Change video playback speed
Drag & drop video file here
Supports MP4, MKV, AVI, MOV, WebM and more
Drag & drop or browse. All major formats supported.
Choose from 0.25x to 4x. Adjust with precision.
Get your speed-adjusted video. Audio pitch preserved.
Adjust playback speed from 0.25x slow motion to 4x fast forward. Audio pitch is intelligently preserved so voices and music still sound natural.
Slow Motion (0.25x–0.75x)
Dramatic slow-mo for sports and cinema
Speed Up (1.5x–4x)
Faster playback for efficiency and timelapses
Pitch Preservation
Audio stays natural at any speed
Speed adjustment transforms how your content feels and flows.
Turn hours of footage into mesmerizing timelapse videos — sunsets, construction, cooking, and more.
Slow down action shots for sports analysis, dance tutorials, or dramatic effect in films.
Speed up boring parts and slow down key moments to create perfectly paced educational content.
Adjust video speed to match music beats for choreography videos, montages, and edits.
Your files never leave your device. Everything is processed using WebAssembly and browser APIs — no server uploads, no data collection, no privacy concerns.
Powered by Mediabunny and ffmpeg.wasm — multi-threaded, hardware-accelerated encoding that makes media processing feel instant.
MP4, MOV, MKV, WebM, AVI, FLAC, WAV, AAC — if it exists, we handle it. Full multi-channel audio support with surround preservation.