Ajouter et position areas
Faites glisser un box à move it. Faites glisser un corner à resize it. Utiliser arrow keys pour precise movement.
Traité localement
Blur un region dans vidéo
Sélectionner one ou plus areas dans votre vidéo à hide faces, license plates, screens, ou sensitive détails. Everything s’exécute localement dans votre navigateur.
Aucun envoi de fichierAperçu en directMP4, MOV, WebM, MKV, AVI · up à 2 GB
Good pour
Faces, license plates, chat messages, screens, addresses, et autre détails that devrait stay privé.
Traité localement
Aucun envoi de fichier
Aucun envoi de fichier
Aperçu en direct
Faites glisser un box à move it. Faites glisser un corner à resize it. Utiliser arrow keys pour precise movement.
Faites glisser un box à move it. Faites glisser un corner à resize it. Utiliser arrow keys pour precise movement.
MP4
Exports un MP4 et keeps le original audio quand le navigateur peut encode it.
Exports un MP4 et keeps le original audio quand le navigateur peut encode it.
Comment ça marche
Blur exactly quoi vous besoin
Cover chaque sensitive détail avec un separate selection. Le même areas et blur strength sont applied à chaque image dans le exported vidéo.
Tune le strength
Choisir un subtle ou strong Gaussian blur pour le contenu.
Aperçu et exporter
Check chaque area, then render un nouveau MP4 localement.
Votre vidéo stays sur this appareil
Le navigateur decodes, blurs, et encodes chaque image localement avec MediaBunny et WebCodecs. Votre source vidéo est jamais envoyé.
FAQ
Questions fréquentes
Va my vidéo être envoyé?
Non. Le sélectionné vidéo est lire et traité localement dans votre navigateur. It est pas sent à MediaKit ou any third-party serveur.
Peut I blur plus que one area?
Oui. Ajouter up à six independent areas et position ou resize chaque one avant exporting.
Peut I blur un moving face?
Le actuel version applies fixed areas à chaque image. Pour un moving subject, utiliser un plus grand area ou exporter shorter segments avec le vidéo trimmer.
Va le audio être kept?
Le original audio piste est kept quand le MP4 sortie et le navigateur codec prise en charge it.
Pourquoi est exporter slower pour grand vidéos?
Chaque image doit être decoded, composited, et re-encoded. High-resolution ou long vidéos besoin plus CPU temps et mémoire; closing autre heavy tabs peut 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