Video Cutter & Muter — Free Online, Trim MP4 & Remove Audio, No Upload
Trim any MP4, MOV, or WebM video to a precise segment directly in your browser. Set start and end time, optionally strip the audio track, and export the clipped segment as WebM. 100% client-side, no upload required.
Frequently Asked Questions
How does the browser-based video cutter work?
Load your video file — it stays entirely on your device. Use the start and end time sliders to define the segment you want to keep, bounded by the actual video duration. Optionally check "Mute Audio" to strip the audio track from the output. Click "Export trimmed video" and the tool captures the defined segment using HTMLVideoElement.captureStream() and MediaRecorder, then triggers a direct browser download of the resulting WebM file — no server involved.
Which browsers and video formats are supported?
Chrome and Edge have full support — they provide captureStream() with MediaRecorder using VP8/VP9 and WebM. Firefox also supports the required APIs. Safari has limited support; use Chrome for best results. Input formats can be MP4, MOV (H.264), WebM, or any container your browser can decode natively. The exported output is always WebM.
Does muting the video remove the audio track permanently from the export?
In the exported WebM file, yes — when the mute checkbox is checked, audio tracks are removed from the capture stream before recording begins, so the download contains video only. Your original source file on disk is never modified. To get audio back, simply re-upload the original file and export without the mute toggle enabled.