What does the term 'frame rate' refer to in animation?

The term 'frame rate' in animation specifically refers to the number of frames displayed per second (fps). This is a crucial aspect of animation as it directly influences the smoothness and fluidity of the visual experience. A higher frame rate results in a more fluid motion, allowing for more detailed and nuanced animation, while a lower frame rate can create a choppy or staccato effect. Frame rates can vary significantly in different contexts; for example, film often utilizes 24 fps, while video games might operate at 30, 60, or even higher frame rates to enhance performance and responsiveness.

Understanding frame rate is fundamental for animators as it affects pacing, timing, and how the animated work is perceived by viewers. The other choices, while related to animation, do not accurately capture the essence of what frame rate signifies. The type of frame used, the length of video clips, and the total frames required for a scene are all important aspects of animation production, but they do not define frame rate itself.