MPlayer is really a free software and open source media player. This software can be acquired for everyone major systems, including Linux and also other Unix-like systems, Microsoft Windows and Mac OS X. Versions for OS/2, Syllable, AmigaOS, MorphOS and AROS Research Operating-system are also available. The Windows version also works, by incorporating minor problems, in DOS using HX DOS Extender. A port for DOS using DJGPP can be available.Versions with the Wii Homebrew Channe land Amazon Kindle also have emerged.

MPlayer posseses an onscreen display (OSD) for status information, nice big anti-aliased shaded subtitles and visual feedback for keyboard controls. European/ISO 8859-1, 2 (Hungarian, English, Czech, etc.), Cyrillic and Korean fonts are supported in conjunction with 12 subtitle formats (MicroDVD, SubRip, OGM, SubViewer, RT, Sami, VPlayer, AQTitle,SSA, PJS JACOsub, and your own: MPsub). Supported media formats

Physical media: CDs, DVDs, Video CDs

Container formats: 3GP, AVI, ASF, FLV, Matroska, MOV (QuickTime), MP4, NUT, Ogg, OGM, RealMedia, Bink

Image formats: BMP, JPEG, MNG, PCX, PTX, TGA, TIFF, SGI, Sun Raster

Protocols: RTP, RTSP, HTTP, FTP, MMS, Netstream (mpst://), SMB, ffmpeg:// (Uses FFmpeg's protocol implementations)

Video formats: Cinepak, DV, H.263, H.264/MPEG-4 AVC, HuffYUV, Indeo, MJPEG, MPEG-1, MPEG-2, MPEG-4 Part 2, RealVideo, Sorenson, Theora, WMV, Bink

Audio formats: AAC, AC3, ALAC, AMR, DTS, FLAC, Intel Music Coder, Monkey's Audio, MP3, Musepack, RealAudio, Shorten, Speex, Vorbis, WMA, Bink

Subtitle formats: AQTitle, ASS/SSA, CC, JACOsub, MicroDVD, MPsub, OGM, PJS, RT, Sami, SRT, SubViewer, VOBsub, VPlayer