When filming using a greenscreen it is quite an easy process that people use a lot in filming, adverts and much more media of that sort, doing this usually make the video more appealing to you and the effects to the video. But before you add the visual effect or anything of that sort the green screen should be properly removed. I will be using adobe after effects as it has proper tools to easily remove the green screen and can clean up any noise.
The credit for development of the bluescreen is given to Larry Butler, who won the Academy Award for special effects for The Thief of Bagdad. He had invented the blue screen and travelling matte technique in order to achieve the visual effects which were unprecedented in 1940. Blue screens are used in place of green screens because it’s generally easier to chroma-key. The colour is softer than in a green screen. However, green screens are still more commonly used because of multiple reasons. One of them being the fact that some people like to wear blue clothing.
How I used the Keylight plugin for after effects:
Click on the green screen video you have to make it active in Adobe After Effects. Click on “Effect,” “Keying” and “Keylight.” This plug-in effect for Adobe After Effects that automatically comes with the software. Click on the Effect Controls tab. Then you should select the “Eye dropper” icon next to the Screen Color option. Click on a section of the green screen towards the middle of your video. Click on “View” and select “Status.” Here you can see any parts of the green screen that were not removed. These areas will appear white and gray around the object. Increase the Screen Grain until the outer edges of gray and white disappear and you see just the shape of the object.
This is how to use the colour key effect:
First, you should Click on the video layer to activate it. Go to “Effect,” “Keying” and select “Color Key.” Click on the Effect Controls tab in the top left of the software. Scroll down until you find the Color Key Effect. Click on the eyedropper tool next to the Colour option. Click on the green screen in the Composition Window. Most of the green will disappear. Move the Color Tolerance slider and adjust to remove similar shades of green or darker areas that were cast from shadows and lighting. Adjust the Edge Feather option so that the objects in front of the green screen will blend into the background without rough or glowing edges. Play a preview of the video to ensure that the green screen does not appear throughout the complete timeline. Adjust the Edge Feather and Color Tolerance as needed.