I picked up a couple silent black and white reels in thrift stores in my college days. (Saw quite a few if them, as it seems that nobody ever donated the color/sound versions.) Watched them on a cheapo little self contained projector that looked like a portable tv, that could scorch a frame if it ever jammed.
To the best of my recollection, the SW subtitles are real.
I have never seen a silent BW super 8 of Empire, let alone knew it existed!
I wonder if the person who posted the video has the box it came in?