.RARGB File

The rargb is not actually a file extension, but a "label" of certain warez groups that offer rips of movies over the P2P networks.

RARGB is usually just part of the file name and the the files are in actually in one of the common multimedia formats, i.e. AVIs, MP4s, MKVs or similar.

This mainly confuses users that have file extensions of known formats hidden by default.

How to open:

Files with rargb in file name are usually movies playable in any video player, because they are usually in one of the common file formats.

How to convert:

Depending on the actual format of the video, you can convert it to other multimedia formats with many available multimedia converters.