Use this free video speed changer to accelerate lectures and meetings or create cinematic slow motion—no software to install. Pick presets from 0.25× to 4×, fine-tune with a slider, choose how audio is handled, and export MP4.
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Recommended next steps based on what you're working on — pick up where this tool leaves off.
Script, voiceover & export in one place — ship polished videos fast.
Generate AI videos from text or images
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Reduce file size without re-uploading to a server
Compress and optimize for upload
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Blend MP3/WAV/M4A with your clip, mute original optional
Add music or voiceover to your video
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Generate subtitles for your videos automatically
Add subtitles for social reach
OpenUpload from your computer or phone. We decode in the browser—no cloud upload is required for the speed change itself.
Use presets (0.25×–2×) or the slider (0.25×–4×). Keep natural pitch where possible, allow classic speed-up pitch shift, or export silent video.
Run the encoder, preview the result, then download an H.264 MP4 ready for social or editing workflows.
Skip heavyweight editors for a simple global speed change. This video speed changer is great for shortening screen recordings or trying slow-mo ideas before a full edit.
Six one-tap speeds from 0.25× to 2×, plus a continuous slider and numeric input up to 4× for exact control.
Works with formats your browser can decode—typically MP4, MOV, WEBM, AVI, and often MKV. Export is standardized MP4 for sharing.
Nothing to install; modern desktop and mobile browsers supported. Processing uses your device’s CPU/GPU.
This tool applies one speed to the whole file. Trim out the segment you need first (see our video trimmer), adjust speed here, then merge again in your editor if necessary.
Processing on this page runs entirely in your browser.
Yes—modern mobile browsers are supported. Long or high-resolution clips process slower on phones; Wi‑Fi and shorter sources help.
Common formats such as MP4, MOV, WEBM, AVI, and often MKV work when the browser can decode them. Export from this tool is MP4.
You can choose roughly 0.25× (very slow) through 4× (fast forward). Presets cover 0.25×–2×; use the slider or numeric field for values up to 4×.
Yes—by default we attempt to keep speech sounding closer to the original pitch while changing tempo (approximation). You can switch to classic speed+pitch coupling or mute audio entirely.
0.5× is the sweet spot for many social clips—smooth and noticeable. Use 0.25× for dramatic effect when your footage has enough frame rate (prefer 60 fps sources).
This page exports MP4 (H.264) for broad compatibility. Convert afterward with our video converter if you need MOV, WebM, or another container.
