The speed at which they’re shown tricks your brain into perceiving smooth motion. So, if a video is captured and played back at 24fps, that means each second of the video shows 24 distinct still images.
In the most simple terms, frame per second means how many frames are squeezed into one second of video. It’s usually expressed as “frames per second,” or FPS.
Frame rate, then, is the speed at which those images are shown, or how fast you “flip” through the book.
