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Want to learn
how to make a green screen video?

Read our quick guide! 

How to Create a Chroma Key Effect

Even if you’re brand new to movie-making, you’ve probably heard of chroma keying or green screen technology. No Hollywood blockbuster these days can happen without green screen effects. In this article, we’re going to discuss chroma key technology and give you some ideas on how to use a green screen to create your own cool video.

What Is Chroma Key? Chroma keying was invented in the 1940s. It’s a technique that allows film-makers to replace the original background in a video with another image by isolating a specific color and making it transparent. You can see this effect in any modern superhero movie – every time you see the characters fly in front of skyscrapers with some epic music playing in the background, you can be sure this scene has been filmed using chroma key. Actors on ropes move against a green screen and then in post-production the background is replaced with images of a city or a distant galaxy – it works just like that.

Before we get to setting up your first green screen video shoot, watch this short demo video we’ve made in Movavi Video Editor – an easy-to-use app which includes the chroma key feature.

What You Need to Shoot a Chroma Key Video

Green backdrop The most commonly used color for the chroma key backdrop is green, so chroma key is often called the “green screen effect”. Why is green the best color? Because it gives the most contrast with natural human skin tones. In the final stage of our test, we’re going to remove the background color from the video. If the background color is similar to skin tone, people’s faces will disappear from your movie. You can also use a blue screen background, but it will require twice as much light and may cause problems when filming people with dark hair or clothing.

There are two ways you can get a backdrop:

Special Lighting Setup You're probably asking yourself how to light a green screen. When planning a green screen lighting setup, keep in mind that you need the background to look as monotone as possible. Creating a soft diffused light without hot spots or shadows on the backdrop is the best way to shoot great chroma key video. Follow the tips below for best results: You can shoot your chroma key video using different devices – a DSLR camera, a smartphone, or a webcam. When you choose a camera for green screen video, make sure it supports HD quality. Don’t forget you will need a sturdy tripod to mount your camera on. To effectively shoot against a green screen, use the following camera settings:

Background Video When you’re done shooting your green screen footage, it’s time to find some cool background video footage for chroma key compositing. You can either record the video yourself, or download ready-made footage from a stock video website. You’ll find a good collection of animated clips to replace a green screen background on VideoBlocks. It’s an online video library with lots of stunning and/or funny moving backgrounds in HD quality. For more information, click here.

If you need still images for your video, GraphicStock is one of the best websites - you’ll find awesome digital photos and clip art in high resolution. For more information, click here.

Chroma Keying Application Finally, you need a good app to edit your footage and produce the final video. We recommend Movavi Video Editor. It’s a versatile application with a built-in chroma key function and lots of other useful tools. To learn how to create a green screen video with Movavi Video Editor, read this tutorial or check out this video guide. You can download a free trial version of the app below. Simply the best way to record from your screen in HD. Make video footage of any application, record online streaming video, webinars, even Skype calls, and save clips in all popular formats for viewing on multiple devices.