The video is 15 seconds long, and presents images within a rectangular frame. In the background, throughout the video, there is an image of a pupil in gray tones.
Seconds 00:00 - 00:03
A Biohazard sign (see Wikipedia entry for more info) rotating counter-clockwise, and then clockwise for the first 3 seconds.
Seconds 00:03 - 00:06
The Biohazard symbol fades to gray; a human skull fades in and out of view.
The skull image also seems to flash again around the 00:10 mark.
No audio has been detected.