Development Models of the Oculus Rift are currently available from the Oculus Rift store here.
1. Log in at www.studsvr.com/ and download the video you want to watch. Wait time will depend on the video size.
Option 2: Download Virtual Desktop (Available on Steam). Choose Video tab in headset, select Dome 180 or Fisheye 180. Click on "Open, navigate to the folder where the video was saved, double click video, press play on Virtual Desktop.