* @brief name "underlay", Video rendering by underlay, true or false
* This shows video composited underneath the window by the system. This means it may ignore rotation of the video-view
* If false, video-view shows decoded frame images sequentially.
* @brief name "underlay", Video rendering by underlay, true or false
* This shows video composited underneath the window by the system. This means it may ignore rotation of the video-view
* If false, video-view shows decoded frame images sequentially.