[jyl]

[EDITED after frame by frame viewing - Chrome has an extension for this)

Stop the video at the right instant and you can clearly see a black bar shaped thing about 2 feet long, positioned horizontally, right behind the fork blades about midway up from the hub. Can't tell if it is in the spokes, or got picked up by the tire tread. I'm guessing the latter because later on you see the wheel and the spokes are intact. The bar changes position from frame to frame, maybe it gets jammed in the fork crown and the end hits the downtube in the process. When the bike goes airborne, the front wheel looks still attached. I'm guessing the fork blades were broken by the impact with the ground. Anyway, seems whatever material the frame was, that rider was going to go airborne, and when the bike hit the ground, there'd be big damage. A steel frame would likely have been toasted too, maybe not broken clean through but destroyed nonetheless.