Converter
Video to Re-timed MP4 Converter
Convert Video to Re-timed MP4 locally in your browser. Speed up or slow down videos locally.
Speed range is 0.5× (slower) to 2× (faster).
Add video
MP4, MOV, WebM, MKV, AVI — up to 2 GB per file.
Output format & settings
Speed up or slow down a video and its audio.
Frequently asked questions
Quick answers about converting Video to Re-timed MP4 in your browser.
How do I convert Video to Re-timed MP4?
Add your Video file to the converter, adjust the available options, start the conversion, and download the Re-timed MP4 file. Everything runs in your browser.
Is the Video to Re-timed MP4 converter free?
Yes. The Video to Re-timed MP4 converter is completely free with no sign-up, no watermarks, and no file count limits.
Are my files uploaded to a server?
No. Your files are read and converted locally in your browser, so they never leave your device.
What devices and browsers are supported?
It works in any modern browser on desktop, laptop, tablet, or phone — there is nothing to install.
Are there any limitations?
Large files are slow in WebAssembly and must stay under 2GB.