When the acclaimed cinema video-essay channel Every Frame a Painting made its comeback this past summer, its creators Tony Zhou and Taylor Ramos took a close look at the “sustained two-shot,” which captures a stretch of dialogue between two characters without the interference of a cut. Though it’s become something of a rarity under today’s shoot-everything-and-figure-it-out-in-editing ethos, it was used often in classic Hollywood pictures. Take, for example, the work of Polish-born writer-director Billy Wilder...