An interesting discussion - whether the high viz guy was just going to step in the kerb to pass the two pedestrians or something else, we'll never know.
If this were a 'spot the ball' sort of thing, I'd say the guy was just going to step into the kerb to pass behind the peds, and surely he'd have seen the very bright pool of light on the road surface to warn him of the approaching bike?
But as said, we'll never know but it does illustrate that a cyclist has to stay very alert to the possibility of events like this. Good anticipation is key and having an awareness of what is around you (as in you'd be in a pickle if you took avoiding action and there was a car right behind you etc etc.). I never quite get why some people cycle with headphones on and listening to music etc. but that's another whole debate for another time!
Anyway, I'm glad you and the ped were safe - that's what counts.
My habit is to delete videos, ready for my next ride, therefore the unbrightened version of that video has been deleted. I've extracted the final few frames containing his leading left foot. I'm unsure if his foot has disappeared because of speed and the limitations of my cheapo camera, or if it's suddenly been angled in line with the direction of the kerb, as a reaction to some combination of the beep an bright light (which isn't as bright as it looks on the brightened video). I'm certain Bignose hiviz would have blundered into me if I hadn't beeped and loudly, and that pen he's holding would have surely have caused a nasty puncture wound to my balls.
I'm giddily happy about this "1800LM" light - it's greatly improved my visibility! People are not conditioned to see cyclists, but they are conditioned to be wary when they see a bright headlight. I can't emphasise enough, how much this light has improved matters, when cycling at night. It's such a relief finally having a bike light which both allows me to see the road and obstacles clearly, as well as helping me be seen. Here are two frames from unedited video, which do show more accurately this light's effectiveness.
This is from the original video, before brightening:
I wouldn't be surprised if my new "1800LM" light alerted him to the approaching majesticness of my bike, it does look bright. The smaller light area below the brightest area, is the output of the 1.5W light in the fork. I may install a second 20W "1800LM" bike light, but I'm running out of space on my handlebar for independent switches; I may need a waterproof switchboard of some kind. I've still got to install a 12V car/lorry ultrasonic wildlife deterrent. But will it drive dogs into a frenzy as I pass by, make them frothily mad enough to chase me down and maul me?