FOR OCULUS RIFT DK2 : Download the video with integrated player on video page: Extract the files with 7zip or winrar : Turn ON your Oculus rift : Click on the video icon : The video start automatically after 5 seconds : Enjoy!
FOR OCULUS RIFT DK1 : Play it with VRplayer You need a codec pack to open video with Direct Show VRplayer setting : File -> Open file -> with DirectShow -> Select the video Media -> format -> Over/Under ---------> projection -> Sphere ---------> Effect -> None Device -> Layout -> SidebySide ----------> Distortion -> None ---------->Tracker -> Oculus Rift