Here is a background on some of the factors you may want to know about in regards to this strange happening:

Tether incident unexpected electric overload. UFO during Live NASA transmission.

Ice debris or UFOs:

Both arguments are correct. There is both ice debris and UFOs, but they get mixed up in this clip. That is because all of them looks the same in this camera. You can watch a clip (https://youtu.be/OC7zw8aemlg) where they do a formation.
Also a full, uncut version (https://youtu.be/ujcSwuRBXRc) is available.

Here is some hints how to distinguish them.

Not affected as much in size as the ice debris when zooming inn/out, since they are further away.

They got sharper edge and are more dense (although less visible many times because of the distance).

Can appear from nowhere even though no zooming.

Faraway objects, they cover a large distance in a short time even when zoomed out (indication of high speed) and some almost leave a trail behind, while the close debris passes camera view only by floating and no trail.

Could this be ice debris or is it definitely unexplainable?  As mentioned the comments are all over the place on this one and we may never know what happened on that crazy and strage day in space.