Chroma Key for Webcam Overlay - Green Screen Recorder

What is Chroma key?

Chroma key is a visual effects technique for layering two video streams together. The most common example of Chroma Key is the weather news. The weatherman is not actually standing in front of weather map, he is actually standing in front of a blue or green screen. The blue or green background is digitally removed and replaced with the image of a weather map.

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How to use Chroma key with Screen/Game Recording Software

We used to combine two videos into one video with the chroma key feature of video editing software such as Adobe Premiere or Sony Vegas. Nowadays, if you have a screen recording program and webcam, you can simply make a chroma key video in real-time while recording your computer screen.

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* Steps to Using Real-Time Chroma key

These steps will teach you how to use chroma key with screen recording software.

Step 1: Download screen recording software which supports Chroma Key.

- Click here to download the free version of Bandicam.

Step 2: Go to the Webcam tab and check the "Add webcam overlay to video" option.

- Start Bandicam, click the 'Settings' button under the 'Video' tab and check the 'Add webcam overlay to video'" option under the 'Webcam' tab.
- Check the 'Preview webcam on screen' option.

Step 3: Check the "Use Chroma Key" option and click the webcam background.

- Click the [Select] button and click the background of the video in the preview screen and set the "Similarity", "Blend" to adjust the spectrum of colors.

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Step 4: Once you start recording, you will see your face in the recording video.

* Usage example 1) PowerPoint presentation - eLearning Video (PiP)

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* Usage example 2) Gameplay videos with facecam using chroma key

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* Essential Tips and FAQs for Chroma Key

1. I can't remove the background of a webcam.

To remove a background of a webcam, you should record in front of a blue or green background. It is the best way to make a transparent background. (You can purchase a Chromakey Green Screen Kit from,, etc.)
Please also adjust the "Similarity" and "Blend" option to make a perfect transparent background.

2. I can't use the Chroma Key and webcam overlay function.

- Bandicam 4.2.1 or a higher version supports the real-time Chroma Key function.
- If you use a USB webcam/capture device, please plug the device into a USB 3.0 slot.
- Please disable/uninstall other webcam programs, install a suitable device driver and select another video size at the 'Format' menu under the 'Webcam preview and advanced settings' window.

If you still have a problem with the Chroma Key feature of Bandicam, please email us at with your webcam model and a screenshot.