This clip is then layered above a solid background clip in a video editing timeline.
With modern keying software like Keylight or Primatte, you can select a desired color range (chroma), as well as brightness range (luma), and ‘subtract’ this part of the image from the video frame in your editing application.
To understand the basics of why green and blue screens are the most popular choices for chroma keying, we must first understand how a digital keyer works. Image of Spiderwick Chronicles Blue Screen, Creative Commons/Wikimedia Why Are Blue and Green Screens Common for Compositing? Most pro video setups use a green or blue screen background – but why? And what color background is best? Once the solid color background is removed, you can ‘swap’ the background of your footage – a technique that’s used often in news and VFX work. So, while ‘chroma keying’ is the post-production work, shooting on a screen on set is the first part of the process. Chroma keying is the process of shooting video on a solid color background and then digitally removing this background during the editing/post production process. When it comes to digital compositing, how do you know which background color is right for your video project?įor newbies, let’s jump into the basics first.
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