Pyro Industries API-1394PCI Manual de usuario descargar pdf (Pagina 314)

293

■ GLOSSARY

A bin normally consists of a series of hooks

that overhang into a nonfibrous bag. The

clips are attached to cardboard trim tags that

visually identify the scene, take, edge numbers,

and a short description. The tags and clips

are hung on pins and cascade into the bag.

nonlinear editors (NLEs) have virtual or elec-

tronic bins, where pointers to media files

(clips, sequences, and subclips) are located.

NLE bins are used in much the same way as

film bins, with the added feature of the ability

to copy clips into several different type bins.

bit A contraction of a binary digit, normally

having a value of 0 or 1. The smallest unit of

information that a computer can store.

black and code The process of recording black

video, timecode, and control track onto

videotape stock. This process is also referred

to as striping or blacking.

black burst A black video signal with no other

luminance or chrominance. Black burst can

be used as a reference signal for synchroniz-

ing video and audio components.

black burst generator An electronic device that

emits a black burst signal, usually with mul-

tiple outputs so that devices can be referenced

or synchronized electronically together.

blacked tapes See black and code.

blue screen A special effects procedure in which

a subject is photographed in front of a uni-

formly illuminated blue background. A new

background image can be substituted for the

blue during the shoot or in postproduction.

Also referred to as chroma key.

B-mode A method of assembling an edit deci-

sion list (EDL). In a B-mode EDL assembly,

the editing system performs all the edits from

tapes that are currently assigned to the decks

and then finds the next tape sequentially in

the list for full assembly of all of its edits

in the list, leaving gaps for material to be

filled by subsequent tapes. Also referred to as

“checkerboard” assembly.

bps Acronym for bits per second.

brightness A visual stimulus that gives the

observer a perception of more or less light.

bumping up The transfer of a program

recorded on a lower-quality videotape to a

higher-quality videotape; for example, a

recording from DV to Digital Beta.

burn-in Refers to character-generated num-

bers superimposed on video and telecine

transfers. Typical burn-ins include video

timecode, audio timecode, and key numbers.

BVB Acronym for Black-Video-Black. A pre-

view mode in linear editing systems that dis-

plays black, newly inserted video, and then

black again. Used for checking for flash frames

when longitudinal timecode (LTC) is used.

B–Y One of the color difference signals in the

component color system of the National

Television Standards Committee (NTSC)

video standard. The signal formula is:

B–Y = 0.299R (red) – 0.587G (green) +

0.886B (blue)

calibrate To adjust levels or instruments for

maximum precision.

calibration The process of correcting any devi-

ation from a standard set of specifications.

camera roll A roll of motion picture film used

in production, usually 400 feet or 800 feet in

length. Each roll is assigned a unique number

for reference. Also called cam roll.

camera report A report issued for each camera

roll by the camera department of a motion

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