Titanic discoverer Robert Ballard was interviewed on 15 April 2012 - 100 years to the day after Titanic sank - in the former offices of Lord Pirrie (Chairman of Harland & Wolff).
James Cameron's interview took place on the red carpet at the UK premiere.
The extended DVD version features nearly 50 minutes of exclusive interviews with Titanic experts and special featurettes filmed on location at Queen's Island.
The concept of punctuating the narrative with vintage black and white clips to highlight dramatic or comedic moments was inspired by the HBO TV series 'Dream On' (1990-1996)