Files are not uploadedNo server stores, forwards or analyzes your media.
Video tool / SpeedStandard
Change Video Speed
Speed up or slow down video and audio together from 0.5× to 2×.
01
Local readBrowser memory
02
Device processingWASM Worker
03
Save resultBack to your disk
0 uploads
Capability noteExtreme speed changes can slightly reduce audio quality.
Drop a video here
or choose files from this device; media content is never uploaded
video/* · .mkv · .movProcessing settings
Changes picture and sound speed together
Processed only on this deviceChanges picture and sound speed together
Cancel at any timeCancel terminates the Worker and clears the virtual file system.
You save the resultDirect file writing is used when available, with browser download as fallback.
How it works
Speed up or slow down video and audio together from 0.5× to 2×.
- Choose media from this device.
- Set the options and review the local preview.
- Run the tool and save the result back to your device.
Formats
- Input
- Common video files supported by the bundled engine
- Output
- MP4
Privacy
Processing happens in this browser with WebAssembly. The selected media is not sent to our servers.
Limitations
Extreme speed changes can slightly reduce audio quality.