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Walter Murch gives a lecture about the history of film and filmmaking in general at the Sheffield Doc Fest. The presentation is roughly 45 minutes long, followed by an interview of similar length during which Walter talks a lot about cinema. At 55:00, he mentions his famous picture editing theories laid out in his book, In the Blink of an Eye.
Watch now Walter Murch Lecture - From The Godfather to The God Particle.