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2024年3月25日发(作者：ncre)
Chroma Key色度键
A video key effect in which one video signal is inserted in place of areas of a
particular color in another video signal. Blue and green are the chroma key
colors most frequently used.
一种视频键的效果，即一个视频信号被插入替换到另一个视频信号中，替换的区域是另
一信号中的特别的颜色区域。使用得最多最频繁的色键颜色是蓝色和绿色。
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Key键
An effect where a portion of a background scene is replaced by a new video.
Key cut and key fill signals are involved, though in some cases the same
signal may be used for both (self key).
一种背景场景的一部分被一个新的图像替代的效果。键切割和键填充信号是相关的，在
某些情况下这两种信号可以是同一个（自键）。
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Key Cut键切割
In key effects, the key cut signal is used to specify where to cut a hole in the
background that will be filled with the key fill video. The key cut signal
determines the shape of the key effect.
在键效果中，键切割信号被用来指定将背景图像中哪里抠出一个空洞并被键填充信号填
充。键切割信号决定键效果的形状。
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Key Fill键填充
In key effects, the video signal which fills the hole cut in the background
video.
在键效果中，在背景图像中填充进切割空洞的视频信号。
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Key Invert键翻转
Reversing the polarity of a key, such that material formerly keyed out will be
keyed in, and vice versa.
反转一个键的性质，这样一来素材中先前是键出的将变为键入，反之亦然。
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Key Mask键遮罩
A key mode which allows use of a wipe pattern generator to prevent some
undesirable portions of the key cut signal from cutting holes in the
background video.
一种键模式，它允许使用划像图案产生器来避免背景图像的切割空洞中某些键切割信号
不合需要的部分。
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Key Priority键优先权
The stacking order of multiple keys. The keyed signal with the highest
priority appears in front of all the others. Keyed signals appear below higher
priority keys and in front of lower priority keys, in a stack. A key priority
transition changes the order of the keys without changing the background
output.
多种键的层次次序。优先权最高的键控信号在所有其它的键之前出现。在优先权栈中，
键控信号在优先权高于它的键之后出现并在优先权低于它的键之前出现。键优先权的改
变只改变键的次序而不改变背景图像的输出。
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Linear Key线性键（不懂这是什么东东！！！）
A key in which the keyer signal is faithfully reproduced in the final key effect.
Linear keying preserves soft key edges, and generally has a gain of 1, or
unity.
在最终的键效果中键控器信号被如实地复制的一种键。线性键控保持键的柔边，并且通
常增益值取1或一致。
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Clip(译作什么？)
A threshold level adjustment to which the keying attribute (luminance,
chrominance) is compared for generating the internal key control signal.
Clip, in conjunction with gain, sets the switching point between the
background and the key fill. Also see Gain.
对键控属性（亮度、色度）对比的初步调节以产生内键控制信号。Clip与增益一同设置
背景信号与键填充信号间的开关点。
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Luminance Key亮度键(感觉还是不太理解！！！）
A key effect in which the portions of the key cut signal that are greater in
luminance than the clip level cuts the hole in the background scene.
Generally used when the key cut and key fill signals originate from the same
source. Luminance key clip and gain is adjustable.
键切割信号一部分的亮度高于以clip的标准在背景场景中切割空洞的亮度的一种键效
果。通常用于当键切割及键填充信号产生于同一来源的时候。亮度键的clip和增益是可
调的。
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