How to Speed Up or Slow Down a Video (Free)
Speed is a storytelling tool: slow motion adds drama, while a fast timelapse compresses long events into seconds. The Video Speed Changer lets you set playback speed from 0.5x to 2x with the audio kept in sync, right in your browser.
Slow motion vs timelapse
Speeds below 1x stretch time for slow-motion emphasis on action or detail; speeds above 1x compress time for timelapses, tutorials and recaps. Keeping the change within 0.5x to 2x keeps the audio natural-sounding rather than chipmunky or muddy.
How to change video speed
- Open the Video Speed Changer and add your clip. 2. Choose a speed — 0.5x for slow motion, 2x for a fast timelapse. 3. Keep or drop the audio (turn it off for silent screen recordings). 4. Export and download. The work is done locally.
Tips for smooth results
Slow motion looks best on footage shot at a high frame rate. For big speed-ups, consider muting the audio with the Mute Video tool and adding music instead. Trim to the section you want first with the Video Trimmer so you only re-encode what you need.
Try the tool from this guide
Video Speed Changer
Speed up or slow down a video.
Open Video Speed ChangerFrequently asked questions
How do I make a slow-motion video?
Open the Video Speed Changer, choose 0.5x, and export — the clip plays back at half speed with synced audio.
Can I speed a video up?
Yes, up to 2x for a timelapse effect, keeping the audio in sync.
What if my clip has no audio?
Turn off the keep-audio option so silent screen recordings export without errors.
Is my video uploaded?
No. Speed changes happen in your browser, so your footage stays private.
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