Video Trimmer
Cut the part of a video you want to keep and save it as a WebM file, right in your browser.
About Video Trimmer
This video trimmer online lets you cut a video without installing an editor. Drop a video, play to the point you want and click Set start, then Set end, or type exact times. Pick a quality and click Trim video to save just that part.
The trimmed clip is recorded as the selection plays, so it takes about as long as the clip itself, and the output is a WebM file that plays in most browsers and players and uploads to YouTube. There is no watermark and no sign-up, and your video stays on your device.
How to use Video Trimmer
- Drop a video (or try the sample video).
- Play to a point and use Set start / Set end, or type the times.
- Pick a quality and click Trim video.
- Wait while the selection plays through, then download the WebM.
Frequently asked questions
Why does trimming take as long as the clip?
Browsers cannot cut MP4 files without re-encoding, so the tool plays the selected part and records it in real time with the MediaRecorder API. A 30-second clip takes about 30 seconds.
Why is the output WebM and not MP4?
Chrome, Edge and Firefox record WebM (VP8/VP9 + Opus). It plays in browsers, VLC, Android and uploads fine to YouTube and most sites.
Can I switch tabs while it works?
Keep this tab visible. Browsers pause drawing in background tabs, which would freeze the recording.
How do I cut a part of a video online?
Load the video, mark the start and end of the part you want, click Trim video and download the clip when it finishes.
Can I trim an MP4 video here?
Yes. You can load an MP4 video and trim it; the saved clip is a WebM file, which most players and upload sites accept.
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