流畅播放
http://player.youku.com/player.php/sid/XNDM2MDEwMjQ4/v.swf
1080p高清
http://trailers.apple.com/movies/independent/backwards/backwards-tlr1_h1080p.mov
720p高清
http://trailers.apple.com/movies/independent/backwards/backwards-tlr1_h720p.mov
480p高清
http://trailers.apple.com/movies/independent/backwards/backwards-tlr1_h480p.mov