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Runs entirely in your browser via FFmpeg WebAssembly. Your video never leaves your device. Starts loading the ~30 MB converter as soon as you pick a file (cached after that — free after the first time).
Upload a video to preview

How to change a video's speed

Upload your video, choose a speed multiplier from 0.25x to 4x, and click Apply. Audio stays in sync automatically, so the result sounds natural at any speed — no separate pitch correction step.

Made for Etsy and Shopify sellers

AI-generated product videos often come out a little slow and floaty; phone footage sometimes drags in the middle. A quick speed pass tightens up the pacing before a clip goes into an Etsy listing, a Shopify product page, or a video mockup.

FAQ

Is this video speed changer really free?
Yes — changing video speed is completely free with no sign-up, no watermark, and no daily limit. Scaylr makes money from its mockup generator, not this tool.
Does my video get uploaded anywhere?
No. Speed changes run entirely in your browser using FFmpeg WebAssembly. Your video file is never sent to a server — it stays on your device the whole time.
Does changing speed also change the pitch of the audio?
This tool keeps the audio in sync with the new speed automatically, so a sped-up clip doesn't end up with chipmunk-pitched sound and a slowed-down clip doesn't drag.
Why does my AI-generated video feel slow?
Many AI video generators default to a slightly slow, floaty pace. Speeding a clip up to 1.25x-1.5x often makes it feel snappier and more natural for a product listing or social post.
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