which default application of windows plays audio and vedio
Media player (software) Mainstream operating systems have at least one built-in media player. For example, Windows comes with Windows Media Player while OS X comes with QuickTime Player. Linux distributions may also come with a media players, such as SMPlayer, Amarok, Audacious, Banshee, MPlayer, Rhythmbox, Totem, VLC Media Player, and xine. Android OS comes with Google Play Music as default media player and many apps like Poweramp, Beautiful Music Player, VLC Media Player.
Application software An application software (app or application for short) is computer software designed to perform a group of coordinated functions, tasks, or activities for the benefit of the user. Examples of an application include a word processor, a spreadsheet, an accounting application, a web browser, a media player, an aeronautical flight simulator, a console game or a photo editor. The collective noun application software refers to all applications collectively.[1] This contrasts with system software, which is mainly involved with running the computer.