Convert vob to rgf

What is the difference between .vob and .rgf?

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 LEGO Mindstorms EV3 Robot Graphics File (RGF) is a proprietary binary file format used by the LEGO Mindstorms EV3 software to store robot graphic models. It is a vector-based file format that stores information such as the robot's 3D geometry, color and other visual properties, as well as the model's connection points, used for connecting with other LEGO elements.