Chroma Key
Chroma key is technology that makes it possible to replace an element of a certain color in a video with another one. This is primarily used in film and television production, for example, to remove a background or insert an object into a different scene. Using Chroma key, you can make a specific colored area in a video transparent and replace it with a new background. This offers a wide range of options for designing creative effects or removing unwanted items from your footage.
FIGURE Masked video (on higher track)
FIGURE Background (on lower track)
FIGURE Chroma Keyer used to make green area in masked video transparent
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Item |
Description |
|---|---|
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Color |
Click the arrow You can use the color picker, type color values (or names), or use the eyedropper to sample a color from your screen. The color you select will be keyed out. |
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Sampling tool: |
Click on the eyedropper then on the color in the source video (on the timeline) to determine the transparent key color. |
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Low Threshold |
The Chroma Keyer filter creates a mask for each frame.The mask works similar to an alpha channel.Low Threshold allows adjustment of the luminance value of the mask.Anything in the mask with luminance values below this setting become transparent.Combined with the high threshold setting, a range of luminance is created for the mask. |
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High Threshold |
The Chroma Keyer filter creates a mask for each frame.The mask works similar to an alpha channel.High Threshold allows adjustment of the luminance value of the mask.Anything in the mask with luminance values above this setting become opaque.Combined with the low threshold setting, a range of luminance is created for the mask. |
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Blur amount |
This controls how the edges of the key mask are treated.High values allow the mask to blend more smoothly into the background video. |
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Show Mask Only |
Generates a mask from the settings in the dialog.This is identical to using the Mask Generator to create a mask. |
to show or hide the color controls.