'Total Recall': first video footage of Colin Farrell as Doug Quaid
The mysterious YouTube clip contains material showcased at last summer's Comic-Con International, along with title cards.
Arnold Schwarzenegger portrayed Quaid in Paul Verhoeven's 1990 original. Kate Beckinsale, who will play the character's wife in the remake, said that the new Total Recall will be "very different" to its predecessor.
The leaked clip also offers a glimpse of Jessica Biel in the role of freedom fighter Melina. Biel and Beckinsale will engage in a fight scene in the movie, a sequence which the actress claims will not be "overtly sexy".
Farrell described the remake as being much "darker" in tone and less camp than the original.
Total Recall, directed by Len Wiseman, opens on August 3 in US cinemas and on August 22 in the UK.