WMP

WMP stands for Windows Media Player. This is one of the most used PC media players because it comes with the Windows operating system. It supports quite a lot of video natively including MPEG-1, WMV, ASF etc. It can also play AVI files but AVI is a container, which means in order to play these files with WMP, you may need to install additional codecs, or FFDShow. You can also play MPEG-2 if you have a codec installed, which is done when you install a software DVD player like WinDVD.