Change Video Speed
Make a clip faster or slower and keep the voice sounding natural.
The video is re-timed frame by frame and the sound is time-stretched, so a 2× clip does not sound like a chipmunk. You can also remove the sound.
The conversion runs inside your browser with WebCodecs, the video engine built into modern browsers. That is why there is no upload, no queue and no file size limit set by us: only your device's memory limits it. Your file stays private.
Planning an export for a platform? Work out bitrate and size with the file size calculator, and check what Reels and TikTok cover with the safe zone checker.
Converter engine: Mediabunny (MPL-2.0) on WebCodecs. MP3 encoding: LAME (LGPL).
How it works
- Drop your file Or tap to choose it. It is read on your device, nothing is uploaded.
- Pick the options If the tool has any, for example quality or target size.
- Save the result Click Convert, wait for 100 %, then Save file.
FAQ
Does the voice get higher when I speed it up?
No. The audio is time-stretched with the pitch kept, the way editing apps do it. Very high speeds like 4× can sound a bit choppy.
Is my file uploaded?
No. The file is processed in your browser and never sent to our server.
Is there a file size limit?
We don't set one. Very large files need enough free memory on your device; a computer handles more than a phone.
Which browsers work?
Chrome and Edge on computers and Android work best. Safari works in recent versions. If your browser lacks a codec, the tool tells you.
Is it free?
Yes. No account, no watermark, no daily limit.