Generally speaking, frame rate is how many images (frames) of an animation are appearing on your screen per second. It is measured in frames per second (aka FPS). The term applies equally to film and video cameras, computer graphics, and motion capture systems.
For video frame rate, a low frame rate will create a flickering effect and makes video a bit choppy. A high frame rate, however, can add more fluidity to the video and make it more enjoyable. Yet, a video with a higher frame rate may be refused and unplayable since some devices only accept a certain standard value of frame rate. Actually, there are some common-used main frame rate standards for video: 23.97 fps, 24 fps, 25 fps, 29.97 fps, 30 fps and 60 fps.