Video seems genuine
Those claiming that the video is fake or made a day or two after the incident should note that in the video, only the left-hand front door is open (left, as seen from front of plane) whereas the later still photography published by the Dutch fire service of the rescue operations show that both front doors have been opened. This supports the fact that the video was indeed taken before the emergency services arrived. Plus, the fairly obvious fact that the video shows people wandering aimlessly all over the crash site - which would hardly be the case a few hours later...