeating frames to help decrease the number of original frames necessary

The process you're referring to is called "Looping". Looping is a technique used in animation and video production where frames are repeated to decrease the number of original frames necessary. This is often used to create a continuous action without having to create new frames for each movement.

Here are the steps:

1. First, the animator creates the key frames for the action. These are the frames that represent the start and end points of the action.

2. Next, the animator creates the in-between frames. These are the frames that represent the action in progress.

3. Once the key frames and in-between frames are created, the animator can then repeat these frames to create a loop. This loop can be repeated as many times as necessary to create the desired length of action.

4. The loop is then inserted into the animation or video at the appropriate point.

5. The process is repeated for each action that needs to be looped in the animation or video.

This technique can save a lot of time and resources, especially in animations or videos that require a lot of repetitive action.