Heres a list of terms used in the
Atomic Learning Video Storytelling Guide. You might also
want to consult the very complete and detailed glossary from the publishers
of Computer
Videomaker Magazine. Also, get the
magazine. Its a great resource for beginning to advanced
videomakers, like you!
180° rule see action line
Action line
or Action axis
An imaginary line drawn between two subjects, or along a line
of motion to maintain continuity of screen direction. Crossing
it from one shot to the next will create an error in continuity.
It is often referred to as the "180-degree rule."
AGC (Automatic Gain Control) Circuitry used to ensure that video and audio
output signals are maintained at constant levels in the face of
widely varying input signal levels. AGC is typically used to maintain
a constant video luminance level by boosting weak (low light)
picture signals electronically. Some equipment includes manual
gain control.
Analog
The term analogue simply means like or similar. Traditional recording
media have been analog, such as tape cassettes and the now-ancient
vinyl records. Analog video that is copied or edited several generations
suffers from generation loss and is subject to degradation due
to noise and distortion. Your television and VCR can be analog
video devices. To be stored and manipulated on a computer, analog
video must be converted to digital video.
Aperture
This refers to the variable opening inside a lens that regulates
the amount of light available to the camera. Also known as an
iris.
Artifact
Distortion to a picture or a sound signal. With digital video,
artifacts can result from overloading the input device with too
much signal, or from excessive or improper compression.
Aspect Ratio
The proportional height and width of the picture on the screen.
The current standard for conventional receiver or monitor is three
by four (3:4); 16:9 for HDTV.
Auto exposure
Circuitry that monitors light levels and adjusts camcorder iris
accordingly, compensating for changing light condition. (see also
AGC)
B-roll This
refers to certain video you collect. B-roll is any video that
isn't the main action; that illustrates or shows examples. You
might think of it as Background-roll. For example, if you are
interviewing someone about BMX racing you might show footage of
an actual race while the person continues to talk. That would
be the B-roll footage.
Bleeding
Video image imperfection characterized by blurring of color borders;
colors spill over defined boundaries, "run" into neighboring
areas. This is more of a problem with red color hues, and is especially
evident in copies made from VHS tapes.
Capturing
Refers to capturing source video for use on a computer. If analog,
the captured video is converted to digital.
CCD
(Charge Coupled Device) Light-sensitive computer chip in video
cameras that converts images into electrical flows. Less prone
to image irregularities -- burn-in, lag, streaking -- than older
image sensors.
Chrominance
The color portion of a video signal.
Component Video Signal transmission system, resembling S-video
concept, employed with professional videotape formats. Separates
luminance and two chrominance channels to avoid quality loss from
NTSC or PAL encoding.
Composite Video A video signal in which the luminance and chrominance
elements have been combined into formats, such as VHS.
Contrast
The degree to which your video contains very dark and very light
luminance value. A high-contrast picture has more black and white
values with fewer values in between. A low contrast picture has
more middle tones without very dark or very light areas.
Crawl
Text or graphics -- usually special announcements -- that move
across the screen horizontally, typically from bottom right to
left. Produced with a character generator or computer editing
software.
Cross cutting Alternating views of one action with views of
another. Within a scene, you might cut from one part of the action
to another. For example, to present an interrogation you might
cut frequently between views of the questioner and those of the
prisoner. You might also cross-cut between actions taking place
in two different locations. The classic example is the damsel
tied to the railroad tracks. Shots of the victim alternate with
shots of the approaching train and shots or our hero, galloping
to the rescue. Disclaimer: dont
try this at home!
Cut
The instantaneous, direct switch from one picture to another.
Cutaway
A single shot inserted into a sequence of shots that momentarily
interrupts the flow of action, usually introducing a pertinent
detail. It is frequently used as transitional footage or to avoid
a jump cut.
Depth of field
The amount of space within the view of the lens which will maintain
an acceptable focus.
Diffused light Diffused light is experienced on overcast days,
when the sun is hidden behind clouds. This type of light gives
the illusion that it originates from many directions. Artificial
light sources need to employ light diffusers that spread out the
light. Images have a soft and gentle appearance, and are void
of harsh shadows.
Digital
A reference to a system whereby a continuously variable analog
signal is reduced and encoded into discrete binary bits.
Digital camcorders Camcorders that record and playback digital
video and audio signals.
Digitize
To convert analog video, audio, or both to digital form. The process
of converting a continuous analog video or audio signal to digital
data (ones and zeros) for computer storage. The signal can then
be copied repeatedly with no degradation.
Digitizing
A method of recording in which samples of the original analog
signal are encoded on tape or disk as binary information for storage
or processing.
Distortion
A modification of the original signal appearing in the output
of audio equipment, degrading the sound quality.
DV
Abbreviation for digital video. DV can also denote the type of
compression used by DV systems or a format that incorporates DV
compression. The DV designation is also used to for a special
type of tape cartridge used in DV camcorders and DV tape decks.
Edited master Video industry term for the tape containing
the finished (edited) program.
Establishing Shot
Usually a long-shot (LS) at the beginning of a scene which is
intended to inform the audience about a changed locale for the
scene which follows.
Exposure
The amount of light available in a shot at particular lens settings.
Proper exposure yields a picture with good brightness and contrast.
Fade
An optical effect in which the image of a scene is gradually replaced
by a uniform dark area, or vice versa.
FireWire
The Apple Computer trade name for the IEEE 1394 digital video
standard.
Foley
Personal sound effects, like footsteps, breathing or punches used
to heighten realism that are added in post production. Also the
name of a small town in central Minnesota :-)
Focal length Movie
Technically, its the distance from a camera's lens to a
focused image with the lens focused on infinity. Practically speaking,
it is a measurement of the field of view a lens can display. Short
focal lengths offer a broad field of view (wide-angle); long focal
lengths offer a narrow field of view (telephoto). Zoom lenses
have a variable focal length.
Frame
One complete screen on videotape, lasting 1/30th of a second.
There are 30 frames in a second.
Framing
Act of composing a shot in the camcorder's viewfinder for desired
content, angle, and field of view -- overall composition.
Gaffer
The chief lighting technician for a production who is in charge
of the electrical department
Gain Video
amplification of signal strength. "Riding gain" means
varying controls to achieve desired contrast levels.
Generation
Relationship between a master video recording and a given copy
of that master. A "second-generation" tape is a copy
of the original. "Third-generation" is a copy of a second-generation
tape.
Generation
Loss
Created when editing or copying one analog videotape to another
videotape. Each time you copy a tape, some quality is lost. This
is most apparent in less expensive video formats, like VHS. Theoretically
absent from digital video editing.
Gigabyte (GB) A unit for measuring computer memory capacity,
equivalent to 1,000 megabytes (MB)
Grip
A production crew stagehand responsible for handling equipment,
props, and scenery before, during, and after production.
HDTV
High Definition TV refers to TV sets that display the highest
resolution picture formats, which is vertical lines 1,080 and
horizontal pixels 1,920, or 720 vertical lines and 1,280 of horizontal
pixels. The aspect ratio for HDTV is 16:9 (wide screen)
ieee1394
The interface standard that enables the direct transfer of DV
between devices, such as a DV camcorder and a computer. IEEE 1394
also describes the cables and connectors utilizing this standard.
ILINK
SONYs copyrighted name for IEEE 1394
Intercutting
An editing method whereby related shots are inserted into a series
of other shots for the purpose of contrast or for some other effect.
Iris
Camcorder's diaphragm lens opening or aperture, it regulates the
amount of light entering the camera.
Jump cut Movie (:40
648K)
A jarring edit caused by the choice of shots rather than any technical
imperfection. Unnatural, abrupt switch between shots identical
in subject but slightly different in screen location. Awkward
progression makes subject appear to jump from one screen location
to another. They are usually accidental, but they can also be
used for purposeful effect.
Key Grip
On professional film and video sets this is the chief grip who
works directly with the gaffer in creating shadow effects for
set lighting and who supervises camera cranes, dollies and other
platforms or supporting structures according to the requirements
of the director of photography. [see Grip]
LANC
The protocol defined by Sony for enabling external control of
video devices and accessing status information from the device.
Also referred to as Control-L.
Lavaliere
A small, easily concealed, microphone, typically attached to clothing
or worn around the neck for interview settings.
LCD screen
Abbreviation for Liquid Crystal Display, the kind of display used
on many camcorders.
Linear editing Analog, tape-based editing. Called linear because
scenes are laid in line on the tape. It has many disadvantages,
when compared to non-linear editing, such as the need to rewind
and fast forward tapes. It also requires special editing VCRs
and multiple source decks for transitions, other than cuts, between
tape segments.
Luminance
The black-and-white portion of a video signal that carries brightness
information representing picture contrast, light and dark qualities;
frequently abbreviated as "Y." [See also chrominance.]
Macro
Lens capable of extreme closeup focusing, useful for intimate
views of small subjects.
Master shot
The shot that contains all of the action in a sequence when shooting
for editing with a single camera.
Match Cut (match-action cut)
A cut made during action or movement between two shots in which
the action has been overlapped, either by repetition of the action
or by the use of more than one camera.
Medium-closeup A way of expressing a difference between degrees
of closeness, or portion of the subject that is visible in the
shot. A medium-closeup would be framed somewhat less closely than
a closeup in the same sequence. All shot descriptions are relative
terms.
Montage
The assembly of shots and the portrayal of action or ideas through
the use of many short shots.
Noise
Undesirable video or audio signal interference; typically seen
as snow, heard as hiss.
Non-linear editing Random-access editing of video and audio on
a computer, enabling edits to be processed and reprocessed at
any point in the timeline, at any time. Traditional videotape
editors are linear because they require editing video sequentially,
from beginning to end. Also eliminates the need for rewinding
and allows for multiple dubs without generational loss.
NTSC
National Television Standards Committee. The organization that
sets the American broadcast and videotape format standards for
the FCC. Color television is currently set at 525 lines per frame,
29.97 frames per second.
Overscan
The portion of a television picture that extends beyond the normal
screen size.
PAL (Phase Alternating Line) The European color television standard that
specifies a 25Hz frame rate and 625 lines per frame. Technically
a higher quality signal that the American standard, NTSC. The
two are not compatible, meaning a PAL tape cannot be played on
an NTSC VCR or displayed on a NTSC monitor, and vice versa.
Phantom Power Microphones that normally require a battery
can be used without a battery if supplied from a phantom power
device, like certain microphone mixers, that supply power through
the audio cable.
Point of view (POV) Movie Shot perspective whereby the camera assumes
the subject's view, and thus viewers see what the subject sees
as if through his/her/its eyes.
Post-production The stage of a film or video project during
which previously shot footage is edited and assembled. Effects,
graphics, titles, and sound are added in post-production.
Pre-production The planning phase of a film or video project,
usually completed prior to shooting (production).
Production
The phase of a film or video project that involves shooting or
recording raw footage.
Psychological closure
The process in which your mind makes sense of incomplete visual
information by mentally projecting the image beyond the borders
of the frame. See the text section and movie on natural cutoff
lines.
QuickTime
Short version: a standard for compressing and playing digital
video and audio. Long version: Apple Computer's multi-platform,
industry-standard, multimedia software architecture. QuickTime
is used by software developers, hardware manufacturers, and content
creators to author and publish synchronized graphics, sound, video,
text, music, virtual reality, and 3-D media.
Raw footage
Original, unedited film or video footage that has not been modified
Reaction shot
Cutaway view showing someone's or something's response to primary
action/subject.
RF
Abbreviation for radio frequency. Combination of audio and video
signals coded as a channel number, necessary for television broadcasts
as well as some closed-circuit distribution. Typically VCRs will
include an RF converter that transforms the video and audio signals
it receives into channel 3 or 4.
Resolution
Amount of picture detail reproduced by a video system, influenced
by a camera's pickup, lens, internal optics, recording medium,
and playback monitor. The more detail, the sharper and better
defined the picture.
Reverse angle A shot that is turned approximately 180 degrees
in relation to the preceding shot.
Rough cut
A preliminary trial stage in the process of editing a video or
film. Shots are laid out in approximate relationship to an end
product, without detailed attention to the individual cutting
points.
Safe title area
The area that comprises 80 percent of the TV screen, measured
from the center of the screen outward in all directions. The safe
title area is the area within which title creditsno matter
how poorly adjusted a monitor or receiver may beare legible.
Scene
A sequence or multiple sequences of related shots, usually constituting
action in one particular location.
Screen time The
amount of time an event in a film or video takes after the raw
footage is edited to remove unnecessary action. It can be vastly
different from the time we know the same event actually would
take in real life.
Scrubbing
The backward or forward movement through audio or video material
via a mouse, keyboard, or other device.
Sequence
A term used in gathering video and editing. It refers to a series
of related shots. For example, a sequence could be a wide shot
of a classroom, followed by a medium shot of a few students, followed
by a single student asking a question.
Shot
All pictorial material recorded by a camera. More strictly speaking,
shots are intentional, isolated camera views that collectively
comprise a sequence or scene.
Shutter speed The camera shutter controls the amount of time
that incoming light takes to form a single video field (a video
image or "frame" consists of two fields.) NTSC video
is recorded at 60 fields per second and normal camcorder shutter
speed is 1/60 of a second. Faster shutter speeds, 1/250 sec. to
1/10,000 sec., are usually used to record action that would normally
be blurred, such as a golf swing. The swing will be sharper when
played back, but very high shutter speeds will also result in
jerky motion. High shutter speeds require lots of light for proper
exposure. Slower shutter speeds, 1/30 sec. or 1/15 sec., will
yield an image with a softer focus. Motion will be blurred at
slow speeds, which may be a way to achieve a special effect. Slower
shutter speeds require less light.
Split edit
Sometimes called an L-cut, a split edit is a transition from one
shot to another, where the picture transition does not coincide
with the audio transition. This is often done to enhance the aesthetics
or flow of the video. For example, a conversation between two
people can feel like a tennis match if you always cut the audio
and video at the same time. A split edit allows the audience to
see the reaction of the person doing the listening, or the aftermath
of speaking, rather than simply the act of speaking.
Still frame
A single frame of video repeated so it appears to have no motion.
Stratocaster
A legendary electric guitar design from Fender.
Streaming
The process of sending video over the Web or other networks to
allow playback on the desktop as the video is received, rather
than requiring the entire file to be downloaded prior to playback.
Sweetening
Audio post-production where audio is corrected and enhanced. Music,
narration and sound effects are mixed with original sound elements
to sweeten the sound track.
Take
An individual shot. When time and budgets permit, many takes may
be filmed of the same shot.
Talent
A generic term for the people or creatures assuming primary on-screen
roles when videotaping.
Telephoto
Camera lens with a long focal length, narrow horizontal field
of view. Opposite of wide-angle, it captures magnified, closeup
images from a considerable distance.
Time Line Editing A computer-based method of editing in which
video and audio clips are represented on a computer screen by
bars proportional to the length of the clip. These bars can be
moved and resized along a grid whose horizontal axis relates to
the time of the program. IMovie features both a Clips
view and Timeline view.
Transition
The change from one video clip to another.
Trimming
Editing a clip on a frame-by-frame basis, or editing clips in
relationship to one another.
Umbrella
What the name implies, a lighting accessory available in various
sizes usually, made of textured gold or silver fabric. Facilitates
soft, shadowless illumination by reflecting light onto a scene.
USB
Universal Serial Bus. Describes a particular type of computer
interface port and its associated cables.
Whip Pan
Another name for swish pan. Extremely rapid camera movement from
left to right or right to left, appearing as image blur. Two such
pans in the same direction -- one moving from, the other moving
to a stationary shot -- edited together can effectively convey
passage of time.
Vectors
A dominant direction established by screen movement in a specific
direction, by a person looking in a specific direction, or by
some other screen element that directs viewer attention in a specific
direction.
Viewfinder
Small television monitor built in to a camcorder for viewing during
shooting and playback.
Voice over
Narration added over video. The narrator, who is not recorded
with the original video, explains or somehow supplements the visual
images.
Wireless lavaliere mic A wireless version of a lapel or lavaliere mic.
It operates on a radio frequency, either in the VHF or UHF band
range. This should be one of the first accessories you purchase,
in my opinion. [see lavaliere mic ]
White Balance A color camera function which determines how
much red, green and blue is required to produce a normal-looking
white. Shots made with improper white balance will have an abnormal
color tint.
Wide-angle
A camera lens with a short focal length and broad horizontal field
of view. Opposite of telephoto, it tends to reinforce perception
of depth and produces shots with great depth of field.
Wipe
Picture transition from one scene to another wherein the new scene
is revealed by a moving line or pattern. In simplest form, a wipe
simulates a window shade being drawn. More sophisticated variations
include colorized wipes, quivering wipes, triangle wipes, and
venetian blind wipes.
XLR
One of several varieties of sound connectors having three or more
conductors plus an outer shell that shields the connectors and
locks them into place. Also called a Canon connector.
Zoom ratio
Range of a lens' focal length, from most "zoomed in"
field of view to most "zoomed out." Expressed as ratio:
6:1, for example, implies the same lens from the same distance
can make the same image appear six-times closer.
Source: AtomicLearning - http://www.atomiclearning.com/glossary.htm