Edward Berger’s “Ballad of a Small Player,” Claire Denis’ “The Fence” and James Vanderbilt’s “Nuremberg,” are set to play in main competition at September’s San Sebastian Film Festival. The 73th edition...

LOCARNO, Switzerland — Unspooling in sweltering humidity, Switzerland’s Locarno Film Festival, Europe’s biggest mid-Summer movie event, sometimes dazzled, led by an ebullient Emma Thompson. More than anything else, in industry terms,...