Change Video Speed Online

Speed up or slow down your video from 0.25x to 2x

选择视频文件

或将视频拖放到此处

Drop video file here

支持的格式：MP4、AVI、MOV、WMV、FLV、MKV

Change video speed

1.00x

Mute video

Changing video speed...

Video Speed Changed Successfully!

Your video has been re-timed. Preview it below or download it.

如何运作？

Upload video

Select your video or drag & drop it above

Pick speed

Drag the slider or pick a preset (0.25x – 2x)

Choose audio

Keep the muted default for slow-mo, or uncheck to keep audio

Download

Download your re-timed video as MP4

为什么使用此工具？

Safe & Secure

Files are encrypted during transfer and automatically deleted within 1 hour. Your videos are never stored or shared.

No Installation

Works in any browser on any device. No software to download, no accounts to create.

Free to Use

无需注册 - 免费版，可选升级 Premium

Fast & Easy

Get your re-timed video in seconds — perfect for slow-mo, time-lapse, and tutorials.

Easy to Use

易于使用 - 简单的拖放界面

Audio In Sync

When you keep audio, we re-time it to match the new playback speed without the chipmunk effect.

Frequently Asked Questions

Audio is re-timed by FFmpeg's atempo filter, which keeps pitch reasonable. For extreme slow-mo (below 0.5x) we recommend muting — that's why the mute checkbox is on by default.

Your re-timed video is delivered as a high-quality MP4 file (H.264), compatible with all devices and platforms.

Yes — pick 0.25x, 0.5x or 0.75x to slow your clip down. Note that the source frame rate limits how smooth the result looks.

Speed-shifted audio (especially slowed) often sounds odd. Muting gives a clean result. Uncheck the box if you want to keep the audio.