Does it work with a blue screen?

Yes. Set the Key Color to the blue of your backdrop instead.

Why does my subject have a green edge?

That is green spill from the backdrop. Raise or lower Tolerance a little, and light your subject further from the screen next time.

Video Editor Intermediate 4 min read Updated Oct 23, 2026 Pluto Photos 2.5.2

How to Remove a Green Screen Background (Chroma Key)

Short answer

Select the clip, open the Effects tab, find Green Screen, set the Key Color to your backdrop and click Enable. Drag Tolerance until the background disappears and the edges stay clean.

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#1. Add the green screen clip to the timeline

Trim and Add the clip as in how to trim a video. This test clip shows a person walking in front of a green backdrop covered with tracking markers.

The preview with a green screen clip: a person in a green suit walking at the left edge of a green studio with white tracking marks — The green screen clip.

#2. Open the Effects tab and find Green Screen

Select the clip, open the Effects tab and scroll down to Green Screen. It has a Key Color swatch and an Enable button.

The Color Grade, Color Lookup LUT and Green Screen sections, with the Green Screen Key Color swatch and Enable button — The Green Screen section.

#3. Set the key color and click Enable

Click the Key Color swatch and choose the color of your backdrop. The default is a pure bright green, but a real studio wall is usually a duller green, so pick the actual shade. Then click Enable. A Clear button and a Tolerance slider (30% to start) appear.

#4. Adjust Tolerance

Drag Tolerance up until the whole backdrop is gone (45% here), but not so far that parts of your subject disappear. The preview shows the keyed clip live with the background removed. Only pixels that aren't the key color remain, and here that's just the white tracking marks.

The preview with the green backdrop removed, leaving black with only the white tracking marks — The backdrop is keyed out. Only the tracking marks remain.

#Tips

Light the screen evenly. Shadows and wrinkles in the backdrop make a patchy key, and no tolerance setting fully fixes that.
Keep the subject away from green clothes and away from the screen itself, to avoid green spill on the edges.
Put the new background on a lower track. A picture-in-picture layer or another clip beneath your keyed one works.
Clear removes the key.

#Questions

Does it work with a blue screen?: Yes. Set the Key Color to the blue of your backdrop instead.
Why does my subject have a green edge?: That is green spill from the backdrop. Raise or lower Tolerance a little, and light your subject further from the screen next time.

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