Tools/Video Speed Controller (0.25×–3×)

Video Speed Controller (0.25×–3×)

Speed up or slow down any video directly in your browser — free, private, and no installation required

Speed Up Your Video

Select Speed

Drag and drop your video file here

or click to browse (max 500MB)

This tool works entirely in your browser. Your videos are never uploaded to any server.

Why Use This Online Video Speed Controller

A fast, free, and private way to adjust video speed — entirely in your browser with no uploads and no quality loss.

100% Browser-Based

All processing runs locally in your browser. No server uploads, no processing queues — your files stay on your device at all times.

Wide Speed Range (0.25×–3×)

Dial in super-slow 0.25× for step-by-step tutorials, or crank up to 3× for quick demos. Audio pitch is automatically corrected to stay natural at any speed.

No Quality Loss

The tool preserves your original resolution and bitrate. Only the playback speed changes — there is no re-encoding that degrades visual quality.

Complete Privacy

Your video files never leave your device. Unlike other online tools that upload your content to remote servers, all processing happens client-side.

No Sign-Up or Installation

No software downloads, browser extensions, or accounts required. Just open the page and start adjusting — works instantly in Chrome, Edge, and Brave.

Supports All Common Formats

Works with MP4, WebM, MOV, AVI, and MKV files up to 500 MB. Compatible with screen recordings, tutorials, product demos, and any other video content.

Frequently Asked Questions

How do I change the speed of a video online?

Open Cap's Video Speed Controller, drag and drop your video file (or click to browse), select your target speed from 0.25× to 3×, then click Speed Up or Slow Down Video. The entire process runs in your browser — your file never leaves your device. Once processing is complete, preview and download the result.

What video formats does the speed controller support?

MP4, WebM, MOV, AVI and MKV are all supported — essentially any video format modern browsers can decode. Chrome is recommended for the best compatibility and performance.

Is the video speed controller free?

Yes, completely free with no limits on the number of videos you can process. There are no watermarks, no sign-up required, and no hidden fees. The tool runs entirely in your browser at zero cost.

Will my video quality change when I adjust the speed?

No. The tool preserves your original resolution and bitrate — only the playback speed changes. There is no re-encoding that degrades visual quality. Audio pitch is also automatically corrected to stay natural at the new speed.

Is there a file size limit?

Up to 500 MB for smooth in-browser performance. For larger files, consider trimming the video first to keep only the section you need, then adjusting the speed.

Why is processing taking a long time?

Browser-based video processing relies on your device's hardware. Older CPUs or GPUs, throttled mobile devices, and very long or high-resolution videos will take longer. For fastest results, use Chrome on a modern desktop or laptop.

Does this work on iPhone or Android?

Yes — modern Safari, Chrome, and Firefox on mobile are supported, though Chrome on desktop delivers the most reliable performance. If you encounter issues on mobile, try Chrome or Firefox instead of the default browser.

Do I need to install any software?

No. The tool runs entirely in your browser — no downloads, no plugins, no extensions required. Just open the page and start adjusting your video speed. All processing happens locally on your device for complete privacy.

Movsy — сервис для записи экрана

Record, edit, and share video messages with Cap. 100% open source and privacy focused. No speed adjustments needed — just hit record.

Download Cap Free