Glossary of time based terminology

field -- For interlaced video sources, a full frame is constructed from alternating odd and even lines from two video fields captured at slightly different times. See also interlaced video.

frames -- The individual video images that make up a moving sequence. Video formats and individual clips are typically described in terms of the resolution of the individual frames, and the frame rate at which they are played. See also frame rate, field.

frame rate -- Playback speed as determined in frames per second (fps). See also sample rate.

progressive video -- Video consisting of complete frames, not interlaced fields. Each individual frame is a coherent image captured by the camera at a single moment in time. See also interlaced video.

freeze frame -- A technique in which a particular frame of video is held onscreen. Sometimes the audio portion of the scene continues playing.

still frame -- A single image or single frame of a video clip. See also freeze frame.

leader -- The beginning of the physical tape on a videocassette or extra material before the beginning of a clip. A tape leader is a strip of nonrecording material that connects the actual recording tape to the spindle on the cassette. Most cassette tapes have about five seconds of leader before the actual recording media portion of the tape begins.

timecode -- An exact time used to identify a specific frame in a clip or production. Measured in hours, minutes, seconds, and frames..

scene -- A single video sequence, typically shot in one continuous take. For editing purposes, it is useful to capture or trim your video material so that each scene is stored as an individual clip that can then be edited on the Timeline. See also clip.

clip -- A short piece of video and/or audio, often containing an individual scene. When creating a video project, you import clip files into bins in your project, and often trim longer clips into individual scenes. You then edit the clips together on the Timeline to play in sequential order to tell the "story" of your production, with transitions between clips and other added effects.

timeline -- In video editing, an interface that allows you to assemble a collection of clips into a production with multiple overlapping tracks. A timeline provides a view of multiple sources being combined over time, with separate tracks for video, audio, and superimposed video, as well as transitions and effects.

import -- To bring media elements into your current working space. Video editors can import video and audio clips, still images, and animated sequences in a variety of formats. You can import both individual clips and folders of clips, and add them to bins in an open Project. capture -- To digitize, or import and convert, video and/or audio into digital format on your computer from external devices, such as a camcorder or VCR.

effect -- The result of processing audio and video clips to enhance, improve, or distort them. See also filter.

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filter -- A transformation applied to a video or audio clip to enhance it or create a visual or auditory effect.

motion blur -- The effect of tracking a speeding object and thus blurring the background because of the motion.

Time Lapse Video Recording

The process by which images are recorded at less than the standard rate of frames per second (NTSC — 29.97; PAL — 25.00) thus extending the period of time that can be covered by the storage medium.