Frame
rate, when concerning photography, is the amount of individual video frames
that the camera captures, per second. Frame rate comes in a few different
standards (expressed as frames per second or fps): 24fps, 25fps, 30fps, 60fps,
and 120fps. Frame rate stems from the very first silent films. Film would first
be placed on a reel, and then cranked by hand by a camera operator, after which
the projectionist would playback the film at the same frame rate that it was
recorded at. Due to this, frame rate can be thought of as flip books, with each
new drawing on a piece of paper representing a frame. When one flips through,
they can see all of the frames blended together as one continuous moving image.
With that in mind, if one has a frame rate of 24fps, in one second, the camera
is capturing 24 individual frames, and when played back, it displays as just one
continuous video.
No frame
rate can necessarily be considered the best. This is because each one has its
own specific use case. For video on the Internet and film, 24fps is the
standard, due to this frame rate being the most cinematic, and appearing the
most natural to the human eye. For live television, sports, and soap operas,
30fps is common. 30fps has six more frames per second than 24fps, giving it a
smoother feel that works well for live television, but is less cinematic.
60fps, 120fps, and higher frame rates are generally used for recording video to
be played back in slow motion.
https://wistia.com/learn/production/what-is-frame-rate
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