Under normal twinkling conditions ( most clear nights ) you can see the colors more distinctly by looking through binoculars and swirling them around in a tight circle, so the stars make loops in the field of view. You will see the colors spread out along the loops. ( Make sure no one is watching you :-)
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This is exactly what that looks like, and I think it's very likely that's what we're seeing in the video shots. They would be single frames of a jittery magnified star.
Exactly.
The screen captures are not related to the "witness" calls to the radio station.