CatBus said:

I'm not sure he got what he was aiming for with the scanlines.

The scanlines weren't explicitly put in. His script actually emulates how an aperture grille CRT (and other CRTs) functions and the scanlines in this case are a side-effect of that.

JEDIT: Check out his other samples: https://www.doom9.org/showthread.php?s=3a7a37048d43d2750ea9abe6aa4dd0b0&p=1683051#post1683051

JEDIT 2: Also keep in mind that this is best viewed at a distance. Neither a CRT nor this look "right" when examined up close.