Convert vob to m4v

What is the difference between .vob and .m4v?

Description: A VOB file is a movie data file from a DVD disc, typically stored in the VIDEO_TS folder at the root of the DVD. It contains a majority of the data stored on the disc which includes video, audio, subtitles, DVD menus and other navigation contents. VOB files are usually formatted as MPEG-2 system streams and can be opened by various video playback programs.; The M4V file format is a video container format developed by Apple and is very similar to the MP4 format, with the primary difference being the optional Apple Digital Rights Management (DRM) protection. M4V files are commonly used for TV episodes, movies, and music videos in the iTunes Store. These files can be played on Apple devices such as iPhones, iPads, and iPods, as well as on PCs using iTunes or other compatible media players.