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Frame rate up-conversion (FRC) is the process of increasing the temporal resolution of a video sequence by synthesizing one or more intermediate frames between two consecutive frames. A low frame rate causes aliasing , yields abrupt motion artifacts, and degrades the video quality.
In the United States and other countries where television uses the 59.94 Hz vertical scanning frequency, video is broadcast at 29.97 frame/s. For the film's motion to be accurately rendered on the video signal, a telecine must use a technique called the 2:3 pull down (or a variant called 3:2 pull down) to convert from 24 to 29.97 frame/s.
Unlike NTSC's telecine system, which uses 3:2 pulldown to convert the 24 frames per second to the 30 fps frame rate, PAL speed-up results in the telecined video running 4% shorter than the original film as well as the equivalent NTSC telecined video.
This is a list of films with high frame rates.Only films with a native (without motion interpolation) shooting and projection frame rate of 48 or higher, for all or some of its scenes, are included, as are films that received an official post-conversion using technologies such as TrueCut Motion.
Also, other patterns have been described that refer to the progressive frame rate conversion required to display 24 frame/s video (e.g., from a DVD player) on a progressive display (e.g., LCD or plasma): [11] 24 frame/s to 96 frame/s (4× frame repetition): pulldown is 4:4; 24 frame/s to 120 frame/s (5× frame repetition): pulldown is 5:5
NTSC to PAL conversion also tends to blur each film frame into the next, and so is seen as a sub-optimal way to view film footage. 30p can be preferable over 24p since performing a standards conversion to 25i PAL has fewer technical complexities – any NTSC–PAL converter will do. The larger differences between the 30p and 25i framerates will ...
Deinterlacing: converting an interlaced video signal into a non-interlaced one; Field (video): In interlaced video, one of the many still images displayed sequentially to create the illusion of motion on the screen. Federal Standard 1037C: defines interlaced scanning; Progressive scan: the opposite of interlacing; the image is displayed line by ...
AVCHD Lite cameras duplicate each frame of 25fps/30fps video acquired by camera sensor, [21] producing 720p50/720p60 bitstream compliant with AVCHD and Blu-ray Disc specifications. As of 2013, AVCHD Lite seems to have been all but replaced with other formats.