How to blur faces in a video on your phone

Why blur faces before you post

A face is the fastest way to identify someone. Strangers in the background of a street video, other children at a birthday party, a colleague who didn’t want to be filmed: once the clip is public, you can’t take it back.

Most video editors make you track each face by hand, frame by frame. Online “face blur” sites are faster, but they ask you to upload the video first — which is exactly the kind of exposure you were trying to avoid.

How to do it in Blurize

1. Pick your video

   Open Blurize and tap Select Video. Choose the clip from your gallery. Blurize never changes the original file.

   

2. Let it find the faces

   Tap Detect Faces. Blurize goes through the video and shows each person it found as a separate thumbnail, so you choose people, not frames.

   

3. Choose who to hide

   Tap the faces you want hidden. If it’s easier, select only yourself and turn on Keep selected sharp to hide everyone else.

   

4. Pick a style and save

   Choose Blur, Pixelate, B&W, a solid color or an emoji, check the preview, then export. The new video is saved to your gallery with the sound intact.

   

Tips for a clean result

• People who turn away and back are usually recognised as the same person, but check the preview once before you share.
• Automatic detection can miss a face at an odd angle or partly hidden. If it does, add it by hand in the editor.
• For crowded scenes, Keep selected sharp is much faster than tapping every stranger.
• Want to hide a voice too? Blurize can change voices in the same video.