Video Speed Changer
Speed up or slow down any video.
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Loading FFmpeg (~24 MB). This only happens once.
Drag and drop a video here, or browse
Processing...
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Frequently Asked Questions
What speed options are available? +
Preset speeds include 0.25x, 0.5x, 0.75x, 1.5x, 2x, 3x, and 4x. You can also enter any custom speed value between 0.1x and 10x.
Does changing the speed affect audio pitch? +
No. The audio is resampled to maintain its original pitch while matching the new speed. Voices will sound natural at any speed.
What video formats are supported? +
Most common formats work, including MP4, WebM, MOV, AVI, and MKV. The output is always MP4 for maximum compatibility.
Is there a file size limit? +
Processing happens in your browser using FFmpeg WebAssembly. Very large files (over 2GB) may cause issues depending on your device's available memory.
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