.BUP File Extension

Backup of a .IFO file from a DVD video disc; stores information about the content of the DVD; may be accessed if the VIDEO_TS.IFO file cannot be read; like IFO files, BUP files are not encrypted.

Backup of a data file created automatically by various applications; generated in case the program crashes or the original file becomes corrupt and needs to be restored.

The ".bup" extension is often added after the original file extension. In order to open the file with the correct program, the ".bup" extension may need to be removed.