Key frame意思

"Key frame" is a term used in the field of animation and video editing to refer to a frame in a sequence that contains significant changes or actions. These frames serve as the foundation or reference points for the movement or animation between them. Key frames are typically used to define the starting and ending points of an action or movement, as well as any major changes in the scene or character positions.

In animation, key frames are the frames that an animator painstakingly creates to define the most important poses or movements. The frames in between these key frames are then filled in by the animation software or the animator using a process called "tweening," which creates the intermediate frames based on the changes between the key frames. This allows for a smooth transition between the defined positions or actions.

In video editing, key frames are used to adjust certain properties of a clip, such as volume, opacity, color correction, or effects. By setting key frames at specific points in the timeline, the editor can control how these properties change over time, creating a dynamic and engaging video.

Key frames are an essential tool in both 2D and 3D animation, as well as in video post-production, as they provide a way to efficiently control and define the timing and movement of a sequence, making the animation or editing process more manageable and allowing for greater creative control.