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https://www.reddit.com/r/CatastrophicFailure/comments/1s1mgc...

Sorry for the late reply, and sorry for linking to reddit, but it was the first place I could find the right video. I saw this video linked at least a dozen times in the hours following the incident. I believe the clip you linked to is from the same video, but with the beginning cut off.

At approximately 1.5 seconds in my link, you can see one set of lights perpendicular to the runway turn off. I admit the the lighting/colors are not as crisp as I would like, but the lights that turn off are positionally consistent with the Runway Entrance Lights and the time at which they turn off (approximately 2 seconds before the plane enters the intersection) is also consistent with the operation of the Runway Entrance Lights system.

Furthermore, if the system was not operational it should have been NOTAMed as such, and I can find no such NOTAM so my default position is that the system was operational.