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GLOSSARY ■
2:3 pulldown The process in telecine created
when a film, shot at 24 fps, is transferred to
video at 30 fps. Every other frame of film is
held for an extra field of video, thus the
fields run in a 2:3 order. Used in NTSC
telecine only.
2-pop A 1000 Hz tone emitted for one frame
47 frames before a reel begins. Used to estab-
lish sync with a SMPTE leader “2” frame.
Also called a sync pop.
U-matic
3
⁄
4
″ analog videocassette recorder and
tapes.
uncompressed video A recorded or digitized
video stream that is not processed by a data-
compression scheme.
up cut In editing, to cut off the end of the
previous scene, often by mistake.
upright A vertical viewing system for film.
Also used for cutting. Moviolas are the most
common uprights used. Vaguely resembles a
sewing machine with two pedals attached:
one for sound, and the other for the picture.
user bits The portion of the timecode data
available for encoding data chosen by the
user; for example, footage count and key
code numbers. Frequently used in music
videos for take and scene numbers.
U-type
A recorder format that uses
3
⁄4″
U-matic
videotape.
variable-speed play A process of shifting easily
between the playing, stepping (jogging), and
shuttling of footage. When images remain
stable, sometimes referred to as dynamic
tracking.
VBV Acronym for Video-Black-Video. A pre-
view mode in linear editing systems that dis-
plays a previously recorded scene, a black
segment where footage is to be inserted, and
then an adjacent recorded scene on the other
side of the edit. Frequently used to check for
flash frames on either side of a previewed edit.
VCR Acronym for videocassette recorder.
vector Term that refers to a specific color and
hue on a vectorscope.
vectorscope A visual display that shows the
electronic pattern of the color portion of the
video signal. It is used to adjust the color sat-
uration and hue by using a reference such as
color bars.
vertical blanking interval The period during
which the television picture goes blank as
the electron beam returns (retraces) from
scanning the bottom of one field of video to
begin scanning the topline of the next. The
vertical blanking interval is sometimes used
for inserting timecode, for automatic color
tuning, and for closed captioning.
vertical sync Sync pulses that control the verti-
cal field-by-field scanning of the video pic-
ture by the electron beam.
VHS Acronym for video home system. The
1
⁄
2
″ consumer videocassette format developed
by JVC.
video slave driver A hardware component that
synchronizes audio frame rates and pulldown
of video frames.
videotape Oxide-coated, Mylar-based mag-
netic tape used for recording and playback of
video and audio signals.
viewing conditions A description of the charac-
teristics of an area where images are viewed.
VITC Acronym for vertical interval timecode.
Refers to timecode that is inserted in the ver-
tical
blanking interval. Not all video use VITC.
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