 It is an extension to VOB.It can contain video encoded in H.264/MPEG-4 AVC, VC-1, or H.262/MPEG-2 Part 2 and audio encoded in AC-3, E-AC-3, Dolby TrueHD, DTS, DTS-HD, PCM, and MPEG-2 Part 3.There are a few consumer software solutions that can play EVO files, such as PowerDVD, WinDVD for Windows and FFmpeg for Linux (unprotected EVO only), and the cross platform VLC Player.