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Frame rate, most commonly expressed in frames per second or FPS, is typically the frequency (rate) at which consecutive images are captured or displayed. This definition applies to film and video cameras , computer animation , and motion capture systems.
In early cinema history, there was no standard frame rate established. Thomas Edison's early films were shot at 40 fps, while the Lumière Brothers used 16 fps. This had to do with a combination of the use of a hand crank rather than a motor, which created variable frame rates because of the inconsistency of the cranking of the film through the camera.
The test subjects' brainwave activity peaked around 60 fps, and they decided to go with that as the norm. [2] Trumbull theorized that although viewers see smooth motion from film displayed at 24 frames per second, the standard for decades, they are subconsciously aware of the flicker, which reduces the film's emotional impact.
Television typically originates at 50 or 60 frames or interlaced fields per second. The flicker fusion threshold does not prevent indirect detection of a high frame rate, such as the phantom array effect or wagon-wheel effect , as human-visible side effects of a finite frame rate were still seen on an experimental 480 Hz display.
As well, the formats must have been used to make more than just a few test frames. The camera must be fast enough (in frames per second) to create an illusion of motion consistent with the persistence of vision phenomenon. The format must be significantly unique from other listed formats in regard to its image capture or image projection. The ...
25i, also known as 50i, is an interlaced format showing 25 interlaced frames per second, or 50 fields per second, and is the standard broadcast framerate for countries with a PAL and SECAM television history (most of the world). The interlaced format sacrifices some detail in vertical resolution in favor of a higher apparent framerate, and can ...
Foot per second; Foot-pound-second system; Frames per second, the frequency (rate) at which consecutive images (frames) appear on a display; Computing.
The amount of frames rendered per second (on average) is called the frame rate. Using common a 60 Hz monitor as an example, the maximum theoretical frame rate is 60 FPS (frames per second), which means the minimum theoretical input lag for the overall system is approximately 16.67 ms (1 frame/60 FPS).