When working with green screen and blue screen you can sometimes find slight color fringing around the edge of a key after the colored background has been removed. This is called color spill, and is caused by the background color blending with the subject color. Where this occurs, the pixels are not green enough to be included in the key. The Spill Removal effect removes or reduces this color fringing, by identifying areas with relatively high green values (or blue values when working with blue screen), and removing the green (or blue) in those areas.
- Screen Color: Select the color of the background used in the source video. Red, Green, or Blue can be selected.
- Strength: Adjusts the intensity of the effect. Higher values remove more of the selected color.
- Suppression Type: Choose the type of suppression used to remove the color. The main difference is how the hues near the selected color are affected.
- Standard: Removes a smaller range of colors, which can help to retain accurate color in your image in some cases. Particularly if you are green screening a subject which contains bright yellows, this option is useful.
- Extended: The default option, which affects the largest range of colors. This gives the best results in most cases, but if you find that the colors of your subject are being altered, try switching to Standard to see if it gives better color accuracy.