The "HDX4 Player" consists of the powerful HDX4 decoder and a video player which can not only playback MPEG4 videos but also a great number of common audio and video files. After having installed the player you will not only be able to play MPEG4 files but also be able to play and open other container formats like MP4 as well as audio tracks encoded in MPEG-1 Layer 2, Ogg, AAC or AMR