Why doesn't the movie get stuck in frame 24?

Movies usually have 24 frames, so 24 frames are visually acceptable.

When the frame rate is higher than about 10- 12 frames per second, it will be considered as coherent. This phenomenon is called visual persistence, and the principle of animation is based on this. Although the movie only has 24 frames per second, each frame contains information for a period of time, while the game only contains information for that moment.

A film is exposed for a period of time, and each frame contains a piece of information. The length of this time is determined by the shutter time (it will not exceed 1/24 seconds), so each frame in the video contains a lot of information. The first frame of the game contains the information of the 0 th second, and the second frame contains the information of the 1/24 th second. It's just that the information at this moment is completely lost, so it seems to be stuck.

Dynamic fuzzy

Dynamic blur refers to the motion track smear caused by the camera shutter moving slower than the object. The important difference between 3D game and movie is that movie is a record of real light and shadow, while 3D game is a real-time rendering of 3D model shape/position. The former will have dynamic blur, while the latter will not.

A movie is a film/digital photo shot at a constant frequency, which can completely record the light information for a period of time. Generally, for video with 24 frames per second, the shutter of 1/50 seconds will be selected, which is twice as high and can completely record the light information of half a second. These "extra" rich image information will be superimposed together like ghosts, resulting in dynamic blur/smear. Its principle is the same as "light painting", except that the shutter is not a few seconds, but 1/50 seconds.