N

new segment protocol

A protocol that defines a way to present start and stop times and data rate information to the filter in advance of the data, so that a filter can adjust its processing accordingly.

nonlinear editing

A method of editing program material where the final output product is not generated until all editorial decisions are made. All edit decisions are maintained in an edit list that drives a real-time preview. No recording is made until the edit decisions are finalized. This necessitates a real-time, multievent playback mechanism using digital video and audio stored on disk drives. These systems are used primarily for offline editing, although higher-end systems with broadcast-quality video are now available.

NTSC

National TV Systems Committee analog composite color television standard. Uses a rate of 29.97 frames per second and 59.94 fields per second. North America, Japan, and many other countries use NTSC. See also PAL and SECAM.

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