c-ffmpeg
Installation
SKILL.md
FFmpeg — Creative Studio Video Engine
FFmpeg powers every video operation: compositing, chroma key, layout assembly, audio mixing, trimming, and delivery verification.
Non-Negotiable Rules
1. Chroma key color is always 0x00FF00.
Never sample green from the video. Never trust a b-roll plan's color value. Always use #00FF00 two-pass:
colorkey=0x00FF00:0.25:0.05,colorkey=0x00FF00:0.40:0.01
chromakey filter is NOT available in this build — always use colorkey.
2. Never crop-and-stretch the avatar. That distorts the aspect ratio.
- WRONG:
crop=1920:880,scale=1920:1080 - RIGHT:
scale=2208:1242,crop=1920:1080:144:0(1.15x zoom, then crop — preserves ratio)