video player: brightness and volume gestures: default settings
brightness and volume gestures are enabled by default. However, while they may be great features, they are not expected by default (in my opinion), and due to this could take a user by surprise when the volume is suddenly 100% in a quiet environment. A similar situation could be encountered for brightness, and the opposites of these situations also apply.
In summary, I just wanted to bring up whether this behavior should be considered default.