Glossary – Apple Cinema Tools 4 User Manual
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2:3:2:3 pull-down A pull-down method that is the same as the 3:2 pull-down method,
except that it is applied by a digital video camcorder (as opposed to any other type of
equipment that could apply the same pattern of pull-down). This manual uses the term
2:3:2:3 when referring to the pull-down that comes from a 24p digital video camcorder;
this type of pull-down can be removed using the automated form of reverse telecine.
See also
2:3:3:2 pull-down A method of distributing film’s 24 fps among NTSC video’s 29.97 fps
when film or 24p video is transferred to NTSC video. In the transfer, the recording alternates
two fields of one frame and then three fields of the next two frames, followed by two
fields of the next frame. In this way, the 24 frames in 1 second of film or 24p video fill up
the 30 frames in 1 second of NTSC video. Although 3:2 is the conventionally supported
pull-down pattern for NTSC devices, some digital cameras and editing systems are
beginning to support 2:3:3:2 pull-down.
3:2 pull-down A method of distributing film’s 24 fps among NTSC video’s 29.97 fps when
film or 24p video is transferred to NTSC video. In the transfer, the recording alternates
two fields of one frame and then three fields of the next, so that the 24 frames in 1 second
of film or 24p video fill up the 30 frames in 1 second of NTSC video. Also known as 2:3
pull-down.
3-perf 35mm A 35mm film format supported by Cinema Tools. Refers to having three
perforations (sprocket holes) for each film frame. It is gaining popularity, especially with
episodic television, because it contains 25 percent more frames per foot of film than the
more common 4-perf 35mm format.
4-perf 35mm A common 35mm film format that is supported by Cinema Tools. Refers
to having four perforations (sprocket holes) for each film frame.
24 & 1 A method of transferring film to PAL video, where two extra fields per second are
added to the video so the 24 frames in 1 second of film are all contained within the
25 frames in 1 second of PAL video. This method maintains the original action speed.
See also
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