Someone on FB just posted this and when I pointed out what I think about it he didn't believe me. I'm quite knowledgeable in computers and instantly recognized what he's doing in the video.
At first he is using the very commonly used tool ffmpeg which is used to convert media files. It spits out a lot of verbose data that looks very much like "hacking".
Then he's connecting to another computer using the ssh tool where he's running a little script that shows something that he himself has prepared before hand, a text file. That's it.
So it's complete nonsense. I can replicate (and have) this video in 5 minutes and even make it look more like hacking. The real question is; where did it originate and what is the reason for it. Is it just someone trolling or is it disinformation to cause discord?.