I woud like to learn how to add a green screen to a cell phone/laptop. There are hundreds of YouTube videos that show how to key out and track a green screen onto a cell phone/laptop, but I am unable to find any videos to show how the green screen is first placed on the cell phone/laptop. If anyone has any beginner videos for me to follow, please. advise. Thank you.
There are apps you can download that will display a solid color on your screen, or you can also go low-tech and use a green piece of paper.
That said, I generally find you end up with better composites by actually leaving the phone off, or using a plain white screen (depending on the material you'll be comping into the screen later), so you end up with the proper screen reflections or edge glow, as appropriate.