Based on the sign and the flag seen in the background, this bout takes place in Mauritius, a tropical island in the Indian Ocean known for being home to resorts such as the Four Seasons and the Oberoi. The match takes place in a more spartan setting, and it features the competitor dressed in black attempting to apply a submission hold with a flying arm bar.
The match does end quickly, just not the way he intended.
The video quality isn't the best, but it appears pretty clear that the fighter knocks himself out, not to mention mangling his neck. So the competitor dressed in white doesn't really need to apply an arm bar of his own, although you could give him the benefit of the doubt since the referee might have acted more swiftly in waving an end to the match.