VLC is a free and open source multimedia player that plays most multimedia files as well as DVD, Audio CD, VCD, and various streaming protocols.
VLC Media Player is Simple, Powerful and Fast
Plays Files, Discs (DVD, CD, VCD, Blu-Ray), Webcams and Streams
Plays most codecs with no codec packs needed:
MPEG-2, H.264, DivX, MPEG-4, WebM, WMV player
Completely Free, 0 Spyware, Ads or User Tracking
Works on most platforms: Windows, Linux, Mac OS X, Unix…