VideoLAN - VLC media player
VideoLAN is a software project, which produces free and open source software for video, released under the GNU General Public License.
It supports cross-platform. VLC media player is a highly portable multimedia player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, ...) as well as DVDs, VCDs, and various streaming protocols.
It can also be used as a server to stream in unicast or multicast in IPv4 or IPv6 on a high-bandwidth network.It doesn't need any external codec or program to work.
It is a free cross-platform media player
It supports a large number of multimedia formats, without the need for additional codecs
It can also be used as a streaming server, with extended features (video on demand, on the fly transcoding, ...)
Download VLC media Player from here