just wanted to check.

If I see VTS_xx_yy.VOB I will also see a *.IFO and *.BUP file. so the xx part of the file name is that the titleset?

example...

VTS_02_01.VOB does this mean that the DVD's titleset for this file is 02? (could it be that more then one titleset exist in a file name VTS_xx_yy.VOB? I releaze that YY changes or can change. I just wonder if the XX will always disignate ONLY one titleset.

Thanks!