What is Frame Rate?
This refers to the measure of the number of consecutive images called frames. In other words, the frequency of consecutive frames at which they are displayed in animation is called a frame rate. This is done to create the illusion of motion. It’s usually measured by the frames per second or ‘fps’. This means that if a video is played at 35 fps, then each second of the video displays 35 still images and because they are played at a high speed, our brain perceives them to be in motion.
The frame rate actually impacts the way a video is shot and its viewing experience. Choosing different frame rates will have different outcomes. On top of that, you have to remember that multiple factors like how real you want your motion picture to be, if you want to use slow-motion or other such effects will be decided when you choose a frame rate. For example, the majority of the movies you see nowadays are projected at 24 fps. This is because this frame rate is very similar to how we see the world, so it helps create a cinematic look. The Frame rates for television and film have a specific set standard decided by The Society of Motion Picture and Television Engineers (SMPTE). 
Additional information
The video clips that have a lot of motion, like a video game or a sports event, mostly have a higher frame rate because they have to capture a lot of motion and hence a higher frame rate helps in keeping the motion smoother and more crisp for the viewer.
Frame rates can also be referred to as frame frequency and can be measured in Hertz (Hz). A higher frame rate also excludes the shake and blur effect caused by hand movement. This eventually means that you won’t need a tripod or some other stable camera-holding device. Frame rate is used widely in video cameras, motion capture, film, or computer graphics.
