I'm talking 16:9, I was watching a fairly recent south park (from about 2015) on an iphone12 mini, there are two options that double tapping toggles between, one is the original 16:9, the other zooms in so it's full width (including the notch), so 19.5:9. In other words it's taking a 1920x1080 image and only showing 886 lines, dropping 97 lines from the top and bottom.