Free · Edits Locally · Nothing Uploaded

🎞️ Video Blur Out Editor

Upload a video, pause where the blur should start, draw a box over a face, license plate, screen, or anything else, then mark where it should stop. No app to install, no account, nothing ever leaves your browser.

Open Video Blur Out Editor →
Pause, draw a box, play on, mark the end — that region stays blurred just for that stretch
What this saves you
Skip redaction software or hiring an editor just to blur a face or plate in a clip.

What this actually is

  1. 1Upload a video file from your device — MP4, WebM, or MOV.
  2. 2Play the video using its normal controls and pause where you want the blur to start. Click "Draw Blur Box," then click and drag on the frame over whatever you want hidden — that sets the start point.
  3. 3Press play again. When the video reaches where the blur should stop, click "End Blur Here" (or leave it unset to blur through to the end).
  4. 4Click Blur & Export. That box stays blurred in the exact same spot for just that time window, converted to a downloadable MP4.

Fixed region, time-bounded, not a moving tracker

The blur box stays in one fixed position on screen for whatever time window you set — it does not follow a moving subject across the frame. That makes it a good fit for a scene where a face or plate holds roughly still for a few seconds, a static watermark or logo, or a screen recording with a sensitive area on screen for part of the clip. It won't automatically track a face or object as it moves, and outside the time window you set, that area of the frame stays sharp.

Who this is for

Redaction software is built for newsrooms and forensics teams, priced accordingly — most people just need to hide one thing for one stretch of one clip.

  • Journalists protecting a source's identity in video footage before publishing
  • Parents blurring a child's face before posting a video publicly
  • Landlords or building managers redacting a license plate or unit number from footage before sharing it
  • Creators removing a visible screen, document, or sensitive detail from a screen-recorded tutorial
  • Anyone complying with a request to redact part of a video before sending it somewhere

Frequently asked questions

How do I blur part of a video?

Open Video Blur Out Editor, upload a video file, then pause where you want the blur to start, click "Draw Blur Box," and drag a box over the area you want hidden. Press play again, and when the video reaches where the blur should stop, click "End Blur Here" (or leave it unset to blur through to the end). Click Blur & Export.

Does the blur follow a moving subject?

No — the blur box stays in one fixed position on screen, for whatever time window you set (or through to the end of the video if you don't set one). It's built for fixed-position redaction during a specific stretch of the clip, not for tracking a moving face or object across the frame.

Does this upload my video anywhere?

No. The video is loaded and re-encoded entirely in your browser (the conversion uses ffmpeg compiled to WebAssembly). Nothing is sent to a server — the file only exists on your device until you download the result.

What video formats does it accept, and what does it export?

It accepts common formats like MP4, WebM, MOV, and MKV, and always exports MP4 (H.264 video, AAC audio) regardless of what you uploaded.

Why does it take a while to process?

The blur and re-encode both run locally in your browser rather than on a server, so it works best for short clips — 5 minutes or under, no higher than 720p. Longer or higher-resolution videos take proportionally longer.

Is this free?

Yes, completely free, no account or install required.

Can I preview the blur before exporting?

You can review the box position and time window you set before clicking Blur & Export, but the actual blurred result only renders during export.

Does the blur strength adjust automatically?

No — it applies a fixed blur intensity strong enough to obscure typical detail like a face or plate; it isn't adjustable per box.

What happens to audio during the blurred section?

Audio is untouched — only the visual region you selected is affected, for the whole clip.

Being straight about this: the whole video is analyzed and re-encoded locally in your browser — nothing is ever uploaded to a server. The blur box stays in a fixed screen position for the time window you set (or through to the end if you don't set one); it does not track a moving subject. You're responsible for making sure the box actually stays over what you intend to hide for that whole window before you share it.