[ZeroGravitas]

Is this definitely not algorithmic? I've been noticing for a while that videos might have an incidental flash of cleavage and then that is used as the thumbnail. I'd always wondered if this was arising "naturally" somehow (people pausing that scene perhaps?)

On the basis of the type if video I'd discounted manual intervention. Though if people can just upload any image I'm now surprised that they're not all like this.