You have to select (click on) Advanced to open the "Advanced-window".
In that window click on the filter/codec concerned (like I wrote before and if applicable also click on the [+]-signs in front of the codecs/filters to get further info/access).
adicoto requested for the info of/under "DVD source" (which will only appear after you "opened" that tag) and your image isn't very informative on that point as apparently you stopped one step too soon.
P.S.: Maybe you stopped one step too early in Blacklist window too (by not clicking on OK-button after having selected the codec/filter to be blacklisted)?