I’ve got next to no experience with VIDEO_TS (I do ISO all the time)
Just for laughs though, i wonder what would happen doing this ?
VIDEO_TS.VOB > rename your jpeg to VIDEO_TS.jpg (this is placed in the VIDEO_TS folder)
VTS_01_0.VOB > rename your jpeg to VTS_01_0.jpg (this is placed in the VIDEO_TS folder)
worth a try i guess ?