Remove Green Screen in DaVinci Resolve 20

Most people open Resolve, click the eyedropper and expect a perfect cutout. Sometimes it works. More often the result has green fringes, see-through patches or flickering edges.

The fix isn't one magic slider. It is a sequence: prepare good footage, pull a rough key, clean the matte, remove the green spill and then blend the subject into the new background. Each step is small, but together they separate a rough key from a professional one.

This guide walks through that sequence in DaVinci Resolve 20 with plain explanations of each control. If you want a quicker, browser-based option instead, our online green screen remover and guide to removing green screen from video online for free cover that route.

Which Keying Method Should You Use in Resolve 20?

Resolve offers several ways to pull a key. Pick based on your footage and how much control you need.

Before You Key: Footage Checklist

A great key starts before you open Resolve. Check these first.

1. Even Lighting on the Screen

Wrinkles, hot spots and dark corners make the screen several shades of green. The more even the screen, the cleaner the key.

2. Separation Between Subject and Screen

A subject standing a meter or two in front of the screen picks up less green light than one standing close to it.

3. No Green in the Subject

Green clothing, props or reflections will become transparent. That is why plastic and glass objects are tricky.

4. Good Source Quality

Heavily compressed footage often has blocky color information, which makes edges noisy. If you can choose, shoot at a higher bit depth and with less compression. If you can't, don't worry: you can still get a usable key, but expect more cleanup.

5. Shot Without Motion Blur Problems

Fast hand movements smear the edge between subject and background. If motion blur is heavy, keep your expectations realistic around fingers and fast gestures.

Quick Pre-Key Checklist

• [ ] Screen is reasonably even
• [ ] Subject is separated from the screen
• [ ] No green clothing or props
• [ ] You know your replacement background
• [ ] You have a spare frame of the empty screen (useful for a clean plate)

If your problem is color spill rather than the key itself, our guide to fixing green screen spill without Photoshop explains how spill happens and how to reduce it.

Method 1: Remove a Green Screen With the Delta Keyer in Fusion

This is the main workflow. It gives the best control and teaches you how Fusion thinks.

Step 1: Open the Fusion Page

Place your green screen clip on the timeline.

Click the clip.

Open the Fusion page by clicking its button or pressing Shift + 5.

Blackmagic's guide describes this as the step that brings a single shot into the Fusion page where you can apply effects. You will see a MediaIn node connected to a MediaOut node.

Practical tip: If you plan to key several clips, key one clip first and copy the node setup to the others later.

Step 2: Add the Delta Keyer

You have two common ways:

• Drag Delta Keyer from the Effects Library onto the line between MediaIn and MediaOut.
• Or right-click an empty space in the node editor, choose Add Tool > Matte > Delta Keyer.

The Delta Keyer should now sit between MediaIn and MediaOut. Click it to load its controls in the Inspector.

Step 3: Sample the Green Screen Color

Select the Delta Keyer node.

In the Inspector, find the eyedropper for the background color.

Drag the eyedropper over a typical green area of your viewer.

Release on a representative spot, not a hot spot or a dark corner.

You should see the background disappear and a checkerboard or black background appear, depending on your viewer settings.

Tip: If the key looks poor, sample again from a different point. Sampling one slightly different shade of green can change the whole key.

Step 4: Add a Merge Node and a New Background

Now put something behind your subject.

Add your replacement background image or video to the Fusion page, or bring it in from the Media Pool.

Add a Merge node. The Merge node layers one image over another.

Connect your background image to the Merge's background input.

Connect the Delta Keyer output to the Merge's foreground input.

Connect the Merge output to MediaOut.

Merge inputs are color-coded. The background input is the larger colored one (orange in current versions, yellow in older ones, depending on the version), and the foreground input is green. If the result looks wrong, check that you haven't swapped the inputs.

Blackmagic's guide also describes dragging the Delta Keyer onto the line between the green screen clip and the Merge node's foreground input as a quick way to wire it up.

Step 5: Check the Matte, Not Just the Picture

Don't judge the key only by how the final image looks. Look at the alpha channel (the matte) in the viewer.

• White means opaque (the subject).
• Black means transparent (the removed background).
• Gray means partial transparency (soft edges, hair, motion blur).

Switch the viewer to show the alpha channel using the viewer's channel controls. A good matte has a solid white subject, a clean black background and soft gray only along real soft edges.

Step 6: Refine the Key

Work in a logical order. A diagnostic approach, which one Resolve educator describes as sampling the screen, evening it out with Pre-Matte or a Clean Plate, inspecting the alpha, applying masks, suppressing spill and only then using Tuning, keeps you from fighting the controls.

Step 7: Return to the Edit Page

Click the Edit page button. Your clip now shows the keyed result over your background. Play it back at full speed to check for flicker.

Using a Clean Plate for Hair, Smoke and Reflections

A clean plate is a version of the background without the subject. It helps the Delta Keyer understand exactly what the screen should look like.

Blackmagic's visual effects guide includes a lesson on creating a clean plate and describes it as especially useful for details such as hair and reflections.

When You Need One

• The screen has uneven lighting or wrinkles.
• Fine hair or fur needs to stay natural.
• There are reflections, smoke or semi-transparent objects.

How It Works in Practice

Add a Clean Plate node and feed it your green screen footage. It builds a clean version of the screen, using frames or areas without the subject.

Connect the Clean Plate output to the Delta Keyer's Clean Plate input (the purple one in many tutorials).

Re-check the alpha channel. Edges and background irregularities should look smoother.

The exact setup for the Clean Plate node can vary with the footage and the version of Resolve, so follow Blackmagic's visual effects guide for step-by-step lessons.

Shortcut if you shot a spare frame: If you recorded a few seconds of the empty screen under the same lighting, that footage makes an excellent clean plate source.

Cleaning the Matte With Garbage and Solid Mattes

Sometimes the screen doesn't fill the whole frame. Lights, stands or the edge of the backdrop appear in the corners. A garbage matte removes those areas without touching your key.

Garbage Matte

Add a Polygon or B-Spline mask.

Draw a loose shape around your subject and the keyed area, leaving the edges you want removed outside it.

Connect the mask to the Delta Keyer's Garbage Matte input.

Everything outside your mask becomes transparent, so you don't have to rely on the key to remove it.

Solid Matte

A solid matte does the opposite: it protects part of your subject from the key. Draw a mask inside the subject, connect it to the Solid Matte input and holes in the middle of your subject fill in.

Effect Mask

The Effect Mask input limits where the whole keying effect applies. Use it when you only want to key part of the frame.

Tip: Animate your masks if the subject moves. A loose, soft mask that follows the subject is better than a tight mask that cuts into hair or hands.

Remove Green Spill and Fix Green Edges

Spill is green light bouncing from the screen onto your subject. You'll see it as a green tint on skin, hair edges or shoulders.

Quick Fixes

• Use the Fringe and Replace controls in the Delta Keyer to neutralize the green around edges.
• Reduce the effect gradually. Too much can make skin look gray or magenta.
• If green remains on hair, try a slightly tighter matte and then soften the edge.

When Spill Is Heavy

Create a separate color correction on the subject only. Reduce green in the affected tones, and compare it against skin color on a reference frame.

The Easy Test

Place your subject over a neutral gray or black background while you refine spill. Green fringes are far easier to see against gray than against your final colorful background.

Blend the Subject Into the New Background

A clean key can still look fake if the lighting and color don't match. These steps make the composite believable.

Match brightness and contrast. Use a color correction node on the subject, or adjust it later on the Color page.

Match color temperature. A warm sunset background needs a warmer subject.

Add a subtle edge softness. A very sharp key looks cut out. Soften the matte edge slightly.

Match sharpness. If the background is soft and the subject is razor-sharp, the shot feels pasted.

Add light wrap. A subtle blur of the background light around the subject's edges makes the two feel like one scene.

Add a shadow if needed. If the subject should cast a shadow on the ground, create one deliberately. For still-image shadow cleanup, see our guide on removing shadows from photos.

Method 2: The 3D Keyer on the Edit Page (Fast and Simple)

If you only need a quick key on clean footage, you can skip Fusion.

Open the Effects Library on the Edit page.

Find the 3D Keyer (in the OpenFX or Resolve FX Key section, depending on your version).

Drag it onto your green screen clip.

In the Inspector, use the eyedropper to click the green background.

Adjust the controls until the green disappears.

Place your background clip on the track below the keyed clip.

Good for: quick social clips and simple screens.

Not good for: fine hair detail, heavy spill or uneven lighting. For those, use the Delta Keyer.

Method 3: Color Page Qualifier and Other Options

The Color page has qualifiers that select colors for grading. Some editors use them to isolate green and then key. This works, but it is less specialized than the Delta Keyer for green screen compositing, so we recommend Fusion or the 3D Keyer first.

For shots without a green screen at all, Resolve offers AI-assisted tools such as Magic Mask. Availability can depend on your edition (Free or Studio) and version, so check Blackmagic's current feature comparison before you plan a project around it.

If you want a different tool altogether, see our guides on green screen removal in CapCut and chroma key in After Effects. Our best free green screen remover online compares simpler browser tools.

Export Your Finished Video (and Transparent Footage)

Standard Export

Go to the Deliver page.

Choose a preset (such as H.264 for web or ProRes for editing).

Set the filename and location.

Click Add to Render Queue, then Render All.

Exporting With Transparency

If you want to export the keyed subject with a transparent background:

• Use a format and codec that supports an alpha channel, such as ProRes 4444 in a QuickTime container.
• Check the advanced settings for an option to export the alpha channel.
• Don't assume every codec supports transparency. Blackmagic documents supported codecs for each Resolve version, so check them before you export.

For still images with transparency, our guides on making an image transparent online, turning a photo into a transparent PNG and JPEG vs PNG explain which format to pick.

Free vs Studio: What You Should Verify

DaVinci Resolve comes in a free edition and a paid Studio edition. Features, codecs and AI tools can differ between them, and they can change between versions. Before you promise a client a particular workflow:

• Check Blackmagic's current feature comparison.
• Confirm export codecs and hardware requirements.
• Test your key on a short clip first.

We don't state which feature is Studio-only here, because that can change. The safest approach is to confirm on Blackmagic's site.

When to Use Resolve and When to Use a Simpler Tool

Related tools and guides:

• AI background remover for images
• Transparent image maker
• Best background remover tools in 2026
• Batch background removal
• Remove background in HD without pixelation
• Photoshop vs RemoverHub for transparent images
• Photo background transparent guide

After You Key: Cleaning Up the Rest of the Frame

Keying removes the background but not every distraction. You might still want to remove a stray logo, a caption or a person who walked into frame.

• Remove text from video
• Remove words from video
• Remove a logo from video without blurring
• Remove a QR code from video
• AI video object removal

For stills pulled from your video, the AI object remover can help.

A 10-Minute Green Screen Workflow You Can Copy

Import your clip and background.

Place the clip on the timeline and open the Fusion page.

Add a Delta Keyer and sample the green.

Check the alpha channel.

Add a garbage matte for edges and rigging.

Add a solid matte if the subject has holes.

Refine fringe and spill.

Add a Merge and connect the background.

Match color, softness and light.

Return to Edit, play back at full speed and export.

Real-World Examples

These are illustrative scenarios, not real clients.

Example 1: The YouTuber With a Wrinkled Screen

Hamza filmed talking-head videos against a cheap fabric screen. The key kept breaking on wrinkled areas. He used a garbage matte to cut the edges, a clean plate from a spare clip and a light Pre-Matte adjustment. The key became stable across the whole video.

Lesson: A clean plate and good masks fix uneven screens better than endless slider tweaking.

Example 2: The Wedding Videographer

Sana had a bride with fine wispy hair against a green backdrop. A tight key made the hair look crunchy. She loosened the matte, used a clean plate and added a subtle edge softness. The hair kept its natural look.

Lesson: Hair needs a soft edge, not a hard one.

Example 3: The Online Course Creator

Ali recorded lessons in a home office. His key looked fine, but he looked pasted onto his slides. He matched the color temperature and added a subtle blur to the edge. The composite finally felt natural.

Lesson: Blending matters as much as the key.

Example 4: The Small Business Owner

Hira made product demo videos on a green screen. She used the 3D Keyer on the Edit page because her footage was even and clean. It took her minutes, not hours.

Lesson: Use the simplest method that gives a good result.

Common Mistakes to Avoid

Judging the key only by the final picture. Always check the alpha channel.

Sampling a hot spot. Sample a typical green area.

Over-tightening the matte. It makes hair and edges look cut out.

Ignoring spill. Green on skin gives away a composite.

Skipping garbage mattes. They save a lot of keying effort.

Not matching light and color. The subject looks pasted on.

Keying heavily compressed footage and expecting perfection. Expect extra cleanup.

Assuming every export format supports transparency. Check codec support.

Following a tutorial for another version blindly. Menus change between versions.

Why Choose RemoverHub for Video and Image Cleanup?

Keying is one step in a longer editing workflow. You may also need to clean a still frame, remove an object or sharpen the result.

Why choose RemoverHub:

• Cleanup tools in one place. Browse the full tools library, including the green screen remover, AI object remover and logo remover.
• Guides built from testing. Our blog library covers video, image, background and watermark cleanup in plain language.
• Honest limits. We tell you when a manual Resolve workflow will beat a one-click tool.

Frequently Asked Questions

How do I remove a green screen in DaVinci Resolve 20?

Open the Fusion page, add a Delta Keyer, sample the green with the eyedropper, refine the matte and spill, then merge the keyed clip over your new background. For a quick key on clean footage, use the 3D Keyer on the Edit page.

Which tool removes a green screen in DaVinci Resolve?

The Delta Keyer on the Fusion page is the main professional tool. The Chroma Keyer (Fusion) and 3D Keyer (Edit page) are simpler alternatives.

What is the easiest way to key out green in Resolve?

The 3D Keyer on the Edit page. Drag it onto the clip, click the green with the eyedropper and adjust until the green disappears.

How do I use the Delta Keyer?

Add it between MediaIn and MediaOut, sample the green in the Inspector and refine Pre-Matte, Matte, Fringe and Replace controls while viewing the alpha channel. Connect it to a Merge node over your background.

How can I replace a green screen with another video?

Add a Merge node on the Fusion page. Connect your new background to the Merge's background input and the keyed clip to its foreground input. You can also place the background on a lower track on the Edit page after using the 3D Keyer.

How do I fix green edges around my subject?

Adjust the Fringe and Replace controls on the Delta Keyer, and soften the matte slightly. Check the result over a gray background so green is easy to see.

How do I remove green spill from my subject?

Use the Delta Keyer's spill-related controls, and add a color correction on the subject if needed. Reduce gradually so skin tones don't turn gray or magenta.

Why does my green screen look transparent in Resolve?

Your subject may contain green, or the matte may be too aggressive. Use a solid matte to protect the subject, and loosen the matte controls. Also check that you're viewing the Merge or MediaOut node.

Can I remove a green screen in the free version of Resolve?

Resolve's free edition includes a Fusion page with keying tools, but feature availability can change between versions and editions. Check Blackmagic's current feature comparison before relying on a specific tool.

How do I export transparent footage from Resolve?

Use a codec and container that support an alpha channel, such as ProRes 4444 in QuickTime, and enable the alpha export option in the Deliver page's advanced settings. Verify codec support in Blackmagic's documentation.

Should I use the Fusion page or the Color page?

Use Fusion's Delta Keyer for green screen compositing. The Color page is better for grading and color-based selections.

Conclusion:

Removing a green screen in DaVinci Resolve 20 is a repeatable process. Prepare good footage, pull a key with the Delta Keyer, check the alpha channel, clean up with masks and spill controls and then blend the subject into the new background.

If you want a faster route for simple jobs, book a seat at Advance Free Tools offered by RemoverHub, then try the green screen remover and explore the full toolkit.