Agent skill

Ffmpeg Color Grading Chromakey

Complete color manipulation and green screen effects system.

No licenceAuto-check passedMedia & Creative

Install Ffmpeg Color Grading Chromakey

skills CLI

$ npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install ynulihao/AgentSkillOS ffmpeg-color-grading-chromakey --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/ynulihao/AgentSkillOS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/data/skill_seeds/ffmpeg-color-grading-chromakey .claude/skills/ffmpeg-color-grading-chromakey && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "ffmpeg-color-grading-chromakey" agent skill from https://github.com/ynulihao/AgentSkillOS/tree/main/data/skill_seeds/ffmpeg-color-grading-chromakey into .claude/skills/ffmpeg-color-grading-chromakey/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ffmpeg-color-grading-chromakey", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/ynulihao/AgentSkillOS/tree/main/data/skill_seeds/ffmpeg-color-grading-chromakey

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install ynulihao/AgentSkillOS ffmpeg-color-grading-chromakey --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ynulihao/AgentSkillOS.git skills-src && mkdir -p .agents/skills && cp -r skills-src/data/skill_seeds/ffmpeg-color-grading-chromakey .agents/skills/ffmpeg-color-grading-chromakey && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "ffmpeg-color-grading-chromakey" agent skill from https://github.com/ynulihao/AgentSkillOS/tree/main/data/skill_seeds/ffmpeg-color-grading-chromakey into .agents/skills/ffmpeg-color-grading-chromakey/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ffmpeg-color-grading-chromakey", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install ynulihao/AgentSkillOS ffmpeg-color-grading-chromakey --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ynulihao/AgentSkillOS.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/data/skill_seeds/ffmpeg-color-grading-chromakey .cursor/skills/ffmpeg-color-grading-chromakey && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "ffmpeg-color-grading-chromakey" agent skill from https://github.com/ynulihao/AgentSkillOS/tree/main/data/skill_seeds/ffmpeg-color-grading-chromakey into .cursor/skills/ffmpeg-color-grading-chromakey/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ffmpeg-color-grading-chromakey", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/ynulihao/AgentSkillOS.git --path data/skill_seeds/ffmpeg-color-grading-chromakey

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install ynulihao/AgentSkillOS ffmpeg-color-grading-chromakey --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ynulihao/AgentSkillOS.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/data/skill_seeds/ffmpeg-color-grading-chromakey .gemini/skills/ffmpeg-color-grading-chromakey && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "ffmpeg-color-grading-chromakey" agent skill from https://github.com/ynulihao/AgentSkillOS/tree/main/data/skill_seeds/ffmpeg-color-grading-chromakey into .gemini/skills/ffmpeg-color-grading-chromakey/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ffmpeg-color-grading-chromakey", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install ynulihao/AgentSkillOS ffmpeg-color-grading-chromakey

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/ynulihao/AgentSkillOS.git skills-src && mkdir -p .github/skills && cp -r skills-src/data/skill_seeds/ffmpeg-color-grading-chromakey .github/skills/ffmpeg-color-grading-chromakey && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "ffmpeg-color-grading-chromakey" agent skill from https://github.com/ynulihao/AgentSkillOS/tree/main/data/skill_seeds/ffmpeg-color-grading-chromakey into .github/skills/ffmpeg-color-grading-chromakey/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ffmpeg-color-grading-chromakey", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install ynulihao/AgentSkillOS ffmpeg-color-grading-chromakey --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ynulihao/AgentSkillOS.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/data/skill_seeds/ffmpeg-color-grading-chromakey .opencode/skills/ffmpeg-color-grading-chromakey && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "ffmpeg-color-grading-chromakey" agent skill from https://github.com/ynulihao/AgentSkillOS/tree/main/data/skill_seeds/ffmpeg-color-grading-chromakey into .opencode/skills/ffmpeg-color-grading-chromakey/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ffmpeg-color-grading-chromakey", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: ffmpeg-color-grading-chromakey
GitHub stars: 618
Token cost: ~4k tokens
SKILL.md length: 382 words
Files: 1
Skills in repo: 26
Repo updated: Mar 7, 2026
First seen: Oct 7, 2026
Licence: None found

At a glance

Complete color manipulation and green screen effects system.

Tasks that involve Video production
SKILL.md covers CRITICAL GUIDELINES, Quick Reference, When to Use This Skill and Green Screen (Chromakey) Removal, plus 6 more sections
Calls ffmpeg

What it does

Ffmpeg Color Grading Chromakey is an agent skill from ynulihao/AgentSkillOS. Complete color manipulation and green screen effects system. PROACTIVELY activate for: (1) Green screen/chromakey removal, (2) Color grading with LUTs, (3) Color correction (levels, curves, white balance), (4) Colorkey/color removal effects, (5) Hue/saturation manipulation, (6) Color space conversions (BT.709, BT.2020, HDR), (7) Color isolation effects, (8) Teal and orange look, (9) Vintage/film looks, (10) Color keying for transparency. Provides: chromakey and colorkey filters, LUT application (lut3d), curves…

Its SKILL.md is about 4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Media & Creative, covering Video production. It works with FFmpeg. The repository describes itself as: Build your agent from 200,000+ skills via skill RETRIEVAL & ORCHESTRATION.

When your agent uses it

Tasks that involve Video production

Example prompts

“/ffmpeg-color-grading-chromakey”

What it can do on your machine

Read from SKILL.md and the folder at commit c3cfae1. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- ffmpeg
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Ffmpeg Color Grading Chromakey loads about 4k tokens when it runs. Until then it costs about 172 tokens; SKILL.md has 382 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~172
When it runs · the whole SKILL.md, loaded when a task matches: ~4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 382 words (~3,973 tokens).

“MANDATORY: Always Use Backslashes on Windows for File Paths”

— opening of SKILL.md by ynulihao

name: ffmpeg-color-grading-chromakey

Outline of SKILL.md

CRITICAL GUIDELINES
Windows File Path Requirements
Quick Reference
When to Use This Skill
FFmpeg Color Grading & Chromakey (2025)
Green Screen (Chromakey) Removal
Basic Chromakey
Chromakey Parameter Tuning
Blue Screen Removal
Sample Green Screen Colors
Advanced Chromakey with Despill
Colorkey Filter (Transparency)
Colorkey vs Chromakey
LUT Color Grading
Apply 3D LUT
LUT Interpolation Methods
Blend Original with LUT
Popular LUT Styles
Color Curves
Preset Curves
Custom Curves
Color Balance
colorbalance Filter
Common Color Balance Presets
Hue and Saturation
hue Filter
eq Filter (Comprehensive)
White Balance
colortemperature Filter (FFmpeg 5.1+)
Manual White Balance

Read the full SKILL.md on GitHub

Files

Just SKILL.md in data/skill_seeds/ffmpeg-color-grading-chromakey of ynulihao/AgentSkillOS.

Open the folder on GitHubat commit c3cfae1

Compare with similar skills

Ffmpeg Color Grading Chromakey next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Ffmpeg Color Grading Chromakey compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Ffmpeg Color Grading Chromakey this skillynulihao/AgentSkillOS	618	—	~4k	Automated safety check: Pass	None	7 mo ago
Video Understandcalesthio/OpenMontage	66k	—	~841	Automated safety check: Pass	AGPL-3.0	6 days ago
HyperFrames Video Entry Pointheygen-com/hyperframes	60k	3 repos	~5.2k	Automated safety check: Pass	Apache-2.0	today
Video Shotseternityspring/reelbench-skills	878	1 repos	~1.8k	Automated safety check: Notes	Apache-2.0	today
Mobile Demo Film Editorsuperset-sh/superset	15k	—	~1.8k	Automated safety check: Pass	Custom licence	today
Video Editcalesthio/OpenMontage	66k	—	~855	Automated safety check: Notes	AGPL-3.0	6 days ago

Similar skills

Video Understand
calesthio/OpenMontage
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66k GitHub stars~841 tokensUpdated 6 days ago
Media & CreativeAuto-check passed
HyperFrames Video Entry Point
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Entry point for making, editing and rendering videos from HTML compositions with HyperFrames, routing each request to the right workflow.
60k GitHub starsUsed in 3 repos~5.2k tokens
Media & CreativeAuto-check passed
Video Shots
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878 GitHub starsUsed in 1 repo~1.8k tokens
Media & CreativeAuto-check: notes
Mobile Demo Film Editor
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Edits real mobile screen recordings into a configurable demo video with phone framing, title cards, cutaways and an end card, using a bundled renderer.
15k GitHub stars~1.8k tokensUpdated today
Media & CreativeAuto-check passed
Video Edit
calesthio/OpenMontage
Edit videos locally using ffmpeg. An agent skill from calesthio/OpenMontage.
66k GitHub stars~855 tokensUpdated 6 days ago
Media & CreativeAuto-check: notes
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Questions about Ffmpeg Color Grading Chromakey

What does Ffmpeg Color Grading Chromakey do?

Complete color manipulation and green screen effects system. Ffmpeg Color Grading Chromakey is an agent skill from ynulihao/AgentSkillOS. Complete color manipulation and green screen effects system.

When should I use Ffmpeg Color Grading Chromakey?

Ffmpeg Color Grading Chromakey fits situations like: tasks that involve Video production.

How do I install Ffmpeg Color Grading Chromakey in Claude Code?

Run `npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a claude-code`. Or copy the skill folder (data/skill_seeds/ffmpeg-color-grading-chromakey in ynulihao/AgentSkillOS) into .claude/skills/ffmpeg-color-grading-chromakey in your project. Claude Code loads it when a task matches its description.

How do I install Ffmpeg Color Grading Chromakey in Codex?

Run `npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a codex`. Or copy the skill folder (data/skill_seeds/ffmpeg-color-grading-chromakey in ynulihao/AgentSkillOS) into .agents/skills/ffmpeg-color-grading-chromakey in your project. Codex loads it when a task matches its description.

Can I use Ffmpeg Color Grading Chromakey in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ynulihao/AgentSkillOS --skill ffmpeg-color-grading-chromakey -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ffmpeg-color-grading-chromakey, .gemini/skills/ffmpeg-color-grading-chromakey, .github/skills/ffmpeg-color-grading-chromakey and .opencode/skills/ffmpeg-color-grading-chromakey in your project.

What does Ffmpeg Color Grading Chromakey need to run?

Going by SKILL.md and its folder, Ffmpeg Color Grading Chromakey needs the command-line tools its instructions call (ffmpeg).

Does Ffmpeg Color Grading Chromakey access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Ffmpeg Color Grading Chromakey safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Ffmpeg Color Grading Chromakey use?

No licence was found for Ffmpeg Color Grading Chromakey or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Ffmpeg Color Grading Chromakey use?

About 4k tokens (SKILL.md is roughly 16k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Ffmpeg Color Grading Chromakey?

Skills that share tags, products or a category with Ffmpeg Color Grading Chromakey: Video Understand (calesthio/OpenMontage, 66k stars), HyperFrames Video Entry Point (heygen-com/hyperframes, 60k stars), Video Shots (eternityspring/reelbench-skills, 878 stars) and Mobile Demo Film Editor (superset-sh/superset, 15k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Ffmpeg Color Grading Chromakey?

ynulihao (a GitHub user) maintains it in ynulihao/AgentSkillOS, which has 618 GitHub stars. The repository holds 26 skills in this directory. The repository was last updated on March 7, 2026.

Source: ynulihao/AgentSkillOS on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Ffmpeg Color Grading Chromakey

Install Ffmpeg Color Grading Chromakey

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

Video Understand

HyperFrames Video Entry Point

Video Shots

Mobile Demo Film Editor

Video Edit

Lemo-Opuscar Short Film Director

More from ynulihao/AgentSkillOS

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Questions about Ffmpeg Color Grading Chromakey

Install Ffmpeg Color Grading Chromakey

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

More from ynulihao/AgentSkillOS

Related

Questions about Ffmpeg Color Grading Chromakey