this enters the DVD root menu, or exits back to the title from the menu. this jumps to the DVD title menu. this jumps into the DVD root menu. this jumps to the Subpicture menu. the jumps to the audio menu. this jumps to the angles menu. this jumps to the chapter menu. if such a button exists. if such a button exists. menu, if such a button exists. menu, if such a button exists. button in a menu, if such a button exists. multiangle feature. feature. A set of commands that may be issued to an element providing the GstNavigation interface. The available commands can be queried via the gst_navigation_query_new_commands() query. For convenience in handling DVD navigation, the MENU commands are aliased as: GST_NAVIGATION_COMMAND_DVD_MENU = GST_NAVIGATION_COMMAND_MENU1 GST_NAVIGATION_COMMAND_DVD_TITLE_MENU = GST_NAVIGATION_COMMAND_MENU2 GST_NAVIGATION_COMMAND_DVD_ROOT_MENU = GST_NAVIGATION_COMMAND_MENU3 GST_NAVIGATION_COMMAND_DVD_SUBPICTURE_MENU = GST_NAVIGATION_COMMAND_MENU4 GST_NAVIGATION_COMMAND_DVD_AUDIO_MENU = GST_NAVIGATION_COMMAND_MENU5 GST_NAVIGATION_COMMAND_DVD_ANGLE_MENU = GST_NAVIGATION_COMMAND_MENU6 GST_NAVIGATION_COMMAND_DVD_CHAPTER_MENU = GST_NAVIGATION_COMMAND_MENU7