test.qml

GPage {

  Text {
        id: counter
        // ...
        
        MouseArea {
            id: theCounter
            anchors.fill: parent
            onClicked: {
            console.log("can't reach videoOutput1");
            }
        }
    }



   body: GBody {
        id: videoBody
        anchors.fill: parent

        Item {
            id: recorder
            anchors.fill: parent

            VideoOutput {
                id: videoOutput1
                source: cameraObject
                fillMode: Image.PreserveAspectCrop
                orientation: cameraObject.orientation
                anchors.fill: recorder
            }
        }
    }
}