I may be blind here, but when people produce genius works like this (The Shining as rom-com), I assume they’re working from trailers and not recording or grabbing clips from the actual movie. If so, are they downloading from production house sites (though most seem to only let you watch online)? Grabbing stuff off of DVDs?
Not so inconceivable, I know, but some clips are watchable on full-screen (whereas I have fully seen TV shows that were obviously produced by recording a TV screen with a handheld camera).
So- is there some treasure trove of high-res movie trailers I don’t know about?