A free green screen video maker that puts flat chroma key green behind a person in any video, in your browser, with nothing uploaded.
5.0(1 rating)Drop a video of a person to put a green screen behind them, with no green screen in your room. It all happens in this browser.
Your video
My AI Creator Summit 2026 session, run through this tool. Switch between the looks and drag the divider to compare. The office photo is by Katrin Bolovtsova on Pexels.
New background
An MP4 video on this color. Green screen is for editors that key it out.
Remove the background
Clean edges that keep you whole, at a good speed. Right for most videos.
Everything happens in this browser, so your video never leaves your computer. An AI model finds the person in every frame, each frame is checked against the next so the edges don't flicker, and the result keeps your video's own size, up to 4K.
This free tool puts a green screen behind a person in any video, in your browser, with no green screen in your room.
It cuts you out of every frame and fills the rest with flat chroma key green. Nothing is uploaded.
Here's what a green screen video is, when to pick it over see-through, and what it still gets wrong.
What is a green screen video?
A green screen video is a video of you on flat green, so an editor can swap the green for anything.
Filmmakers shoot in front of a green sheet for this. This tool makes the same video from any footage, by finding you in every frame.
Why a green screen and not see-through
A see-through video is the cleanest way to put yourself over something else. Not every app can open one, but every video editor has a chroma key for green.
Pick the one that fits your editor:
| You need | Pick |
|---|---|
| An editor that opens see-through WebM | See-through, with the transparent video maker |
| Any editor or app with a chroma key | Green screen |
| Your own room, softened | Blur, with the blur video background tool |
The green is #00B140, a flat chroma key green, the same in every pixel, so a key has nothing to guess about. You can pick any other color too.
Formats, sizes and length
You can drop MP4, MOV and WebM videos that your browser can play. The new video keeps your video's size, up to 4K, and a bigger video comes out at 4K.
Each video can be up to 5 minutes. For a longer one, you pick a start and an end, and you can do the next part after.
How it works
It runs in your browser, one frame at a time:
| Step | What happens |
|---|---|
| Find the person | An AI model made for people on video marks the person in every frame |
| Stop the flicker | Each frame is checked against the one after it, so an edge that flips for one frame is put back |
| Full size | The cutout is fitted to every pixel of the frame, along the frame's own edges, up to 4K |
| Clean colors | The old background's tint comes out of the edges, so hair doesn't carry your wall onto the new background |
| New video | The frames and the sound go into a new MP4, or a WebM when it's see-through |
The first time, your browser downloads the AI model once, 88 MB, and keeps it. It runs on your graphics chip where your browser allows it.
What it still gets wrong
It's made for people on camera: talking heads, presenters and creators. A product, a pet or a car won't come out cleanly, and for a photo of one there's the image background remover.
Green clothes key out along with the background, so pick a color you're not wearing.
Who is the green screen video maker for?
It's for anyone putting themselves over other footage:
- Video caption generator – creators adding captions after the key
- Video resizer – anyone reframing it for Reels, Shorts or TikTok
- Presentation generator – speakers putting themselves over their slides
- YouTube thumbnail downloader – creators studying how others frame themselves
It works in your browser, so your footage never leaves your computer.
More free video background tools
Here are the other ways to change your video's background, all in your browser:
- Video background remover – blur, change or remove it, at full size
- Blur video background – a soft blur, or bokeh like a real lens
- Transparent video maker – a see-through WebM to put over anything
Each one keeps your sound, and none add a watermark.
Edit your video
Design with
Write the script and captions with AI
Green screen video maker FAQs
Questions about the green screen video maker? Here's what to know.
A video of you on flat green, so an editor can swap the green for anything.
This tool makes one from any video, with no green screen in your room.
Drop your video here, keep Green screen, and click Remove the background.
Then download the MP4 and key out the green in your editor.
#00B140, a flat chroma key green, the same in every pixel.
You can pick any other color too.
Green clothes key out along with the background.
Pick a color you're not wearing, like blue, and key that instead.
Up to 5 minutes at a time, up to 4K.
For a longer video, you pick a start and an end, and you can do the next part after.
Yes, Keep the sound is on unless you turn it off.
Yes, it's free, with no account and no watermark.
It runs in your browser, so it costs nothing to run.
No, the green screen video maker works in your browser.
Your video never leaves your computer.
I did.
I'm Navid Moazzez, and the green screen video maker is one of my free tools on navid.me.
Read more about me.
Navid Moazzez
AI business strategist & AI OS builder
Navid Moazzez helps creators and founders master AI and build their own AI Operating System (AI OS) to automate their business and life.
Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.
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