title: How to remove green background of a video, making it transparent?
body: <p>I have a <a href="https://youtu.be/-XfHJ57XIb4" rel="nofollow noreferrer">video</a> with a green background. I want to remove this green section (<a href="https://wikipedia.org/wiki/Chroma_key" rel="nofollow noreferrer">Chroma key</a>), making it transparent, and then display the video over the website background.</p>
  <p>I can only find complex code that uses images.</p>