It is hard to see but in the video a man is seen dressed with a white thoub, white turban and a belt around his waist almost identical to the way the Prophet (s) and the sahaba use to dress walking the streets of Syria during this chaotic period. Everyone else is frantic running around whilst this man is calmly walking like nothing is happening. He then picks up a body of a wounded person with ease and continues to walk towards a crowd of people and delivers the body to them. He then vanishes from the seen.
Here is a slow motion video with pauses at key points:
More video analysis: