Greenscreen Background Static Static Greenscreen Backgrounds are inserted behind the subject in the photo/video/GIF content. The Greenscreen Background is combined with the Overlay to create the final immersive effect. Most Static Greenscreen Background images include scenery or a repeating pattern - images featuring a large amount of text or other key points of focus may be obscured. SQUARE Dimensions: 1200 x 1200px File Format: JPG, PNG Colour Mode: RGB VERTICAL Dimensions: 1200 x 1800px File Format: JPG, PNG Colour Mode: RGB HORIZONTAL Dimensions: 1800 x 1200px File Format: JPG, PNG Colour Mode: RGB