change video speed
make a video faster or slower. audio is time-stretched to match without changing pitch.
runs on your device · free · no sign-up
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frequently asked questions
what speeds are available?
from 0.25x slow motion up to 4x fast forward.
does the sound change pitch?
no. the audio is time-stretched so voices do not sound like chipmunks. you can also drop audio entirely.
is the video uploaded?
no. all processing is local, using ffmpeg compiled to webassembly.