Virtual backgrounds
Film yourself against a green screen and replace the background with any image or video — virtual office, travel destination, or branded backdrop.
Green Screen Compositing
Green screen compositing(or blue, or red).
KineMaster's Chroma Key tool removes a selected color from video clips and images. Use the eyedropper to pick the color to remove, then fine-tune the mask edging for a clean, professional composite.
What it does
Color-based removal for videos and images
Chroma Key works by detecting and removing a specific color (it works best with extremely saturated red, blue, or green) from a video clip or image. Select the Key Color with the eyedropper to sample the color, adjust the Foreground and Background threshold to control how wide the color selection is, and use Detail Curve to smooth the boundary between subject and new background.
- Works best on footage with highly saturated colors
- Key Color
- Foreground and Background threshold controls
- Detail Curve
How to use
How to use Chroma Key in KineMaster
Five steps from green screen footage to clean composite using Key Color, Foreground and Background threshold adjustments, and the Detail Curve.
- Step 1
Add footage as a layer
Add media with your green screen footage as a layer on the Timeline. The background must be a separate layer below it.
- Step 2
Select Chroma Key
Tap the green screen layer to select it. Then, tap Chroma Key in the Tool Panel.
- Step 3
Tap Enable
Tap Enable. The Chroma Key tool will automatically select the color to be knocked out. You can change the color with the Key Color Color Picker.
- Step 4
Adjust Threshold
Adjust the Foreground and Background threshold sliders to widen or narrow the range of color being removed.
- Step 5
Feather the edges
Use the Detail Curve to soften or sharpen the edge between your subject and the new background.
Use cases
Three ways creators use Chroma Key
Virtual backgrounds, VFX compositing, and product overlays — one precise tool, multiple uses.
VFX
Composite actors or objects shot against green screen into CGI or real-world environments for YouTube skits, music videos, or short film productions.
Product and presentation overlays
Remove a plain colored background from product footage or presentation slides and composite them over live video for polished explainer or demo content.
FAQ
Frequently asked questions
Quick answers about Chroma Key compatibility, settings, and how it differs from Magic Remover.
Does Chroma Key work on blue screens as well as green screen?
Yes. You can use the Key Color Color Picker to sample any background color, including blue screen. Chroma Key works best with highly saturated reds, blues, and greens.
What is the difference between Chroma Key and Magic Remover?
Chroma Key removes a specific sampled color. Magic Remover uses AI to detect and remove content that isn't identified as a person from any footage — no green screen needed. Choose Chroma Key for controlled studio shoots, Magic Remover for footage with people.
How do I get the best Chroma Key result?
Even, wrinkle-free green or blue screen cloth as a backdrop is ideal. Avoid shadows and green spill on your subject by using both a bounce and a fill light and by keeping your subject as far from the backdrop as possible.
Can I apply Chroma Key and Magic Remover to the same clip?
No. Chroma Key and Magic Remover cannot be applied to the same clip at the same time.
Can I keyframe Chroma Key parameters?
No. Chroma Key cannot be key framed like other Effect parameters.
Related features
Pair Chroma Key with these tools
Combine Chroma Key with other KineMaster features for a complete compositing workflow.
Green screen compositing — on any phone,free.
Download KineMaster free on iOS and Android.
