Confirmed, I have exactly the same problem. According to this http://www2.exit1.org/archive/dvdrip-users/2007-07/msg00002.html the problem is a variable which is not populated correctly when dealing with hard-disk dumps or loopback mounted images instead of real DVD's
** Changed in: dvdrip (Ubuntu) Status: New => Confirmed -- Cannot extract vobsub file from ifo files in local folder, only from DVD https://bugs.launchpad.net/bugs/242604 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs