This is a paid asset, but now you can download Chroma Key Kit Free.
Detail this asset from Unity Store: Original Link
Chroma Key Kit v2.3 (Latest version)
ChromaKeyKit delivers a background removal feature with a wide range of chroma key color options.
Features:
• New: supports AVPro Live Camera
• supports VideoPlayer & Image
• WebCamPlayer component
• compatible with UI/Renderer/Image
• any key color
• any number of key colors
• additional shaders for used material
• customizable shaders combinations
• sequence of shaders (chroma→blur→mask)
• key color options (tolerance, luma)
• blur options (spread vectorpower, iterations)
• mask options (alpha edgepower)
• filter options (huesaturationbrightnesscontrastetc…)
Manual
For any questions email at [email protected]