Video (in the format we support) doesn't traditionally have metadata. If it did, the solution would probably simply be scanned by (and include in) the database, probably with the addition of a tag so that filters could exclude video, exclude audio, or include both.
Since there's no tagging, an obvious solution is just to create a "Video" folder in the root, and browse to it. Because it's a folder tree you can make subfolders of your video files in whatever structure you feel best.