How to use the green screen remover
- Open your clip. Drop an MP4, MOV, WebM or MKV file shot on a green or blue screen. It stays on your computer.
- Set the key color. Green is selected by default. If your screen is a different shade, click Pick from video and then click on the screen in the frame.
- Tune Tolerance. Raise it until all of the screen, including darker folds and corners, is gone.
- Tune Softness. Softness controls the transition at the edges. Lower it if the subject looks semi-transparent; raise it for smoother hair and motion blur.
- Clean the edges. Keep Remove color spill on, then use Shrink / expand to trim any thin green outline.
- Export. Choose None for a transparent WebM, or a color, image or blurred background for an MP4, then download.
What makes a clean green screen key
A chroma key looks at the color of every pixel and removes the ones close to the screen color. The more evenly the screen is lit, the more the green pixels look alike, and the cleaner the key. Most problems come from the shoot, not the software:
- Light the screen separately from the subject. Two soft lights on the screen remove the hot spots and shadows that make parts of it look darker.
- Keep distance. A meter or two between subject and screen stops their shadow landing on it and reduces green spill on their back and hair.
- Avoid green clothing and shiny green objects; anything close to the screen color will be keyed out too.
- Iron or stretch the fabric. Wrinkles create darker stripes that need a higher tolerance.
- Use a higher shutter speed for fast movement. Motion blur mixes the subject with the screen and creates soft, semi-transparent edges.
Green screen settings explained
| Setting | What it does | When to change it |
|---|---|---|
| Key color | The color that becomes transparent | Use the eyedropper if your screen is not standard green, or for blue screens |
| Tolerance | How far from the key color a pixel can be and still be removed | Raise for uneven or shadowed screens; lower if parts of the subject disappear |
| Softness | Width of the gradual edge between removed and kept pixels | Raise for hair and motion blur; lower if the subject looks see-through |
| Remove color spill | Neutralizes green reflected onto the subject | Keep on for green screens; turn off if it dulls genuine green details |
| Shrink / expand | Pulls the edge of the subject in or pushes it out | Shrink to remove a fringe; expand if fine edges are cut off |
| Feather | Blurs the edge of the mask | Add a little when the edge looks too sharp on the new background |
Green screen remover without a green screen
If you shot against a wall, a messy room or an uneven backdrop, a color key cannot separate the subject. Switch the Method to AI cutout: it recognizes people instead of colors, so it works on ordinary footage too. The same AI mode can rescue a badly lit green screen where shadows and wrinkles make the color key fail. For more on the AI mode, see the main video background remover.
Export formats for keyed footage
Transparent WebM
Keep Background on None. The export is a WebM file with VP9 video and an alpha channel. It keeps its transparency in Chrome, Edge, Firefox, OBS and in web pages. The transparent video maker page lists where it can be used.
MP4 with a new background
Pick Color, Image or Blur to bake a new background into an H.264 MP4 that plays everywhere. For more control over the replacement, use the chroma key page, which starts with an image background.
Keep the sound
The original audio track is copied into the new file by default. Untick Keep audio for a silent clip.
Why remove a green screen in the browser
Desktop editors can key green screens, but they are large downloads and take time to learn. Online keyers are simpler but upload your footage and often add watermarks or cap the resolution. This green screen remover runs locally: the file never leaves your device, export is full resolution and free, and the preview updates as you move each slider, so you can see exactly what each setting does before you export.
It is a good fit for quick jobs: a presenter clip for a course, a reaction video, a stream overlay, a product demo shot on a green table or a meme clip with a green background downloaded from the web.