When: Sept. 18-26Where: San Sebastian, Spain Web: sansebastianfestival.com DONOSTIA HONOR Ian McKellen, one of Britain’s most prestigious and commanding stage actors who gained mass popularity as Gandalf in “The Lord of the Rings” trilogy and Magneto in the “X-Men” films, will receive the festival’s Donostia Award Sept. 23. WORLD PREMIERE One of the biggest world preems is “The Dancer and the Thief,” the first feature film in seven years from Oscar-winning director Fernando Trueba (“Belle epoque”), a tale of high romance among Chilean down-and-almost-outs. AROUND THE FESTIVAL There’s a good buzz on “The Scouting Book for Boys,” first-timer Tom Harper’s sobering coming-of-ager, and “Masks,” where Catalan actor Josep Maria Pou explains his acting chops. And Mario Iglesia, Galicia’s leading auteur, bows “Relatos.” Co-hosted by San Sebastian, the inaugural Digital Audiovisual Forum, held Sept. 17 on the eve of the fest, will analyze digital distribution and exhibition. Sales agents, take note: European Film Promotion imports eight enterprising film buyers for European Distributors: Up Next! Sept. 18-21, a discussion and networking forum. Valencia, Andalusia, Madrid and Trans-Pyrenean regional film authorities and producers present policies, fests and pics. Unfinished pic showcases Cinema in Motion and Films in Progress unspool Sept. 21 and Sept. 22-23.