高清晰版
http://movietrailers.apple.com/movies/sony_pictures/district9/district9-tlr4_h640w.mov
480p高清
http://movietrailers.apple.com/movies/sony_pictures/district9/district9-tlr4_h480p.mov
720p高清
http://movietrailers.apple.com/movies/sony_pictures/district9/district9-tlr4_h720p.mov
1080p高清
http://movietrailers.apple.com/movies/sony_pictures/district9/district9-tlr4_h1080p.mov