If you ask me, Metallica's "One" is the best metal vid of all 'time.'
Hard rock and metal aren't exactly the same thing: Both splinter into classic, prog, hair, scream, black, dark, etc. Fall Out famously sang about metal breaking hearts, and that is true.
While metal has been kind of making a comeback, it was a huge phenomenon from the late Seventies, spawned in its Satanic glory.
Today it lives in indie and mainstream circles. The last metal vid I found insp. from is Sally by HSY.
Metal dominated the late Eighties until Nirvana punched a whole, 1991.
Metal will live, I swear, online, and in our hearts. Its acts are being inducted into the Rock Hall - slowly.