About this tool
Keep just the part you need: enter a start and end time and the clip is cut without uploading a byte. The default mode copies the video stream, so even a long recording trims in seconds with zero quality loss; the trade-off is that cuts land on keyframes, which can be a second or two off. Frame-accurate mode re-encodes the selection for an exact cut.
Output is MP4 whatever the input, with the audio kept. For a GIF from the trimmed part, use Video to GIF, which has its own start and length controls.
Everything happens inside your browser. Your file is never uploaded to a server: the conversion runs on your own device using WebAssembly, and the result is downloaded straight from memory. Close the tab and nothing is left behind.
How to use it
- Drop your MP4 file into the box above, or click to browse. Nothing is uploaded.
- Adjust the options if you want; the defaults suit most files.
- Click the button and wait a moment.
- Download the result.
Frequently asked questions
Why does the trimmed clip start slightly early?
Stream copy can only start at a keyframe. Turn on frame-accurate mode for an exact start time.
Can I cut several segments?
Trim each segment separately, then join them with a video editor; joining is planned here.
Is this really free?
Yes. The site is supported by ads, and there are no limits on how many files you convert.
Are my files uploaded anywhere?
No. The converter runs entirely in your browser. Files stay on your device, which also makes it faster than upload-based converters for anything larger than a few megabytes.
Is there a file size limit?
The only limit is your device's memory. Images and audio of any normal size are fine; for video, files under about 500 MB work well on most laptops and phones.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox, and Safari on desktop and mobile. Very old browsers without WebAssembly support will not work.