Motion blur is a visual effect used to simulate the blurring of objects in motion. It is commonly used in film and video to create a sense of speed or movement. In After Effects, motion blur can be added to any layer using the Motion Blur effect. This effect allows you to control the amount of blur, the direction of the blur, and the shutter angle.
Motion blur is an important tool for creating realistic animations. It can help to add depth and realism to your scenes, and it can also be used to create stylized effects. For example, you could use motion blur to create a sense of speed in a car chase scene, or you could use it to create a dreamy effect in a romantic scene.