---
title: "FFmpeg Thumbnail Mosaic Generator"
description: "Creates video thumbnail mosaics and sprite sheets using FFmpeg filters and the fluent-ffmpeg Node.js wrapper. Generates contact sheets, animated GIF previews, and WebVTT thumbnail tracks."
verification: "security_reviewed"
source: "https://github.com/FFmpeg/FFmpeg"
category:
  - "Image & Creative Automation"
framework:
  - "Claude Code"
tool_ecosystem:
  github_repo: "ffmpeg/ffmpeg"
  github_stars: 58972
---

# FFmpeg Thumbnail Mosaic Generator

Creates video thumbnail mosaics and sprite sheets using FFmpeg filters and the fluent-ffmpeg Node.js wrapper. Generates contact sheets, animated GIF previews, and WebVTT thumbnail tracks.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/ffmpeg-thumbnail-mosaic-generator/)