Moving lights

Have I said this before?   One of the things I usually find a bit unclear when watching nature documentaries  about the Northern Lights is whether the video of the shimmering light curtains is being shown in real time, or is somewhat sped up.   This gif, although not of great quality, which I saw on Reddit today, nonetheless makes it clear that the shimmering is in real time, by virtue of the camera moving a lot while filming the lights.