Video Speed Changer
Speed up or slow down a video and export the retimed result as WebM, all client-side.
Renders at 1× in real time — audio pitch follows the rate (classic chipmunk/slowmo effect, same as HTMLMediaElement playbackRate). Slow-motion ≤ 0.75x is great for sports clips; timelapse ≥ 2x for long recordings.
About Video Speed Changer
Speed up or slow down a video and export the retimed result as WebM, all client-side.
Video Speed Changer works with your video files directly in the browser using modern media APIs — select your files, arrange or process them, and export the result.
How to Use Video Speed Changer
- Select or drop the video files you want to work with.
- Arrange them or choose the processing options offered.
- Preview the result if available.
- Export or download the finished video.
Key Features
- Video processing happens locally — files are not uploaded.
- Works with common browser-supported formats (MP4, WebM).
- No heavy software to install.
Frequently Asked Questions
Does Video Speed Changer upload my videos?
No. Video Speed Changer processes video locally with browser APIs, so your files stay on your device.
Is Video Speed Changer free to use?
Yes. Video Speed Changer is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. Video Speed Changer runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does Video Speed Changer work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.
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Video to GIF Converter
Turn any video into an animated GIF with frame rate, size and quality controls — fully in the browser.
Video Filters
Apply brightness, contrast, saturation, sepia, grayscale and blur filters to a video and export it.