★ ★ ★ ★ This Is Not a Film Iran’s Jafar Panahi has been banned from making movies for 20 years, so this is, technically, “not a film.” What is it, then? A record of a day under house arrest and a deflected plea for the freedom to speak, to create, and to live. In short, it’s the world within an apartment, and it’s quietly devastating. In Farsi, with English subtitles. (77 min., unrated) (Ty Burr)