IMovie will let you remove the background automatically when it detects green or blue screen or you can use a 4-point mask and strength slider to adjust the effect manually. These days it is most commonly used in films, where the background is replaced with CGI and it's how a lot of films and TV shows are shot these days. It is usually used to replace the background of weathermen and replaced with the map of the area whose weather they are reporting. The key among these is the support to key out or remove the background for a subject placed in front of a green screen.Ī green or blue screen is used when you intend to remove the background of a subject in a video and replace it with something else during post production. Apple has updated iMovie for iOS with a whole bunch of new features.
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