Car driver at fault without a doubt. Up until approximately -0.20 seconds into the clip the bike rider is 'riding the mirror' so as to be seen, he's also not THAT close to the car in front. At around -0.16 seconds into the clip he makes a sweeping manoeuvre, looks through the gap and goes for it. Any other time this would have been standard practice to hook the bike out for the big one, but either the car driver wasn't aware of how quick a bike can get up and go (doubtful) or they'd had some beef earlier.
Incidentally, this was how my riding days were ended. I was following a vehicle that had shown no interest in overtaking the car in front, I too was riding the mirror so that he could see me. I cogged down, even though I didn't need to, so he'd hear the pipes and then hooked it out for the big one. I got twa**ed in the side and knocked off the road. Would have come out of it with minor injuries, except for the abrupt stop as my bike, and my leg, slammed in to a concrete post. I must take a big chunk of the blame though due to my excessive speed.
Nothing physical or mental stops me riding, it's just that Mrs YZ said she doesn't want me riding again until I'm at least sixty, so that I have a full pension.
Been on plenty of bikes since, I just never bought another one. Safer on the MotoX.