Add your video
Drop, paste or choose an MP4, MOV or WebM video.
WAVESPEED AI VIDEO SPEED CHANGER Videos stay on your device
100% FREE
Video Speed Changer0.25× to 4×, pitch kept.
Speed up a long clip or slow down a moment, in your browser.
Preview the speed, then save an MP4. Voices keep their pitch.
0.25× to 4×Pitch keptNo watermark
No sign-up No upload No watermark
Change a video’s speed
Drop a video here, or paste it
MP4, MOV, WebM or MKV · Up to 4 GBNo clip yet? Make one with AI Video GeneratorOr try a clip made with AI
Processed in your browser. Your video is not uploaded.
EXAMPLE CLIPS
Try it on a real clip.
Short clips made with WaveSpeed AI’s video models, landscape and vertical, most with sound. Choose one to compress, trim, crop, speed up or pull the audio out.
THREE SIMPLE STEPS
How to use the Video Speed Changer
Pick a speed
Choose 0.5×, 2× or any speed from 0.25× to 4×. The preview plays at that speed.
Save the MP4
Keep the sound (with its pitch) or remove it, and download the video.
WaveSpeed AI
Need a clip to start with?
Make a short video with WaveSpeed AI, then compress, trim or crop it here for any platform.
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$1 in free credits for eligible new accounts. No card needed. Generators have separate account and credit requirements. The video compressor is free.
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Video Speed Changer FAQ
Do voices sound like chipmunks when I speed up?
No. The sound is time-stretched, so voices keep their pitch at any speed from 0.25× to 4×.
Is slow motion smooth?
Slowing down shows each frame for longer; it doesn’t invent new frames. Clips filmed at 60 fps or more look smoothest when slowed down.
What happens to the frame rate when I speed up?
The output keeps the original frame rate; the extra frames are skipped, so the file doesn’t get bigger.
Is it free and private?
Yes. No account, no watermark, and the video is processed in your browser without uploading.
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