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Navigation

navigation -- The flow of playback through different elements of a DVD production - including menus, tracks, and chapters within video clips. Navigation can be explicitly controlled by the viewer by menu selections, can be defined when the production is authored (such as returning to a menu after playback reaches the end of a clip), or can be controlled dynamically by navigational commands. See also link, path.

Navigation Command

navigation command -- Programming instruction that can be authored into the DVD production and executed dynamically by the DVD player. These can be used to examine the current playback state; calculate, store, and retrieve values; and then alter the playback by selecting different streams and tracks based on user input, or even randomly. See also script.

Negative

( 1) For a black-and-white image those tonal values which are the opposite of those in the original subject. (2) For a color image, those color values which are the complement of those in the original subject. (Film Editing)

Negative:

The image on film that makes the white areas of originals black and black areas white.

Nets

A bobbinet on a frame used to cut lighting intensity by either a half stop or full stop. (Grip/Lighting)

Network

A combination of electrical elements, such as a group of interconnected computers.

Neutral Density (ND)

Colorless filters that reduce the amount of light in controlled degrees. (Camera/Lighting)

Noir

Usually refers to the classic black and white film noir style used in detective mysteries, typically employing hard lighting and dark, low key lighting. (Camera/Lighting)

Noise

In audio systems, noise is the electrical interference or other unwanted sound introduced into the system (i.e. hiss, hum, rumble, crosstalk, etc). (Sound)

Noise

Unwanted disturbance within an electronic system. Interference present in a video picture.

Non-reproducing blue:

A blue color the camera cannot see. Used in marking up artwork.

Non-seamless Playback

non-seamless playback -- A noticeable break or interruption during playback. DVD playback can have visible brief pauses in playback when moving between different tracks. For example, this can occur when the laser needs to move to a different portion of the disc or refocus on the second layer of the disc, or when the player needs to execute a navigation command. See also seamless playback.

Nonvolatile

A memory system whose stored data is undisturbed by removal of operating power.

Notch

A recess on the edge of a piece of film which automatically triggers a mechanism effecting some modification of the duplication process, commonly a change of exposure light intensity. (Film Editing)

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.

NTSC (National Television Systems Committee)

Organization that formulated standards for the NTSC television system. Now describes the American system of color telecasting which is used mainly in North America, Japan, and parts of South America. NTSC television uses a 3.579545 MHz subcarrier whose phase varies with the instantaneous hue of the televised color and whose amplitude varies with the instantaneous saturation of the color. NTSC employs 525 lines per frame and 59.94 fields per second.

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