This looks like light reflecting from Low Earth Orbiting (LEO) satellites. You can see them on the ground all the time when the sky is clear. Just look in the hour or so after sunset or before sunrise. The satellite solar panels reflect sunlight because they are just past the Earths shadow in bright sunlight while it is still dark on earth. The same would happen on the space station when it is in darkness, but the satellite is over the shadow horizon in bright sunlight. These satellites include GPS satellites and the new Starlink satellites, but some of the brightest are NRO reconnissance satellites. They usually travel on a slanted N-S or S-N direction. The slant is just west or east of true north or south.
I have spent hours and hours on the NASA live ISS feed and seen it pass over lots of storms. I think the blue flashes down near earth level is lightning. They have streamed lighting shows that were incredible.
But right now it is in a condition where you can see the stars.
At the 4:41 mark —> what is those Blue Lights at that location ?