In this case it looks like a swarm of insects. They do not give the frame rate and exposure time of the camera, but with long exposure and short transfer one can have this effect. At a first sight, the length of the rods correspond well with the frame rate: When you see the rods frame by frame, where the rod begins in one frame is almost where it finishes in the next frame. Have to watch frame by frame to confirm this observation.
Edit: if the distance traveled by the objects during a number of frames is a multiple of the rod length, then it may be insects in long exposure.