# Change Video Speed Online - Speed Up or Slow Down Video

> Free online video speed changer: slow a clip to 0.25x or speed it up to 4x. The audio follows along with its pitch preserved. Processed locally, no upload.

- URL: https://qilingtools.com/en/video/speed
- Category: Video Tools (https://qilingtools.com/en/video)
- Tags: [Video](https://qilingtools.com/en/tags/video), [Creative Effects](https://qilingtools.com/en/tags/effects)
- Last updated: 2026-10-26
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Make a video faster or slower. The audio is retimed along with it and keeps its original pitch, so nobody sounds like a chipmunk. Pick 0.25x or 0.5x for slow motion, or 2x and above to tighten up a long screen recording.

## How to use

1. Upload a video file
2. Pick a playback speed — the new duration is shown
3. Click start and download the result

## Features

- 0.25x to 4x
- Audio retimed with pitch preserved
- One click to drop the audio
- MP4 output
- FFmpeg runs locally

## FAQ

### Will slow motion look choppy?

Slowing down stretches the existing frames rather than inventing new ones, so at 0.25x the motion is noticeably steppier than the original. That is expected.

### Does the audio change pitch?

No. Speed changes use a pitch-preserving algorithm, so voices keep their normal tone.

### Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

### Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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