In the Animation Export panel which is in the “Properties Editor’s” “Data Properties” tab does “Ease In” start in advance of the “Start Frame”, and does “Ease Out” end after the “End Frame”? Or does “Ease In” start in on the “Start Frame”, and does “Ease Out” end on the “End Frame”?
In other words does easing happen outside the window of time defined by the “First Frame”, and “Last Frame”, fields, or does it happen within it?