Speed up or slow down a video from 0.25x to 4x, with an option to keep or drop the audio pitch correction.. Video Speed Changer is a free online tool from the ToolsRift Video Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
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How to use Video Speed Changer
Load your video, choose a speed multiplier between 0.25x and 4x, decide whether to keep the audio, and export the retimed clip.
Frequently asked questions
Does speeding up a video change the audio pitch?
By default the audio is resampled to match the new speed, which raises pitch when speeding up and lowers it when slowing down — like a classic tape effect. You can disable audio entirely if you prefer.
What speed range is supported?
From 0.25x (four times slower, for smooth slow motion) up to 4x (four times faster, for timelapse-style clips).
Will a slowed-down video look choppy?
Slowing down reuses existing frames rather than generating new ones between them, so very slow settings on low-frame-rate source footage can look less smooth than footage shot at a high frame rate.
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