Pixelate faces in a video
A mosaic that finds the faces itself and stays on them as they move.
Drop files here
or click to choose from your deviceAccepted: MP4, M4V, MOV
One file per runUp to 150 MB per file5 runs per dayRemove limits with Pro✓ Works offline
Your files stay on your device
This tool runs entirely in your browser. Nothing is uploaded, nothing is stored, and you can even turn off your internet connection before you start.
Example
Worked example — Pixelate faces in a video
Use the following inputs and settings.
| Item | Value |
|---|---|
| Input | clip.mp4 · 320 × 240 px · 3 s |
| How faces are covered | Mosaic (pixelate) |
| Output files | 1 |
| Output | clip-faces-pixelated.mp4 |
| Output | 3.02 s |
Expected result — Output files: 1.
How it works
- Add an MP4 or MOV video. The mosaic is already chosen; the sound is copied across untouched. That holds for AAC sound, which phones record; another kind (PCM in a camera MOV) is left out, and the result says so.
- Set how coarse the blocks should be.
- Press Pixelate faces and download the new MP4.
Frequently asked questions
- What is the difference from the blur?
- Only what is drawn over the face. A mosaic reads as deliberate, which is why broadcast uses it, and coarse blocks cannot be undone by sharpening the way a light blur sometimes can. Everything else — finding the faces, following them, holding a face the detector loses for a moment — is the same.
- Does the mosaic follow a moving face?
- Yes. Every frame is looked at separately, so the blocks move with the person; a face lost for a moment keeps its mosaic for about half a second, widening while it is held.
- Is my video uploaded?
- No. The detector runs in your browser and the video never leaves your device.
Related tools
▩ Blur faces in a video Faces found and covered frame by frame, moving with the people in them. Nothing is uploaded. ▩ Blur part of a video Mark what to hide on one frame; it stays hidden for the whole clip. ▩ Image tools Pixelate faces Faces are found for you, and you check the result before anything is saved. • Crop video A landscape video made vertical or square, the part you choose kept.