Video speed
Speed up or slow down video
Processed in your browser.
How to change video speed
- 01
Select files
Select or drop one or more videos.
- 02
Choose the speed
Set a speed from 0.25x to 4x, then start processing. Below 1x slows the video down; above 1x speeds it up.
- 03
Download results
Download each result, or save the batch as a ZIP.
Common questions
Does changing speed affect the audio?
Yes. Audio changes speed with the video, and its pitch rises or falls accordingly. Keeping the original pitch is not supported. All audio tracks are processed; an error is shown if they cannot be preserved.
How long will the result be?
The output duration is approximately the original duration divided by the speed. A 10-second video becomes about 5 seconds at 2x, or 20 seconds at 0.5x. You can apply the same speed to multiple videos.
Are my videos uploaded?
No. Videos are processed in your browser without registration. Reloading or closing the page clears your current files and results.
Which formats and file sizes are supported?
Supported containers include MP4, MOV and WebM; codec support depends on your browser. The limit is 500 MiB per file and 1 GiB of source files per batch. Process large files in smaller batches.