Make a video faster or slower, from 0.25× slow motion to 4× time-lapse, with natural-sounding voices.
Drag the box to move it, or its corners to resize.
With “Keep the voice sounding normal” ticked, speech stays at its natural pitch instead of sounding like a chipmunk or a robot. Untick it for a fun effect.
Yes. Choose 3× or 4× for a quick time-lapse. For an even faster effect, save the result and speed it up again.
Slow motion shows each original frame for longer. Videos filmed at 60 frames per second or more give the smoothest slow motion.
Yes, the sound plays at the same speed as the video. Tick “Remove the sound” to save a silent video.
No. Everything happens in your browser, on your device. Your video never leaves your computer or phone, so it stays private and there's no size limit from us.