How to play any audio or video file without using any media player

Hey friends, I'm going to share a cool trick to play audio and video files without using any media player. Suppose you recently installed your computer and you don't have any good media player which can play MKV, MP4 etc files in your computer but you want to watch any movie right now. Unfortunately your internet connection also is not working and you don't have the backup of your softwares,