A higher frame rate makes the image appear smooth. The frame rate refers to the number of times a second an image is shown on a screen. Generally speaking, there's a big difference between the frame rates that are used to film and those that are used to play back videos. Most people enjoy watching video content at higher frame rates. Most people prefer movies and TV shows that are at 30 frames per second (fps). A higher frame rate makes it look like the images are moving faster. There's no real science behind this. It's just a fact that people find higher frame rates more appealing than lower frame rates.