ffmpeg-chromakey

What problem does it solve?

Keying from greenscreen/blue-screen footage is error-prone and time-consuming without a repeatable workflow. This skill provides FFmpeg-based methods to extract a subject using chromakey, colorkey, hsvkey, or lumakey, apply spill suppression, and composite onto a new background while preserving alpha where supported.

Core Features & Use Cases

• Supports multiple keying methods (chromakey, colorkey, hsvkey, lumakey) for robust results across uneven lighting.
• Includes despill and background subtraction to reduce color spill and isolate the subject in complex backgrounds.
• Provides an alpha-capable output workflow via the included scripts for deterministic keying, export of keyed clips, or on-the-fly compositing with a background.

Quick Start

Key out a greenscreen in subject footage and composite onto a new background using the ffmpeg-chromakey workflow.