Jacques Demy’s 1964 “film opera,” with music by Michel Legrand, has a reputation for sappiness it doesn’t deserve. The chief feature of Demy’s direction is his deft avoidance of the pat, the obvious, and the sentimental, which is no mean feat when you’re dealing with material as self-consciously simple as this. Catherine Deneuve loses her fiance to the draft; he’s wounded and doesn’t write, so she reluctantly marries someone else. With Anne Vernon, Nino Castelnuovo, and Marc Michel. In French with subtitles.