What is the real feelings of aurura?
See this comparison of real time and time-lapse.
Real movement can be seen from the real time video.
Aurora moves faster, as it become brighter.
But 1/30 sec shutter speed of movie mode is not sufficient for capture the real colors of aurora color.
With faint aurora, the cones in our eyes does not see the colors.
Our eyes can see the colors of aurora after the brightness of aurora reaches the active range of the cones.
When very bright aurora comes, real feelings about color become similar in time-lapse.