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Video Trimmer & Muter

Cut a clip by start and end time or strip the audio track — processed on your device by FFmpeg compiled to WebAssembly, so the video never leaves your browser.

How to use Video Trimmer & Muter

  1. Drop in a video (MP4, WebM, MOV, or MKV).
  2. Pick Trim or Mute, then set the start/end times — use the Playhead buttons to grab the preview position.
  3. Click the action button and download the result.

Frequently asked questions

Is my video uploaded to a server?
No — FFmpeg runs as WebAssembly inside your browser, so the file is processed entirely on your device.
Why is the cut not exactly where I set it?
The default fast mode copies the video stream without re-encoding, so the cut snaps to the nearest keyframe. Enable "Frame-exact cut" to re-encode for a precise cut (slower).
How large a video can I process?
Processing happens in browser memory, so short clips up to roughly 1 GB work best. Fast trim and mute finish in seconds since nothing is re-encoded.

More Video & Audio Tools

  • Video to Audio Converter (Extract MP3) — Extract the audio track from any video as MP3, WAV, M4A, OGG, or FLAC — converted on your device with FFmpeg WebAssembly, no upload.
  • Audio Cutter & Joiner (MP3 Splitter) — Cut a section out of an audio file or merge multiple tracks into one MP3, WAV, or M4A — processed on your device, no upload.
  • Video Joiner (Merge Clips) — Combine multiple video clips into one file — fast stream-copy for same-source clips or re-encode for mixed formats, all in your browser.
  • Add Audio to Video — Attach one or more audio tracks to a video — replace the soundtrack or mix music and narration over the original sound, with no upload.
  • Video to GIF Converter — Turn a video clip into a high-quality animated GIF — pick the section, size, and frame rate; converted on your device, no upload.
  • Images to GIF Maker — Turn a batch of images into one animated GIF — drag to reorder frames, set the speed, size, and looping. Mixed sizes are normalized automatically. Encoded on your device, never uploaded.
  • Subtitle Burner — Add and time captions, or import an .srt, then hard-burn them onto a video — font, color, outline, and position controls. Rendered on your device with FFmpeg, exports MP4.
  • Audiogram Maker — Turn an audio clip + a background image or color into a waveform video for feeds — square, portrait, story, or landscape. Rendered on your device with FFmpeg, exports MP4.