Advanced Chroma Key

[Ajaylalwani01]

Feature Request: Advanced Chroma Key Implementation 🎬

Current Situation

• The existing green screen implementation (docs reference) provides basic functionality but has limitations
• Edge blending is not smooth, resulting in visible artifacts
• The current implementation lacks advanced chroma key features

Requested Features

1. Improved edge detection and blending

   • Better handling of semi-transparent edges
   • Smoother transitions between keyed and non-keyed areas

2. Advanced chroma key controls

   • Color selection tolerance adjustment
   • Spill suppression options
   • Edge softening/feathering controls

3. Performance optimization

   • Efficient processing for real-time preview
   • Maintainable performance with high-resolution footage

Use Cases

• Professional video production requiring clean green screen removal
• Content creators needing high-quality compositing
• Projects requiring precise keying of varied footage

[anksji]

On issue #4841:
Implemented a new ChromaKeyEffect component that provides advanced chroma key functionality for video transparency:

Configurable RGB color removal
Fine-tune controls for similarity, smoothness, and spill
Real-time processing with WebGL2
Documentation and examples included in PR #4882

Ready for review and testing.