How to use Blur video background
- Drop an MP4 or MOV of a person talking to the camera: a phone recording, a webcam clip or a vlog, up to 2 minutes on a computer and 1 minute on a phone.
- Choose how much to blur the room: Light keeps it recognisable, Medium is like a video call's blur, Strong turns it into a wash of colour.
- Click "Blur the background". The first time, the AI (23 MB) downloads once; then every frame is counted as it is done, with the time left.
- Watch the result on the page, then save the MP4. The sound is the original, copied as it was.
Why use Blur video background
- You stay sharp, the room goes soft
- The person is found on every frame and the blur is worked out behind them, so the edges of your hair and shoulders do not smear into the background the way a plain blur does.
- Phones, cups and papers stay with you
- What you hold up to the camera is kept with you, not blurred away: a phone, a mug, a book, a microphone. On 29 real test clips the person was found on every frame of 26.
- The sound is untouched
- The audio track is copied byte for byte into the new file; only the picture is re-encoded, as H.264 that plays everywhere.
- Nothing uploaded
- The video is read, matted and written in your browser with WebCodecs. A 10-second clip takes about a minute on a computer; the AI downloads once and stays on the device.
About this tool
A blurred background hides a messy room, a shared office or a hotel wall, and keeps the eye on the person, without a green screen or a studio. Video-call apps do it live; this page does it afterwards for a clip you have already recorded, so a vlog, a lesson, a message to a client or a social clip filmed in a bedroom gets the same clean look. The person is found by a small matting model (PP-MattingV2) run on your device on every second frame, the frames between are blended, and the matte is steadied over time so edges do not flicker. The blur is a "halo-free" one: the colours of the person are kept out of the blurred room, which is what makes the result look like a camera's shallow focus rather than a smudge.
It works on a video of a person: one or two people facing the camera, indoors or out, phone or webcam. It does not find a hand holding something with no face in the frame (a product demo filmed over a desk), and a second person in the shot is kept sharp too, since a person model keeps every person. Clips longer than the device's limit are refused with the limit named: 2 minutes and 1080p on a computer, 1 minute and 720p on a phone, so that the work finishes in a few minutes and never runs out of memory. The browser needs WebCodecs: Chrome, Edge or Safari 16.4 and later, Firefox on a computer. For a plain colour or a green screen behind you instead of a blur, use the Remove video background page.
Frequently asked questions
Does my video get uploaded?
No. The video is opened, the person is found and the new file is written in your browser, with the AI model downloaded once to your device. Nothing goes to a server, which is why there is no file limit except the device's own memory and time.
How long does it take?
About a minute for a 10-second 1080p clip on a computer, and two minutes for a 60 fps clip; a phone takes a few times longer, which is why phones are limited to 1-minute clips. The page counts every frame and shows the time left.
Will it blur the phone or the papers I am holding?
No: what you hold stays with you. The person finder keeps hands and the things in them, and on real test clips with phones, cups, books, papers and microphones the subject was kept on every frame of 26 of 29 clips. What it cannot do is find a hand and an object alone, with no face in the frame.
Can I remove the background instead of blurring it?
Yes: the Remove video background page puts a plain white or black wall, or chroma green for a video editor, behind you with the same AI.
Which browsers and phones work?
Chrome and Edge on computers and Android, Safari 16.4 and later on iPhone, iPad and Mac, and Firefox on a computer. Firefox for Android and older browsers cannot encode video on the device; the page says so instead of failing half-way.
Why is the output 720p on my phone?
Phones are limited to a 720p picture and a 1-minute clip so that the job finishes in a few minutes and never runs out of memory. On a computer the limit is 1080p and 2 minutes. The sound is never changed.
What about an iPhone HEVC (.mov) video?
It opens where the browser can decode HEVC: Safari always, Chrome and Edge on computers with hardware HEVC. Where it cannot, the page says so; record in "Most Compatible" or convert the clip first.
Built and maintained by Saad Naeem
AI engineer, Doha · Updated