The other thing I noticed was the clip was split by two horizontal lines on the screen ( see arrows ) . When the scene would move fast , you could see the difference in the picture between the top , middle , and bottom of the screen . I have done NOTHING to my PC lately and I sat dumbfounded as to why it would all of a sudden start doing this .

Question: Why may the narrator have not watched the whole video ?
Answer: They did n't like watching a clip on a PC .They did n't like content .They did n't like the idea of watching a video on a PC .They did n't like the visual formatting .