The extension .VOB refers to files that belong to the type of DVD video object files. These files can contain digital audio,video subtitle as well as data.

The file structure is made into such a way that all these various forms of media are streamlined together.The file type also allows encryption of the data. Usually, .VOB video files are located in the VIDEO_TS folder of a DVD disk. The VOB video file supports several encoding techniques which are mostly based on the MPEG technique. The maximum size of a VOB video file can be 1GB.