Is there a way to add keyword tags to files

for some reason my video files cant add metadata through the properties section, so I've been trying to tag my files on Mp3tag however there doesn't seem to be a keywords option. if mp3tag doesn't have it do you know of any other programs that do.
(what I'm trying to do >>>

For what kind of video files do you want to add metadata? MP4?

With "properties section" do you mean the windows file explorer properties? Which properties exactly do you want to add?