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1.3.
DEFINITIONS
2K:
A Film image scanned into a computer file at a resolution of 2048 horizontal pixels.
2K:
(DaVinci 2K) A colour corrector manufactured by DaVinci Systems. This colour corrector
usually is accompanied with a TLC Edit Controller.
2:3 PULLDOWN: Film is typically viewed at 24 frames per second (Fps) while NTSC video is viewed at 30
Fps. To compensate for this difference in the frame rates, telecines use a 2:3 pulldown. Since
each video frame is comprised of two video fields, video is viewed at 60 fields per second.
Telecines can transfer 24 film frames to 60 video fields (30 video frames). The resulting ratio is
24:60 or 2:5, which means 2 film frames every 5 video fields. The 2:3 implies that one of the
film frames is transferred to 2 video fields, the following film frame is transferred to 3 video
fields, and so on.
24p:
A progressively scanned high definition video format with 1920 pixels and 1080 lines. (See also
description sF.)
3 Line VITC: A SMPTE recommended practice (RP201) for encoding Video and audio time code and
KeyKode information into the vertical interval of a standard definition video signal. This method
of encoding the information is intended for use in post production as a means of conveying the
essential address elements that define the film to tape transfer. The encoded data is contained
in a block of three consecutive lines of the vertical interval. The first line contains the video
time code, the second line contains the KeyKode information, and the third line contains the
audio timecode.
4K:
A Film image scanned into a computer file at a resolution of 4096 horizontal pixels. 4K is
considered to be a full-resolution scan of 35mm film.
4 Fsc
Composite Digital video as used in D2 and D3 VTRs. Stands for 4 times the Frequency of
Subcarrier, which is the sampling rate used.
4:2:2
The sampling ratio used in the D1 (CCIR 601) digital video signal. For every 4 samples of
luminance there are 2 samples each of R-Y (Red minus Luminance) and B-Y (Blue minus
luminance).
4:4:4
A sampling ratio that has equal amounts of the luminance and both chrominance channels.
16x9
A wide screen television format in which the aspect ratio of the screen is 16 units wide by 9
high as opposed to the 4x3 of normal TV.
Aaton Code An in-camera film timecode system (also known as Matrix Time Code), exposed in the
camera during filming, carries data that is both machine-readable (a matrix of dots for each film
frame) and man-readable for its conversion into SMPTE time code. Aaton Code specifically
contains the production timecode synchronizing data, hour, minute, second, frame, year,
month, day, production ID, camera ID and camera speed. Aaton Code, the original format and
Aaton Code II, the current format are both readable by Evertz UV series reader heads and
model 5550 Universal decoder.
A-Frame Edit: A video edit which starts on the first frame of the 5 video frame (4 film frame) sequence
created when 24 frame film is transferred to 30 frame video (see 3:2 pulldown). The A-frame is
the only frame in the sequence where a film frame is completely reproduced on one complete
OVERVIEW
9025TR Series Film Footage Encoders Manual
Revision 1.3
Page 1-4
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