An 89-year-old film, which could take cinema-goers more than eight hours to watch, is returning to the big screen.
The new digitally restored version of Abel Gance's Napoleon comes at the end of a 50-year project involving the BFI National Archive.
Running at some five and a half hours on screen, the 1927 film demands a huge investment of resources - from projectionists, musicians, conductor and audiences, and in a live performance with intervals the experience adds up to more than eight hours from start to finish.
Cinema screenings where there is no live orchestra are estimated to run to around seven hours, as theatres are likely to have a couple of breaks for the sake of viewers' comfort.
The film features full-scale historical recreations of episodes from the personal and political life of Napoleon, from the French Revolution to the arrival of French troops in Italy marking the beginning of the first Italian campaign of 1796.