hi

get a green screen

Hey @Suhail_929, it may be the sizing of the original file of the virtual background you're trying to use. Here is some info from the KB article, Changing your Virtual Background image

• There are no size restrictions when adding your own virtual backgrounds, but we recommend cropping the image to match the aspect ratio of your camera before uploading it.
  Example: If your camera is set to 16:9, an image of 1280 by 720 pixels or 1920 by 1080 pixels would work well.
• If you're not sure about your camera aspect ratio, use a background image with a minimum resolution of 1280 by 720 pixels.
• Browse some of the virtual backgrounds Zoom has collected, or use these sources for other royalty-free images: Pexels, Unsplash, Pixabay.

You have to clean it