Why is my MacBook Pro screen twitching?

Question

macbook

I came home today after a long trip, I decided to open the laptop and I see that there is nothing on the screen, everything is black. The screen itself is not broken and I saw that the pixels are not damaged + the screen was not turned off, but just a black background.
I decided to follow Apple's instructions and reset Command + Option + P + R and everything was restored. Only after a few minutes the screen had already begun to twitch and multi-colored dots began to appear. I am attaching a video to the question.
https://www.youtube.com/watch?v=NUW2QZq4sxg&featur... .
Now everything is fine, I do not notice this, well, for now. What could be the reason? Hardly overheating, I do not play games and do not run any high-loaded applications.

Answer 1

These are kranty campaign, I have the same thing. It appeared on its own. And I began to notice that he twitches if he is cool (until he warms up) And if I strongly clamp the upper right corner of the screen (although I saw the same on YouTube from an American, he clamped the lower left corner) then it stops shaking. And there is no shaking if you bring the screen through the cord to another monitor, it turns out it's not the video cards. For 2 years, the answer to the problem was not found (