Enhanced VOB

Enhanced Video Object, also known as Enhanced VOB, EVOB or EVO, is a container format for HD DVD video media. It contains the actual digital video, digital audio, subtitle and DVD menu contents in stream form. 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.

Enhanced VOB

Filename extension	.evo
Developed by	DVD Forum
Initial release	31 June 2006; 18 years ago (2006-06-31)
Type of format	Container format
Container for	Audio, video, subtitles
Contained by	HD DVD
Extended from	MPEG transport stream (ISO/IEC 13818-1)
Standard	DVD Book[1]
Open format?	No
Free format?	No

Some software that can play EVO files include PowerDVD, WinDVD for Windows, FFmpeg for Linux (unprotected EVO only), and the cross platform VLC Player.