I tried the following to see if it would help. Neither item helped.

* I reset the database and re-restored the backup. Still says zero items in them.
* I created a new folder under Video that was the same as one of the other folder's paths to see what would happen. It gathered all of the appropriate artwork and subtitles, all of which were skipped because they were already in the database. Zero items again. However in the Mezzmo interface, it shows all of the files that I expected to see.