What is ffmpeg-mcp-lite CLAUDE.md?

A project guide for ffmpeg-mcp-lite, a Python server that lets an AI assistant use FFmpeg to process video and audio. FFmpeg is a tool for converting and manipulating media files.

Use it when installing dependencies, starting the server, running tests, checking types, or linting the ffmpeg-mcp-lite codebase.

It gives contributors the project structure, required tools, dependency setup, and commands needed to run and check the server.

How kevinwatt/ffmpeg-mcp-lite configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to kevinwatt/ffmpeg-mcp-lite. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/kevinwatt/ffmpeg-mcp-lite/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/kevinwatt/ffmpeg-mcp-lite

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

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Your own site

<a href="https://agentmods.dev/instructions/kevinwatt/ffmpeg-mcp-lite/claude-md"><img src="https://agentmods.dev/badge/instructions/kevinwatt/ffmpeg-mcp-lite/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

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Per session 730 This file is loaded in full into every session.

When invoked 730 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00730	$0.00730
Opus 5.5	$0.00292	$0.00292
Sonnet 5.5	$0.00146	$0.00146
Haiku 4.5	$0.00073	$0.00073

Measured 2mo ago against content hash 57ac5cc6394d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ffmpeg-mcp-lite CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 96 lines

How it starts

The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

FFmpeg MCP Server (ffmpeg-mcp-lite) - An MCP (Model Context Protocol) server providing video and audio processing capabilities through FFmpeg.

Repository: https://github.com/kevinwatt/ffmpeg-mcp-lite
PyPI: https://pypi.org/project/ffmpeg-mcp-lite/

Technology Stack

Language: Python 3.10+
Framework: FastMCP (from mcp package)
Package Manager: uv
External Dependencies: FFmpeg, FFprobe

Development Commands

# Install dependencies
uv sync

# Run the MCP server
uv run ffmpeg-mcp-lite

# Run tests
uv run pytest

# Run a single test
uv run pytest tests/test_info.py -v

# Type checking
uv run mypy src/

# Linting
uv run ruff check src/

Architecture

Project Structure

src/ffmpeg_mcp_lite/
├── __init__.py      # Package entry, exports main()
├── __main__.py      # Module entry point
├── server.py        # MCP server initialization and tool registration
├── config.py        # Configuration management (env vars, defaults)
└── tools/           # One file per tool
    ├── info.py      # ffmpeg_get_info
    ├── convert.py   # ffmpeg_convert (with scale)
    ├── compress.py  # ffmpeg_compress (with scale)
    ├── trim.py      # ffmpeg_trim
    ├── audio.py     # ffmpeg_extract_audio
    ├── merge.py     # ffmpeg_merge
    ├── frames.py    # ffmpeg_extract_frames
    └── subtitles.py # ffmpeg_add_subtitles

Available Tools (8 total)

Tool	Description
`ffmpeg_get_info`	Get video/audio metadata
`ffmpeg_convert`	Convert format (with optional scale)
`ffmpeg_compress`	Compress video (with optional scale)
`ffmpeg_trim`	Trim video segment
`ffmpeg_extract_audio`	Extract audio track
`ffmpeg_merge`	Concatenate videos
`ffmpeg_extract_frames`	Extract frames as images
`ffmpeg_add_subtitles`	Burn-in subtitles to video

Read the full file on GitHub · 96 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 96 lines · 730 tokens per session scan A 57ac5cc6394d

Subscribe to this mod's changes

ffmpeg-mcp-lite CLAUDE.md is an instructions file published in the GitHub repository kevinwatt/ffmpeg-mcp-lite (28 stars, last pushed 6mo ago), licensed MIT. It adds 730 tokens to every session, about $0.0029 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Creative and media ai audio claude ffmpeg mcp model-context-protocol

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ffmpeg-mcp-lite: Instructions file for Claude Code