Ask HN: How do query a websites media in 2024?

I have what feels like a ridiculous question given the year, but I've found that what used to be a case of pointing a search engine to a specific website and then searching for embedded video, specifying resolution, aspect ratio etc much more convoluted than it used to be.

I'm trying to search a for any older embedded content a website has that is hosted specifically in 4:3 resolutions. I don't mind manually searching for 1024768 and 800600 in different queries.

I have realised this is surprisingly awkward to do, is there anything that does this better than Google's long abandoned advanced video search?