1080p
http://avideos.5min.com/100/5191100/519109911_8.mp4
720p
http://avideos.5min.com/100/5191100/519109911_4.mp4
480p
http://avideos.5min.com/100/5191100/519109911_2.mp4
高清晰版
https://vfx.mtime.cn/Video/2015/09/14/mp4/150914110043477462.mp4
1080p
http://movietrailers.apple.com/movies/independent/ismileback/ismileback-tlr1_h1080p.mov
720p
http://movietrailers.apple.com/movies/independent/ismileback/ismileback-tlr1_h720p.mov
480p
http://movietrailers.apple.com/movies/independent/ismileback/ismileback-tlr1_h480p.mov