Glossary: D
D1, D5
Two digital videotape recording formats that conform to the ITU-R 601 (CCIR-601) standard for uncompressed 4:2:2 digital component video. D5 is very similar to D1 in that it is a component digital recorder. However, D1 records with 8-bit accuracy; D5 records with 10-bit accuracy.
See also D2, D3.
D2, D3
Two digital videotape recording formats for composite video. The main difference between D2 and D3 is that D2 uses 3/4-inch digital videotape, and D3 uses 1/2-inch digital videotape.
See also D1, D5.
DAE,
Digidesign Audio Engine
Trademarks of Avid Technology, Inc. The application that manages the AudioSuite plug-ins.
dailies
Film prints or video transfers of recently shot film material, prepared quickly so that production personnel can view and evaluate the previous day's shooting before proceeding. Also called rushes, primarily in the United Kingdom.
DAT
Digital audiotape. A digital audio recording format that uses 3.8mm-wide magnetic tape in a plastic cassette.
decibel (dB)
A unit of measurement for audio volume level.
deck controller
A tool that allows the user to control a deck using standard functions such as shuttle, play, fast forward, rewind, stop, and eject.
decompose
To create new, shorter master clips based on only the material you have edited and included in your sequence.
degauss
To demagnetize (erase) all recorded material on a magnetic videotape, an audiotape, or the screen of a color monitor.
delay edit
See overlap edit.
depth shadow
A shadow that extends solidly from the edges of a title or shape to make it appear three-dimensional.
See also drop shadow.
digital cut
The output of a sequence, which is usually recorded to tape.
digital recording
A method of recording in which the recorded signal is encoded on the tape in pulses and then is decoded during playback.
digitally record
To convert analog video and audio signals to digital signals.
digitize
To convert analog video and audio signals to an Avid compressed digital signal format.
dip
An adjustment to an audio track in which the volume gain level decreases or "dips" to a lower level, rather than fading completely.
direct digital interface
The interconnection of compatible pieces of digital audio or video equipment without conversion of the signal to an analog form.
direction handle
A line extending from a control point that controls the direction of a BΘzier curve. Each control point has two direction handles. These two handles together affect how the curve passes through the control point, with one handle controlling how the curve appears before the control point, and the other handle controlling how the curve appears after the control point.
disk
The medium used to store data in computer-readable form.
dissolve
A video or an audio transition in which an image from one source gradually becomes less distinct as an image from a second source replaces it. An audio dissolve is also called a segue.
See also crossfade, fade.
dithering
The process of adjusting adjacent pixels of different colors to give the illusion of a third color, which simulates the display of colors that are not in the current Color palette.
D-mode
An A-mode edit decision list (EDL) in which all effects (dissolves, wipes, graphic overlays) are performed at the end.
See also A-mode, B-mode, C-mode, E-mode, source mode.
dongle
A hardware device used as a key to control the use of licensed software. The software can be installed on any system but will run only on the system that has a dongle installed. The dongle connects to the Apple Desktop Bus on Macintosh systems or to the parallel (printer) port on PC systems.
double-perf film
Film stock with perforations along both edges of the film.
double-strand editing
See A/B-roll.
double system
Any film system in which picture and sound are recorded on separate media. A double system requires the resyncing of picture and sound during postproduction.
drop-frame timecode
A type of SMPTE timecode designed to match clock time exactly. Two frames of code are dropped every minute on the minute except the tenth minute, to correct for the fact that color frames occur at a rate of 29.97áfps, rather than an exact 30áfps. Drop-frame timecode is recorded with semicolons between the digits; for example, 1;00;10;02.
Compare with non-drop-frame timecode.
drop shadow
A shadow that is offset from a title or shape to give the feeling of spatial dimension.
See also depth shadow.
DTV
Digital television. The technology enabling the terrestrial transmission of television programs as data.
See also HDTV.
dubbing
1.  In videotape production, the process of copying video or audio from one tape to another.
2.  In film production, the process of replacing dialog on a sound track.
See also ADR, foley.
dubmaster
A second-generation copy of a program master used for making additional preview or distribution copies, thereby protecting the master from overuse.
dupe
Duplicate. A section of film or video source footage that has been repeated (duplicated) one or more times in an edited program.
dupe list
A sublist of duplicated clips of film requiring additional prints or copies of negative for film finishing.
See also cut list.
dupe reel
A reel designated for the recording and playback of dupes (duplicate shots) during videotape editing.
duration
The length of time (in hours, minutes, and seconds or in feet and frames) that a particular effect or section of audio or video material lasts.
DV
Digital video that is transferred through equipment conforming to IEEE Standard 1394. This equipment is sometimes called FireWire or i.LINK.
DVE
Digital video effect.
dynamic range
An audio term that refers to the range between the softest and loudest levels a source can produce without distortion.

Some features described in Help are available only in Avid Xpress Pro or Avid Xpress DV. For more information about Avid Free DV go to
www.avid.com.