"key out" meaning in English

{
  "forms": [
    {
      "form": "keys out",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "keying out",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "keyed out",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "keyed out",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "key out (third-person singular simple present keys out, present participle keying out, simple past and past participle keyed out)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs formed with \"out\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2021 September 11, Anina Ot, “What Is a Green Screen and How Does It Work?”, in MakeUseOf, archived from the original on 2023-06-20:",
          "text": "Blue screens are much easier to use when filming dark scenes, where there shouldn't be much light. Also, they're easier to key out around objects that melt into the green screen, like blond hair. Still, blue screens are more expensive to use as they need a lot more light to work properly.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To remove (something) or make (something) transparent in a scene through the use of a chromakey."
      ],
      "id": "en-key_out-en-verb-~g91h-Ag",
      "links": [
        [
          "transparent",
          "transparent#Adjective"
        ],
        [
          "scene",
          "scene#Noun"
        ],
        [
          "chromakey",
          "chromakey#Noun"
        ]
      ],
      "raw_glosses": [
        "(transitive) To remove (something) or make (something) transparent in a scene through the use of a chromakey."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "key out"
}

{
  "forms": [
    {
      "form": "keys out",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "keying out",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "keyed out",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "keyed out",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "key out (third-person singular simple present keys out, present participle keying out, simple past and past participle keyed out)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs formed with \"out\"",
        "English terms with quotations",
        "English transitive verbs",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2021 September 11, Anina Ot, “What Is a Green Screen and How Does It Work?”, in MakeUseOf, archived from the original on 2023-06-20:",
          "text": "Blue screens are much easier to use when filming dark scenes, where there shouldn't be much light. Also, they're easier to key out around objects that melt into the green screen, like blond hair. Still, blue screens are more expensive to use as they need a lot more light to work properly.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To remove (something) or make (something) transparent in a scene through the use of a chromakey."
      ],
      "links": [
        [
          "transparent",
          "transparent#Adjective"
        ],
        [
          "scene",
          "scene#Noun"
        ],
        [
          "chromakey",
          "chromakey#Noun"
        ]
      ],
      "raw_glosses": [
        "(transitive) To remove (something) or make (something) transparent in a scene through the use of a chromakey."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "key out"
}