Which term describes the point at which something changes in video production?

The term that accurately describes the point at which something changes in video production is "keyframe." In the context of video editing and animation, keyframes are essential markers that denote specific points in time where a change occurs in the properties of video elements, such as position, scale, rotation, or visual effects.

When creating animations or transitions, keyframes enable editors to define the start and end points of a change, allowing for smooth motion and effects between these defined points. For example, if you want an object to move from one side of the screen to the other, you would set a keyframe at the beginning (the object's starting position) and another keyframe at the end (the object's final position). The software then calculates the in-between frames, creating an animated effect.

Other terms like "frame," "clip," and "scene" have different specific meanings. A frame refers to a single image in a video, a clip is a segment of video or audio, and a scene generally refers to a series of shots in a continuous narrative context. These terms do not capture the concept of a transition or a defined change point in the way that keyframes do.