Removing a green screen background, also known as chroma keying, is a common technique in video editing.To achieve this, you'll need a video editing software that supports chroma keying. Adobe Premiere Pro, Final Cut Pro, DaVinci Resolve, Capcut, VN Editor, Kinemaster, Inshot are examples of such software. Here's a general guide using Adobe Premiere Pro as an example:

​

1. Import Your Footage:

   • Open your video editing software.

   • Import the video footage that has been shot in front of a green screen.

2. Place Your Footage on the Timeline:

   • Drag and drop your footage onto the timeline.

3. Apply the Chroma Key Effect:

   • Locate the Effects panel and search for the chroma key effect (often called "Ultra Key" in Adobe Premiere Pro).

   • Drag the effect onto your video clip on the timeline.

4. Select the Key Color:

   • In the Effects Control panel, you'll find the Ultra Key settings.

   • Use the color picker to select the green color in your footage. This will usually be a shade of green that is close to the one used in your green screen.

5. Adjust Settings:

   • Tweak settings like tolerance, pedestal, and other parameters to refine the keying effect.

   • You may need to adjust these settings based on the lighting conditions during filming.

6. Fine-Tune Matte Settings:

   • Some software allows you to fine-tune the matte or mask settings to improve the edge details and overall keying.

7. Add a New Background:

   • Once the green screen is removed, you can add a new background.

   • Drag a background image or video onto a lower track in the timeline, below your keyed footage.

8. Adjust Timing and Position:

   • Ensure the new background aligns with your footage, adjusting timing and position if necessary.

9. Preview and Export:

   • Preview the video to make sure the keying looks good.

   • When satisfied, export your video with the new background.

​

Remember that the process may vary slightly depending on the software you are using.