Other DVD Containers
Some DVD Recorders use DVD-VR format and store multiplexed audiovisual content in VRO containers. A VRO file is equivalent to a collection of DVD-Video VOB files. The VRO files can be played directly like a VOB if no editing is intended. Fragmented VRO files are not widely supported by software players and video editing software.
Enhanced VOB (EVO) is also an extension to VOB, originally meant for the now-discontinued HD DVD video. It can contain additional video and audio formats such H.264 and AAC.
Read more about this topic: VOB