It's from "Roman Holiday". That's Audrey Hepburn and Gregory Peck.This looks like a frame from a 50s-60s Hollywood movie traced, or rather, "mangaified" with the use of AI.
But also if you look at the dithering patterns elsewhere in the image, they look equally as smudgy. The other upload was of lower resolution, so it could be that the uploader used like a Waifu2x or similar to upscale the low-res raws, and so the whole AI look is a consequence of that. The frame doesn't look nowhere near as suspicious in the other upload
From the later Golden Age of American cinema, directed by William Wyler