This method requires you have a solid-colored screen, curtain, or wall behind you, which Zoom will replace the selected color with the image or video you selected. Virtual Background with a green screen provides the best virtual background effect and uses less system resources during the meeting. Prerequisites for video conferencing virtual backgrounds You can also use Virtual Background in a Zoom Room, or a simpler Mask Background feature in the web client. Lastly, if you don't have your own images or videos for use as a virtual background, you can use nothing and just blur the background instead.
Just as with a virtual background without a green screen, a video virtual background requires more system resources, and thus has higher system requirements. Additionally, instead of a static image, the virtual background feature, with or without a green screen, allows you to select short videos as your virtual background.