Automatically add files to iTunes not processing mp4 files on Windows 8.1
I have iTunes 12.1.1.4 install on a Windows 8 (x64) system. I have been using iTunes for quite some time and my library is located at c:\Music. On earlier versions (version 10 of iTunes for example) I would drop an MP4 file into c:\Music\Automatically Add to iTunes" directory and iTunes would process this file and add to either the movies or TV Shows section.
I have not used this feature in some time but now have started to. Currently, if I place the mp4 in that directory, iTunes does not do anything with the video. I have gotten to using "Add Folder to Library" and iTunes will then process the directory. I do have "Keep iTunes Media folder organized" and "Copy Files to iTunes Media folder when adding to library" checked.
How can I get iTunes to recognize that a file has been placed in this directory and process it?
iPad Mini, iOS 8.1.3