Change Video Speed
Speed up or slow down your videos. Create dramatic slow-mo effects or fast-paced time-lapses in seconds.
Select a video to retime
MP4 · MOV · WEBM · MKV · AVI — up to 1.00 GB
Your video never leaves your device — everything runs in this tab.
Silent retimes skip encoding entirely and finish in seconds.
Need this in a script? Retime over the API.
Control Time
Whether you want to analyze a fast sports play in slow motion or compress a long drive into a short time-lapse, our speed changer tool gives you full control over playback rate.
Slow Motion
Slow down video to 0.5x, 0.25x or custom rates.
Fast Forward
Speed up video up to 4x or 8x for rapid action.
Audio In Sync
Sound is stretched to match the new speed with its pitch intact, automatically.
How to Change Speed
Upload Video
Select the video file.
Set Speed
Choosing a multiplier (e.g. 0.5x or 2.0x).
Convert
Process the video and download.
Frequently Asked Questions
Does audio speed change too?
Yes — it is stretched or compressed to match, with its pitch preserved, so it stays in sync and speech remains understandable.