Video Trimmer — Cut Video Online

This online video trimmer cuts a clip down to the exact segment you need — the intro of a screen recording, one answer from a long interview, the highlight of a game session — without installing an editor and without uploading the file anywhere. Drop an MP4 or WebM video, set the boundaries with two sliders while watching the boundary frame in the preview, and download the result.

The tool takes an honest approach to a real browser limitation: without server-side tools like ffmpeg, a browser cannot cut a video stream losslessly. Instead, the selected segment is played back in a video element and captured in real time through captureStream() into MediaRecorder, which re-encodes it with a codec your browser supports — WebM (VP9 or VP8) everywhere, MP4 where available. The codec list you see is generated live from MediaRecorder.isTypeSupported(), so every listed option genuinely works on your machine.

Two practical consequences follow, and the tool states both up front: trimming takes exactly as long as the selected segment (a 20-second cut records for 20 seconds, audio included), and the output is a re-encoded WebM/MP4 file rather than a byte-exact copy. In exchange you get complete privacy — meeting recordings, lesson videos and personal clips never leave your device — plus no file size limits, watermarks or accounts.

The workflow is built for speed: a filmstrip of thumbnails shows the whole video at a glance, the sliders snap the preview to the exact start and end frame, and the selection readout displays both timestamps and the resulting duration. After capture, the trimmed clip plays right on the page so you can verify it before downloading.