{"id":"image-channel-extractor","engine":"media","category":"image","name":"色チャンネルを抽出","fields":[{"key":"file","label":"ファイルを選択","type":"file","accept":"image/png,image/jpeg,image/webp,image/gif,image/bmp","multiple":false,"required":true},{"key":"channel","label":"チャンネル","type":"select","default":"0","options":[{"value":"0","label":"赤"},{"value":"1","label":"緑"},{"value":"2","label":"青"},{"value":"3","label":"透明度"}]}],"sample":{}}