After establishing record opening-day sales for 2007, Paramount Home Entertainment's Transformers went on to sell 8.3 million copies during its first week, the highest of the year, according to Home Media magazine. Transformers also debuted at No. 1 on the rental chart, with revenue estimated at nearly $10 million. In addition, the movie was No. 1 on HD DVD. With the exception of Steven Spielberg's films, Paramount and DreamWorks movies are not released on Blu-ray.