The document discusses synergy and cross-media convergence in the film industry. It defines synergy as the simultaneous release of multiple related products to promote each other, like a film and its soundtrack. Cross-media convergence involves combining different mediums, like film, television, and websites. Large media conglomerates can best take advantage of synergy by using all their subsidiary companies to promote linked products. For example, a film studio and record label under the same parent company can work together to promote a film and its soundtrack. The document also discusses how synergy was used for The Hobbit film franchise through related products and marketing across media.