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Speed Up a Video Free Online

Speed up a video or slow it into slow motion in seconds. Wondering how to speed up a video or how to make a video into slow motion? Choose a preset or dial in a custom speed with this free video speed changer online. No account, no watermark, no monthly cap.

Supports MP4, MOV, MKV, WebM up to 2GB.

MP4 MOV MKV WebM

Output: MP4 at your chosen speed

Choose a speed

speed

Click to upload or drag & drop

MP4 · MOV · MKV · WebM · Up to 2GB

Speed: 1.5x (Faster)

Processing time depends on file size and your upload speed.

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No account required

Just upload and go. Nothing to sign up for, no email, no credit card.

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No watermark, ever

Your sped-up or slow-mo video comes back clean. No branding, no logo stamp.

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Files deleted in 15 minutes

Your video does not live on our servers. Privacy by default.

How It Works

1

Choose a speed

Pick a preset between 0.5x and 2x, or use the Custom slider for any value from 0.25x to 4x.

2

Upload your video

MP4, MOV, MKV, or WebM up to 2GB. Drag and drop or click to browse.

3

Download the MP4

VidClean re-encodes with libx264 at CRF 23 and runs audio through the atempo filter, so pitch is preserved at any speed, no chipmunk effect.

Who uses this

Creators speeding up tutorials, time-lapsing screen recordings, or slowing footage down for a slow-mo effect. Editors prepping clips for social platforms that reward tight pacing. Anyone who needs a faster or slower MP4 without firing up a desktop editor.

Pick a speed, drop your video, get the new MP4 back.

Frequently Asked Questions

Everything you need to know about changing video speed.

What speeds can I set? expand_more

Presets from 0.5x to 2x, or custom speed from 0.25x to 4x using the slider.

Does changing speed affect audio pitch? expand_more

No. VidClean uses the atempo filter which adjusts speed without the chipmunk effect - pitch is preserved.

What formats are supported? expand_more

MP4, MOV, MKV, and WebM. Output is always MP4.

Is the video speed changer free? expand_more

Yes. No account, no watermark. Files are deleted 15 minutes after download.

Also try: Trim Video at vidclean.net/trim-video

Last updated: May 28, 2026