Frozen - Hans pleads with Elsa to undo the winter HD

During 2012, while Giaimo and the animators and artists conducted preparatory research and developed the film's overall look, the production team was still struggling to develop a compelling script, as explained above. That problem was not adequately solved until November 2012, and the script would later require even more significant revisions after that point. As a result, the single "most daunting" challenge facing the animation team was a short schedule of less than 12 months to turn Lee's still-evolving shooting script into an actual film. Of course, other films like Toy Story 2 had been successfully completed on even shorter schedules, but a short schedule necessarily meant "late nights, overtime, and stress." Lee estimated the total size of the entire team on Frozen to be around 600 to 650 people, "including around 70 lighting people, 70-plus animators," and 15 to 20 storyboard artists.