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Variable frame rate (or VFR) is a term in video compression for a feature supported by some container formats which allows for the frame rate to change actively during video playback, or to drop the idea of frame rate completely and set an individual timecode for each frame.
Frame rates of 25 frames/s and 30 frames/s are not directly available in 720p mode, but can be simulated with frame repeating, when every frame is either repeated twice or a special flag in the video stream instructs a decoder to play every frame twice to adhere to output rate of 50 or 60 frames/s.
Shot entirely at 48 fps. 24 fps scenes achieved by doubling frames. The HFR presentation is available on Apple Vision Pro. [28] 2023: The Last Heretic / El Ultimo Hereje: Daniel de la Vega: Spanish: First Latin American movie shot in HFR. HERONICS: Part 1 Sidharth S Nair English Shot on 24fps. Extended cut to be released on 48fps by frame ...
Frame time is related to frame rate, but it measures the time between frames. A game could maintain an average of 60 frames per second but appear choppy because of a poor frame time. Game reviews sometimes average the worst 1% of frame rates, reported as the 99th percentile, to measure how choppy the game appears.
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 advertised frame-rate of a specific display may refer to either the maximum number of content frames which may be displayed per second, or the number of times the display is refreshed in some way, irrespective of content. In the latter case, the actual presence or strength of any motion interpolation option may vary.
Slow motion is used widely in action films for dramatic effect, as well as the famous bullet-dodging effect, popularized by The Matrix. Formally, this effect is referred to as speed ramping and is a process whereby the capture frame rate of the camera changes over time. For example, if in the course of 10 seconds of capture, the capture frame ...
Decompression (sometimes compression) frame time uniformity – Big differences in this value can cause annoyingly jerky playback. SIMD support by processor and codec – e.g., MMX , SSE , SSE2 , each of which changes CPU performance on some kinds of tasks (often including those with which codecs are concerned).
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