---
title: "ffsubsync Subtitle Synchronization Tool"
description: "ffsubsync automatically aligns subtitle files to spoken audio by analyzing timing from a reference video or audio file. It is a strong fit for agent workflows that need to repair drifting subtitles without manual waveform editing."
verification: "security_reviewed"
source: "https://github.com/smacke/ffsubsync"
author: "smacke"
category:
  - "Media & Transcription"
framework:
  - "Multi-Framework"
tool_ecosystem:
  github_repo: "smacke/ffsubsync"
  github_stars: 7659
---

# ffsubsync Subtitle Synchronization Tool

ffsubsync automatically aligns subtitle files to spoken audio by analyzing timing from a reference video or audio file. It is a strong fit for agent workflows that need to repair drifting subtitles without manual waveform editing.

## 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/ffsubsync-subtitle-synchronization-tool/)