Comment 3 for bug 69651

Just a note, for others brought here by the error message, that one sets the directory that DVD are ripped to in MythVideo settings, not MythDVD settings. I set it to /var/lib/mythvideo/ and it worked fine. (You could probably add dvd to that if you created the directory, it all depends how you want to manage your Videos, myth can use the directory structure).

Quite likely, then, that this is a bug report for MythVideo, which should have its default path set to match the Ubuntu packages, which implies /var/lib/mythvideo under the current set-up.