The difference between "Insert key frame" and "insert blank Key Frame" in Flash

1. Key Frame ):

In the above example, the frame where the movements of the knee are raised and the knees are put down is the key frame. A key frame is different from other frames. It is an animation's starting and ending prototype, during which all animations are changed based on the starting and ending prototype.

A key frame defines the start and end of a process and can be the start of another process. In the above example, the footfall is the starting key frame, and the knee is the end key frame of the footfall process. At the same time, as a continuation of the next action, when the knee is lifted, it can be the starting key frame of the thigh process, and when the thigh is lifted, it is the ending key frame of the process, and so on.

2. Transition frame (FRAME ):

The transition frame is the part between two key frames, which is the transitional part of the change from the starting key frame action to the ending key frame action. During the animation production process, we don't have to worry about the issue of transition frames, as long as the key frames and corresponding actions are defined. The transition frame is displayed in gray.

Tip: since it is a transitional part, the longer the duration of this Part, the smoother the overall action changes, and the more natural the relationship between the action and the action. However, the longer the transition part in the middle, the larger the size of the entire file.

3. Blank Key Frame (blank frame ):

There is no object in a key frame. This key frame is called a blank key frame.

Tip: the usage of key frames and transition frames is understandable. So since there is nothing in the blank key frame, what is the purpose? It can be used a lot. In particular, when an action is to be called, it often requires the support of blank key frames.