Frames are the individual still images that make up a video or animation. When these still images are shown in rapid succession, they create the illusion of movement.
The Basic Principle
At its core, the way frames work to create motion is quite simple:
- Recording Multiple Images: Cameras, whether for movies or videos, don't record continuous motion. Instead, they record a series of individual pictures, referred to as frames.
- Rapid Playback: These frames are then played back one after another at a very high speed.
- Creating the Illusion of Motion: According to the reference, these frames are played back at such a fast rate that they appear to be in fluid motion. Our brains perceive this quick sequence of still images as smooth, continuous movement.
This rapid display of sequential still images is the fundamental basis of how video, film, and animation work.
Understanding Frame Rate (FPS)
The speed at which frames are displayed is crucial. This is measured by frame rate, also known as FPS (frames per second).
- Frame rate is the measurement of how quickly a number of frames appears within a second.
- A higher frame rate means more frames are shown each second, generally resulting in smoother-looking motion.
- Common frame rates include 24 FPS (standard for cinema), 30 FPS, and 60 FPS. Higher rates are used for smoother motion, slow-motion effects, or gaming.
By recording many distinct still images and playing them back quickly, the technology leverages human perception to trick the eye into seeing seamless motion.
