When working with green or blue screens, you often see a “halo” or colored reflection on your subject even after removing the background. These are known as “spills.” Shotcut provides two filters to fix this: Key Spill: Simple and Key Spill: Advanced.
Key Spill: Simple – Quick & Easy Spill Removal
The Key Spill: Simple filter is designed for speed. It works by automatically desaturating the key color (green or blue) across the entire frame to neutralize reflections on your subject.
When to Use
Use this for quick fixes when your subject doesn’t have many other colors that might be affected by desaturation.
How to Apply
- Apply Chroma Key First: You must have a Chroma Key: Simple or Chroma Key: Advanced filter active on your clip first.
- Add the Filter: Click the + button in the Filters panel, search for Key Spill: Simple, and add it below your Chroma Key filter.
- Select Color: Choose the target color (Green or Blue) to see immediate results.
Pro Tip
If you find that this filter makes your subject look too gray or “washed out,” try adding a Hue/Lightness/Saturation filter after it to bring back some of the lost color vibrancy.