This effect influences the threshold between transparent (see-through) and opaque pixels. You can either enlarge or reduce the transparent area when it has a soft border with partly transparent pixels.

Allows keying out black parts of the image based on the luminance values, all other parts will be masked black. This result can be inverted: transparent areas get black.
In order to key out only black with the possibility not to get any transparency for other dark parts, use RGB key instead.

Allows keying out black parts of the image based on the luminance values. This result can be inverted: transparent areas get black.
In order to key out only black with the possibility not to get any transparency for other light parts, use RGB key instead.

This effect looks for pixels that match in the textures from the layer media and effect media. Corresponding areas are keyed out, meaning that the background layer is visible. When there are differences in areas, they are not keyed out but overlap the background as a black mask. You can adjust a threshold to accept small color differences. The third image shows the result of the "Invert" parameter: differences are keyed out and matching areas overlay the background in their original color (and white if transparent).

This effect looks for pixels that match in the textures from the layer media and effect media. Corresponding areas are keyed out, meaning that the background layer is visible. When there are differences in areas, they are not keyed out but overlap the background in the color from the layer media. You can adjust a threshold to accept small color differences. The third image shows the result of the "Invert" parameter: differences are keyed out and matching areas overlay the background in there original color (and white if transparent).

This effect creates a mask from a captured frame and keys out all matching pixels from following frames in the video applied to the layer. As seen in the second image, all black pixels from the layer texture are keyed out in general. To capture a frame toggle the "Capture" parameter above 0 and back to 0. Now this frame is memorized and compared to following frames. All matching pixels are keyed out, different pixels overlap the background. The third image shows a train, which was not visible in the captured frame, hence it can be seen on top the background layer.

Technical Information
This effect can only be used with images or videos (i.e. textures) that are smaller than the "Max. Internal Texture Size" which depends on your PB license and is adjustable in the Configuration tab under "Render Engine".

Allows adjusting a key based on luminance (brightness) values. A high range starts keying out, only dark colors (see second image) whilst a smaller level enlarges the value range of affected pixel brightness (see third image).

Allows keying out any RGB color included in the picked Color Range. In the second image a bright yellow color (RGB 255,255,0) and a small range was chosen which means that most dark colors, dark red, dark green and  yellow tones are keyed out and the background can be seen there. All other pixels are rendered as a black mask. In the third image, the result was inverted.

Allows keying out any RGB color included in the picked Color Range. In the second image a bright yellow color (RGB 255,255,0) and a small range was chosen which means that most dark colors, dark red, dark green and  yellow tones are keyed out and the background can be seen there. In the third image, the result was inverted.

Allows keying out any RGB color by adjusting the Color Range, Threshold, Radius. In the second image a yellow color was chosen which means that all yellow parts from the layer texture are keyed out and the background can be seen there whilst all other pixels are rendered as a black mask. In the third image, the result was inverted.

Allows keying out any RGB color by adjusting the Color Range, Threshold, Radius. In the second image a yellow color was chosen which means that all yellow parts from the layer texture are keyed out and the background can be seen there. In the third image, the result was inverted.

This effect is useful in blue screen applications. After keying out the blue color, e.g. with an "RGB key" effect, sometimes there is a blue spill left (very light or dark blue pixels), which is depicted in the second image. This Spill Reduce effect reduces the blue value in all colors but affects colors with a red or green value less. In other words, pure blue colors are darkened fully (RGB 0,0,255 > 0,0,0) whilst yellow, cyan and purple  change less (RGB r,g,255 > r,g,128) and red and green stay unchanged. The intensity of the reducing accords to the value of the Mix parameter (Mix 0>255). Note that depending on the colors of the cut out object, another blue spill effect might give better results, or more RGB keys set to light and dark blue.

This effect is useful in blue screen applications. After keying out the blue color, e.g. with an "RGB key" effect, sometimes there is a blue spill left (very light or dark blue pixels), which is depicted in the second image. This Spill Reduce effect reduces the blue value in all colors without a green value. In other words, blue colors are darkened (RGB 0,255,0 > 0,0,0) and purple colors turn red (RGB 255,0,255 > 255,0,0) whilst red, green, yellow and cyan stay unchanged. The intensity of the reducing accords to the value of the Mix parameter (Mix 0>255). Note that depending on the colors of the cut out object, another blue spill effect might give better results, or more RGB keys set to light and dark blue.

This effect is useful in blue screen applications. After keying out the blue color, e.g. with an "RGB key" effect, sometimes there is a blue spill left (very light or dark blue pixels), which is depicted in the second image. This Spill Reduce effect reduces the blue value in all colors without a red value. In other words, blue colors are darkened (RGB 0,0,255 > 0,0,0) and cyan colors turn green (RGB 0,255,255 > 0,255,0) whilst red, green, yellow and purple stay unchanged. The intensity of the reducing accords to the value of the Mix parameter (Mix 0>255). Note that depending on the colors of the cut out object, another blue spill effect might give better results, or alternatively more RGB keys set to light and dark blue.

This effect is useful in green screen applications. After keying out the green color, e.g. with an "RGB key" effect, sometimes there is a green spill left (very light or dark green pixels), which is depicted in the second image. This Spill Reduce effect reduces the green value in all colors but affects colors with a blue or red value less. In other words, pure green colors are darkened fully (RGB 0,255,0 > 0,0,0) whilst yellow, cyan and purple  change less (RGB r,255,b > r,128,b) and red and blue stay unchanged. The intensity of the reducing accords to the value of the Mix parameter (Mix 0>255). Note that depending on the colors of the cut out object, another green spill effect might give better results, or more RGB keys set to light and dark green.

This effect is useful in green screen applications. After keying out the green color, e.g. with an "RGB key" effect, sometimes there is a green spill left (very light or dark green pixels), which is depicted in the second image. This Spill Reduce effect reduces the green value in all colors without a blue value. In other words, green colors are darkened (RGB 0,255,0 > 0,0,0) and yellow colors turn red (RGB 255,255,0 > 255,0,0) whilst red, blue, cyan and purple stay unchanged. The intensity of the reducing accords to the value of the Mix parameter (Mix 0>255). Note that depending on the colors of the cut out object, another green spill effect might give better results, or more RGB keys set to light and dark green.

This effect is useful in green screen applications. After keying out the green color, e.g. with an "RGB key" effect, sometimes there is a green spill left (very light or dark green pixels), which is depicted in the second image. This Spill Reduce effect reduces the green value in all colors without a red value. In other words, green colors are darkened (RGB 0,255,0 > 0,0,0) and cyan colors turn blue (RGB 0,255,255 > 0,0,255) whilst red, blue, yellow and purple stay unchanged. The intensity of the reducing accords to the value of the Mix parameter (Mix 0>255). Note that depending on the colors of the cut out object, another green spill effect might give better results, or alternatively more RGB keys set to light and dark green.

Allows keying out white parts of the image based on the luminance values, all other parts will be masked black. This result can be inverted: transparent areas get black.
In order to key out only white with the possibility not to get any transparency for other light parts, use RGB key instead.

Allows keying out white parts of the image based on the luminance values. This result can be inverted: transparent areas get white.
In order to key out only white with the possibility not to get any transparency for other light parts, use RGB key instead.