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Video Trimmer

Cut the start and end off a video, or keep just one part — instantly without re-encoding when possible.

🔒 Your video is processed locally in your browser. Your file is never uploaded.

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How to use the Video Trimmer

  1. Choose a video and play it in the preview.
  2. Set the start and end (use "Set to current time" while watching).
  3. Pick Fast or Precise and download the trimmed clip.

Common use cases

  • Cut the boring start off a screen recording
  • Keep only the highlight of a long clip for social media
  • Shorten a video to fit a 60-second Shorts or Reels limit

Example

Start 00:12.0, end 00:41.5 on a 3-minute MP4 in Fast mode gives a 29-second clip in about a second, with no quality loss.

What the Video Trimmer does

It keeps only the part of a video between a start and end time. Play the video in the preview and press Set to current time at the right moments, or type times like 1:05.5. Fast mode copies the original streams, so it finishes in about a second with zero quality loss. The start snaps to the nearest keyframe, which can be up to a couple of seconds earlier. Precise mode re-encodes and cuts exactly where you say.

After trimming you can continue straight to the Video Compressor or the Video to GIF maker. The clip comes along automatically.

Frequently Asked Questions (FAQ)

Q: Is my file uploaded to a server?
A: No. The tool runs FFmpeg compiled to WebAssembly inside your browser tab. Your file is read directly from your device and the result is created locally. Only the video engine itself (open-source ffmpeg.wasm, about 10 MB compressed) is downloaded the first time, from a public CDN; after that it is cached.
Q: How big can the file be?
A: Up to about 500 MB works well on a computer and about 150 MB on a phone. Larger files may still work but can be slow or run out of browser memory. Trimming the clip or lowering the resolution first helps.
Q: Why is it slower than a desktop app?
A: The browser version of FFmpeg runs on a single CPU core and without hardware acceleration. A 1-minute 1080p re-encode typically takes 1–3 minutes. When possible the tools copy the streams without re-encoding, which takes only seconds.