Hinzufügen und position areas
Ziehen ein box zu move it. Ziehen ein corner zu Größe ändern it. Verwenden arrow keys für präzise movement.
Verarbeitet lokal
Blur ein Bereich in Video
Auswählen eine oder mehr areas in Ihre Video zu ausblenden faces, license plates, screens, oder sensitive Details. Alles läuft lokal in Ihre Browser.
No UploadLive VorschauMP4, MOV, WebM, MKV, AVI · bis zu 2 GB
Good für
Faces, license plates, chat messages, screens, addresses, und weitere Details die should bleiben privat.
Verarbeitet lokal
No Upload
No Upload
Live Vorschau
Ziehen ein box zu move it. Ziehen ein corner zu Größe ändern it. Verwenden arrow keys für präzise movement.
Ziehen ein box zu move it. Ziehen ein corner zu Größe ändern it. Verwenden arrow keys für präzise movement.
MP4
Exports ein MP4 und keeps die Original Audio when die Browser können encode it.
Exports ein MP4 und keeps die Original Audio when die Browser können encode it.
Wie it funktioniert
Blur exactly was Sie benötigen
Cover jede sensitive Detail mit ein separate selection. Die same areas und blur strength sind applied zu each frame in die exportiert Video.
Tune die strength
Auswählen ein subtle oder strong Gaussian blur für die content.
Vorschau und exportieren
Check jede area, dann render ein new MP4 lokal.
Ihre Video bleibt auf diese device
Die Browser decodes, blurs, und encodes jede frame lokal mit MediaBunny und WebCodecs. Ihre source Video ist never hochgeladen.
FAQ
Häufig gestellte Fragen
Will my Video be hochgeladen?
No. Die ausgewählt Video ist lesen und verarbeitet lokal in Ihre Browser. It ist not sent zu MediaKit oder jede third-party server.
Können I blur mehr als eine area?
Yes. Hinzufügen bis zu six independent areas und position oder Größe ändern each eine vorher exporting.
Können I blur ein moving face?
Die current version applies fixed areas zu jede frame. Für ein moving subject, verwenden ein größer area oder exportieren shorter segments mit die Video trimmer.
Will die Audio be kept?
Die Original Audio Spur ist kept when die MP4 Ausgabe und die Browser codec unterstützen it.
Warum ist exportieren slower für groß Videos?
Jede frame must be decoded, composited, und re-encoded. High-resolution oder long Videos benötigen mehr CPU time und memory; closing weitere heavy tabs können help.
Video blur guide
Blur faces and sensitive details in a video online
This free video blur tool lets you cover one or more fixed areas in a video and export a new MP4. Use it for faces, license plates, private messages, addresses, screens, or any detail that should not be visible. No account or upload is required.
Supported video formats
The picker accepts common phone, camera, screen-recording, and editing-app exports. Actual decoding depends on the video codec supported by your browser.
MP4
Best compatibility
Recommended for phones, messaging apps, social platforms, and most browsers.
MOV / M4V
Apple and camera exports
Useful for iPhone, iPad, and camera footage; output is converted to MP4.
WebM
Web-friendly video
A good choice for browser recordings and modern web projects.
MKV / AVI
Existing media files
Accepted up to 2 GB; support depends on the codecs inside the container.
How to blur a video
Protect a video in four steps. The source remains on your device throughout the workflow.
- 01
Add your video
Drop one MP4, MOV, WebM, MKV, AVI, or M4V file into the tool.
- 02
Place the blur areas
Move the selection over a sensitive detail. Add up to six areas and resize each one with its corner handles.
- 03
Preview and tune
Play the preview, use arrow keys for precise positioning, and adjust the blur strength.
- 04
Export and download
Render a new MP4 locally. Download it when the progress reaches 100%.
Common use cases
A fixed blur area works well when a sensitive detail stays roughly in the same place throughout a clip.
Privacy-safe screen recordings
Hide email addresses, chat messages, customer data, API keys, or notifications before sharing a tutorial.
Faces and license plates
Cover a face, vehicle plate, badge, or home number in footage for a quick privacy edit.
Product demos and reviews
Hide unreleased product details, account identifiers, or private dashboards in a recording.
Social and community posts
Prepare event footage, street scenes, or user-generated clips before posting publicly.
How private is the processing?
The selected File is passed to a local Web Worker. MediaBunny reads the container, WebCodecs decodes and encodes the video, and OffscreenCanvas composites the blur on each frame. The source and result stay in your browser; nothing is uploaded or stored on our servers. Remove the file or close the tab when you are finished to release memory.
FAQ
Frequently asked questions
Is this video blur tool free?
Yes. You can blur a video and download the MP4 result for free, without signing up.
Can I blur multiple areas?
Yes. Add up to six independent fixed areas. Select an area from the settings panel, then move or resize it in the preview.
Does it track a moving face automatically?
Not yet. The current workflow applies fixed areas to every frame. Use a larger box, shorter segments, or the video trimmer when the subject moves.
Which output format is created?
The tool exports MP4. The video is re-encoded so the blur can be applied frame by frame, while the original audio is kept when browser support allows it.
Why can an AVI or MKV file fail?
A container can hold many different codecs. Even when the extension is accepted, your browser may not have a decoder for the video or audio stream. MP4/H.264 is the most reliable input.
Does the blur permanently hide the information?
The downloaded MP4 contains the rendered blur. Still review the result before publishing, especially if the sensitive detail is large, high-contrast, or moves outside the selected area.
Why does a long video take time?
Blurring requires decoding, compositing, and encoding every frame. Resolution, duration, frame rate, and the number of areas all affect processing time.
Related video tools and tutorials
Trim a video first
Cut a long recording to the exact section that needs privacy editing.
Open tool or guideAdd a video watermark
Protect ownership or identify a private review copy with a text or logo mark.
Open tool or guideCompress the result
Reduce the MP4 size before sending it in a message or publishing it online.
Open tool or guideMP4 vs WebM guide
Compare compatibility, codecs, playback, and file size before you export.
Open tool or guide