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Dictionary of Technical Terms - K
key frame current effect space
The memory space used to store a key frame effect as you create or edit it. An overall effect consisting of a series of effects snapshots called key frames. When the overall effect is replayed, the machine (switcher, DPM, etc.) automatically and gradually dissolves from one key frame to the next. A process called inbetweening defines what happens between key frames. The result is a moving animation effect. See key. A luminance key mode that inverts the polarity of the key source to allow dark areas of the source video to cut holes in the background instead of bright areas. A chroma key mode that inverts the foreground and background positions. A video switcher feature that allows a key source to be selected at the switcher and then sent to a digital picture manipulator for manipulation. The manipulated key and fill video are then returned to the switcher's keyer for keying ("flying" a key) over background video. See mask. A Grass Valley Group effects memory storage system that saves E-MEM effects onto a removable EEPROM shaped like a key. The memorized key clip, gain, and key type selections for each key source. A keyer feature that alternately fades a key in over background video or fades it out. Control functions on a keyer that permit alteration of the key in some way, such as shadow, invert, mask, and edge effects. A function that determines which key appears on top in video switching/keying systems having multiple keyers all on-air at the same time. See key breakaway. The signal that is said to "cut a hole" in the background scene for a key effect. This signal controls a video mixer that switches between the background scene and the fill video; thus, the key source determines the shape of the key effect. A video switcher key mode in which one key bus button selects the hole cutter and a different key bus button selects the fill video. Also called split key or key breakaway. The key fill, key source, or both. A specification rating method that gives a higher factor to video disturbances that cause the most observable picture degradation. One thousand hertz. A unit of measurement of data transmission speed equalling one thousand baud. See baud. One thousand twenty-four (1024) bytes (210). Unit of measure of weight. One kilogram equals 2.20 pounds. One thousand ohms. GVG name for a switcher Mask Bus, which allows signals from the wipe, key, and mask rectangle generators to cumulatively modulate (modify) wipes, keys, or mattes. Allows users to build custom key masks from a variety of sources.KRYSTAL™ Digital Effects System
A digital picture manipulator made by GVG. An option to the GVG Kaleidoscope™ Digital Picture Manipulator that provides such effects as page turns, page rolls, ripples, slits, and spheres. Kilovolt. Kilovoltampere.We've recently redesigned our website so your bookmarked links may no longer work. Please use either the search bar at the top right of this page or select an area from one of the tabs above to find what you are looking for.
