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40 Kilobyte Rule (lemmy.world)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 12 points 4 months ago (1 children)

Because the person creating the image didn't take the time to optimize the image. It's probably just a PNG or a JPEG, which is way overkill for representing a NES frame.

Other commenters have mentioned that the NES has 56 colors and uses tiles to draw the frame. If you took the same approach (maybe embedding a GIF tile in an SVG), you could cut down the size of the modern image significantly.

[–] [email protected] 1 points 4 months ago

PNG is fine for this. A palletized PNG on max compression would be smaller than the game and totally lossless unlike this. First you gotta take this image and map/quantize it to the original palette though to destroy the JPEG artifacts, which produce colors in between ones that would have existed in the game's output.