key out

English

Verb

key out (third-person singular simple present keys out, present participle keying out, simple past and past participle keyed out)

1. (transitive) To remove or make transparent, usually through use of a chromakey.
   • 2021 September 11, Anina Ot, “What Is a Green Screen and How Does It Work?”, in MakeUseOf‎^[1]:

     Also, they’re easier to key out around objects that melt into the green screen, like blond hair.