Speed Up or Slow Down Video — Free
Change video playback speed. Create slow-motion or time-lapse effects.
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Works Everywhere
Any browser, any device
How to Convert
Upload your video.
Select playback speed.
Download the result.
About Change Video Speed
Speed adjustment transforms the pacing of your videos, creating dramatic slow-motion effects, time-lapse sequences, or simply condensing long content into shorter, more engaging clips. Our tool precisely controls playback speed while maintaining smooth motion and properly adjusted audio.
Speed options range from 0.25x (quarter speed slow motion) to 4x (quadruple speed time-lapse). Slow motion reveals details invisible at normal speed, making it perfect for sports analysis, product demonstrations, or artistic effect. Speed increases compress time, ideal for progress videos, surveillance review, or creating engaging summaries of longer content.
Sports coaches create slow-motion analysis of player techniques and game moments. Fitness instructors slow down exercise demonstrations to show proper form. Construction companies speed up project documentation to create impressive time-lapse portfolios. Cooking channels speed through prep work while keeping key steps at normal speed.
Our speed processing includes intelligent audio handling. When speeding up video, audio pitch can be preserved for natural-sounding speech, or allowed to rise for a chipmunk effect. Slow motion can maintain normal pitch or lower it for dramatic effect. For extreme speed changes, you can choose to remove audio entirely.
Common Use Cases
- •Create slow-motion sports and action analysis
- •Speed up long tutorials or process videos
- •Make time-lapse videos from regular footage
- •Slow down exercise demonstrations for clarity
- •Compress meeting recordings for quick review
How It Works
Our speed changer uses FFmpeg's setpts filter for video timing and atempo filter for audio. The atempo filter preserves pitch during speed changes. For speeds outside the 0.5x-2x range, multiple atempo passes are chained for accurate results.