Much of the film is made up of the original material filmed by expedition member Frank Hurley. However much of the story was left without the original movie coverage, after he was forced to discard all cameras except for his pocket Kodak, while fleeing the ice floes. As a result, halfway through this film you see mostly pictures of the sea, surrounding ice floes and landscapes made by more recent expeditions. However, this film doesnt include much of the re-staging that seems to have been done for the IMAX film, that used replica boats and actors to help bring the adventure to life again, and in particular, the re-assessment of the crossing of South Georgia Island using modern mountaineering and equipment. Other than that, this film based on the book by Caroline Alexander gives a clear account of the whole adventure, it pays due homage to the protagonists and contains other interesting footage, such as interviews with descendants and the museum exhibit of the James Caird. If you can, try to get the full IMAX film by the same director - though its currently only available on DVD in Region 1. Hopefully they will soon produce it also for the other regions.