P: Import filtering

Is there a method to better filter the files you want to import from a master folder? I'll post a screen grab of what I'm referring to to help explain, but here's my issue. If, when importing, I want to keep the master folder name as part of the import, some of my subfolders may have file types that I do NOT want to include, particularly video files.  The import dialog window shows a way to sort photos, but not a way to filter out file types.  And if I was to highlight the 60 video clips that it was ganging up with all my raw still image files, it doesn't allow me to just deselect those highlighted ones. All you can do is "check all" or "uncheck all".  The net effect of all this is that I end up doing imports on just subfolders only, which then do not show master foders above them. My use of similar subfolder naming therefore makes the folder panel of the Library module a confusing mess.