# Video Speed Controller (Unofficial-FF-Fork)

> Control HTML5 video/audio playback speed with keyboard shortcuts. Unofficial Firefox fork of the original Video Speed Controller project.

Canonical page: [https://chrome-stats.com/d/video-speed-controller-fork](https://chrome-stats.com/d/video-speed-controller-fork)

## Overview

- **ID:** `video-speed-controller-fork`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** forkdons
- **Category:** social-communication
- **Daily users:** 3
- **Weekly downloads:** 1
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 0.9.5
- **Last updated:** 2026-02-26
- **First published:** 2026-02-23
- **Size:** 100 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/video-speed-controller-fork/)

## Description

This add-on is an <strong>unofficial fork</strong> of the original open-source <strong>Video Speed Controller</strong> project by Ilya Grigorik.

Features:
<ul><li>speed up / slow down HTML5 video and audio playback,</li><li>quick rewind / advance,</li><li>toggle preferred speed,</li><li>show/hide on-page controller,</li><li>customizable keyboard shortcuts,</li><li>site blacklist support.</li></ul>
Default shortcuts:
- <code>S</code> slower
- <code>D</code> faster
- <code>R</code> reset to 1.0x
- <code>Z</code> rewind 10s
- <code>X</code> advance 10s
- <code>G</code> preferred speed toggle
- <code>V</code> show/hide controller
- <code>M</code> set marker
- <code>J</code> jump to marker

Project origin notice
<ul><li>This is <strong>not an official release</strong> from the original author.</li><li>Upstream repository: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/e7f733f5f91796d909e1b1615a0b9f126b4f91d04b43d025bbaf708da55789b8/https%3A//github.com/igrigorik/videospeed" rel="nofollow">https://github.com/igrigorik/videospeed</a></li><li>This fork is maintained separately for Firefox distribution.</li></ul>
License

Distributed under the <strong>MIT License</strong>.
The package preserves the original license text (<code>LICENSE</code>) and includes fork attribution (<code><a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/cbc195e343dfef4e833a32bcff26e35187cabb8d4cd64d738a344a37509e8fff/http%3A//FORK_NOTICE.md" rel="nofollow">FORK_NOTICE.md</a></code>) in compliance with MIT requirements.

## Rankings

- #53,810 — Overall
- #45 — fvd speed dial
- #72 — video speed

## Permissions and access

### Permissions

- `storage`
- `activeTab`

### Content script matches

- `*`
- ``

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Video Speed Controller MV3](https://chrome-stats.com/d/video-speed-controller-mv3) — 160 users, 4.70 / 5
- [Video Speed Controller](https://chrome-stats.com/d/videospeed-minimal-patched) — 20 users, 1.00 / 5
- [Video Speed Controller](https://chrome-stats.com/d/videospeed) — 103,331 users, 4.53 / 5
- [Video Speed Controller X](https://chrome-stats.com/d/video-speed-controller-x) — 12 users
- [Playback Speed Controller](https://chrome-stats.com/d/psc-playback-speed-controller) — 6 users
- [Video Speed Controller Global](https://chrome-stats.com/d/video-speed-controller-global) — 30 users
- [Youtube Playback Speed Control (mkr fork)](https://chrome-stats.com/d/yt-speed-control-mkr) — 50 users, 5.00 / 5
- [Video Speed Controller (Magnus Fork)](https://chrome-stats.com/d/videospeed-magnus-fork) — 246 users, 3.80 / 5
- [Video Speed Controller](https://chrome-stats.com/d/video-speed-manager) — 85 users
- [Video Speed Controller](https://chrome-stats.com/d/videospeedcontroller) — 742 users, 4.09 / 5
- [Video Speed Controller(2022)](https://chrome-stats.com/d/video-speed-controller-2022) — 33 users
- [Video Speed Controller Fox](https://chrome-stats.com/d/video-speed-controller-fox) — 9 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/video-speed-controller-fork)