Watch Free Online HD Moviesjoy. The 1st Cannes Film Festival was held from September 20 to October 5. 1946. In this documentary, British actress Charlotte Rampling recounts the eventful beginnings of the film festival. In addition, Frédéric Chaudier and Frédéric Zamochnikoff have compiled unpublished contemporary documents from the family archive of Jean Zay, original footage from various eras of the festival, which is now considered the most important and fascinating film festival in the world.