Green screen video: What you need to know about green screen video
What is a green screen?
Learn more about the green screenvideoBefore the world, we will explain their use. Many different video applications use green screens to remove the background of the scene. In this process, the green background will be replaced by different videos or images, leaving a new replacement for the subjectChange the background。 This method is not limited to Hollywood feature films and high budget production, but is widely used in the video production and live broadcast of public and private enterprises. This approach is a truly accessible special effect that allows anyone to produce high-quality video content.
Enterprises use the power of video to attract customers, employees, partners and shareholders. Green screen solutions help create and deliver communications more creatively and effectively, enabling businesses to produce content without having to hire sites, equipment, or operators. It produces eye-catching content through video mixing, picture in picture, graphics, tiling, virtual scenes, etc.
Green screen terms
Green screen
This term summarizes post production techniques for removing color backgrounds from video, making them transparent so they can be replaced. Literally, it also describes the green background used in video production. The background used in the shooting process is the single color farthest from the skin color. Bright, highly saturated green is the most common color – hence the name “green screen”. Another option is a highly saturated blue or “blue screen”.
Chroma key
The chroma key describes how two video clipssynthesisFor one technology. It is based on their specific color, hue, or chroma.
Keying
Matting defines the process of removing chroma (color) from video. In this case, it is easiest to distinguish from other more subtle green colors by removing the bright green that forms a contrast with the skin color. Edit the numeric value of the suite and visual mixer selection color to make it completely transparent. This process is called matting the green screen, and then replacing it with any other background you choose to display. sprinkle
Overflow describes the negative result when colored light is reflected from the green screen and appears at the edge of the object. When the green screen is keyed, the overflow will make the edge details in post production difficult to repair – try to avoid this at all costs.
How to achieve the perfect chroma key for green screen video
It only takes a few simple steps to get the perfect chroma. Select the correct screen color to use. Illuminate the green screen correctly and evenly. Separate the subject from the background by distance or light to avoid overflow. Take advantage of the editing suite or visual mixer software. The planning process you should use
When planning a green screen video, choose the correct color to use based on the color associated with the theme. The green screen is used because there is usually blue in the foreground or in the eyes. Or, if there is green in the foreground, use the blue screen.
Measure the size of the studio, set, or green screen setup space. Dimensions affect lighting, placement, and other factors.
The green screen can be used as a seamless paper background, a foldable green background and a cotton muslin. Make sure the green screen is clean and wrinkle free to prevent shadows in the final clip.
Select the correct lighting settings for the space size and green screen size. Make sure the light is evenly placed to keep the screen lit evenly.
Best lighting for green screen
For green screen video, it is equally important to illuminate the subject and background. Both are lit independently for best results. Some videos require a half cut, full-length lens or a green screen the size of a large studioPhotography。
Even lighting is essential because darker chroma areas are not picked up during matting. One of the best lighting solutions for green screen video is continuous LED lights. They are compact, portable and do not generate heat.
How to prevent overflow Avoid reflective screens by selecting a matte green screen. Low cost and collapsible options typically use more reflective materials. Keep the subject far enough from the green screen to avoid overflowing and casting the subject’s shadow onto the background. In case of close shooting, the main backlight will counteract the overflow and background reflection. Makeup helps prevent spills from appearing on the object’s skin.
Final thoughts
The green screen video includes the process of capturing the main body under the green background, and the process of using editing software to complete all the image cutting magic. Most visual mixer software provides the keying functions required for this process. Again, remember to select the correct chroma color, correctly light the screen, and avoid overflow. Therefore, you will be able to simplify the post production part by obtaining a completely transparent background, a successful cutout, and a convincing final result.
