Chutes/50%
@A340Yumyum:-
In fairness to Mickj3, the aircraft is certified to deplane a full load of pax & crew through half the number of doors installed within 90 secs.
This plane was half full. There were periods on the video where the air around 1L and 4L was completely clear so that's probably why the cabin crew at those doors opened them.
With the benefit of hindsight, there wasn't so much of a need.
Well done to the crew.