Removing the "comb" lines inherent in 90s broadcast tape.

Before 2020, upscaling was mostly "interpolation"—software just guessed where pixels should go, resulting in a blurry, "waxy" mess. The release of specialized AI software like changed the game.

Many 2020 upscales also applied a subtle color grade to fix the "magenta tint" common in early DS9 episodes. How to Experience It