I know of no tool to do this automatically. It can be done with a hex editor or VobEdit, a good understanding of subpicture command sequences (see ), and a lot of time.
--------------------- 1989 e34 525 with Dinan chips... traded in at 170,000 miles for 1994 e32 740i with Dinan badge, ...traded in at 190,000 miles for black 2007 e92 335i