No witnesses, like next car on road you were joining ?
OP started moving as the blue car arrived at the right wing, and either the cyclist thought he had eye contact, or, looking at the oncoming cars thought the gap was not large enough ?
if the oncoming car was close he maybe decided heading for the bonnet rather than being pushed into oncoming cars was lesser of evils.
it is difficult to decide what the gap was from the video though, and with cyclists look of shock as he arrived at the left wing, he did not expect it.Especially as the cyclists line was so close to the front of the car there's really no room for error.
OP started moving as the blue car arrived at the right wing, and either the cyclist thought he had eye contact, or, looking at the oncoming cars thought the gap was not large enough ?
if the oncoming car was close he maybe decided heading for the bonnet rather than being pushed into oncoming cars was lesser of evils.