@Charby said: "height/width" is not a property name but just height divided by width. Okay, I see. Thanks for clarification. So the only one issue I see left here is that there is no such inherited members shown in documentation: VideoOutput (no scale member): http://doc.qt.io/qt-5/qml-qtmultimedia-videooutput-members.html Video (scale member shown): http://doc.qt.io/qt-5/qml-qtmultimedia-video-members.html