A versatile open-source media player for Windows, MPlayer is the foundation of many other programs using video in Windows. Overall, the player is pretty simple and not very laden with visible features, but the truth is that MPlayer is powered by highly advanced and coordinated code. It is able to support many different playback formats and uses very little system resources to do so.
MPlayer, as always, is a completely free download without restrictions for distribution.
From MPlayer Team:A versatile open-source media player for windows.MPlayer for Windows 2013.02.22
is licensed as Freeware
for the Windows operating system / platform without restrictions. MPlayer for Windows is available to all software users as a free download (Freeware).
MPlayer for Windows Virus and Malware Tests:
For security reasons, you should also check out the MPlayer for Windows virus and malware test
that has been uploaded; additional MPlayer for Windows screenshots may be available, too.