this post was submitted on 02 Feb 2025
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Animemes

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Memes related to anime. Animemes.

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[–] abfarid@startrek.website 43 points 2 weeks ago (3 children)

No way media compressed 5x.

[–] Anafabula@discuss.tchncs.de 15 points 2 weeks ago (1 children)

Maybe they store images as uncompressed .bmp for some reason

[–] Lichtblitz@discuss.tchncs.de 4 points 2 weeks ago (2 children)

bmp should not compress more than other media files. jpeg, png, etc. can compress so much because they are lossy

[–] Kwdg@discuss.tchncs.de 11 points 2 weeks ago (1 children)
[–] Lichtblitz@discuss.tchncs.de 2 points 2 weeks ago

You're right. png can be lossy but that's uncommon in the wild.

[–] Anafabula@discuss.tchncs.de 4 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

Three files of the same image: A png (15.7MiB), a bmp (28.8MiB) and a bmp.zip (16.4MiB)

PNG actually uses the same compression algorithm as ZIP (DEFLATE).
Here are the files.

[–] Lichtblitz@discuss.tchncs.de 3 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

The image doesn't look like a photo. The meme is about porn. Digital images can contain large areas of repeating patterns (uniform color areas for example) that can be compressed losslessly pretty well. Even slight noise from an image sensor can block that kind of compression.

[–] Anafabula@discuss.tchncs.de 7 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

With a picture from Unsplash:
Three files of the same image: A png (34.5MiB), a png.zip (34.5MiB), a jpg (4.9MiB), a bmp (98.2MiB) and a bmp.zip (65.1MiB)

ZIP compression of bmp is worse, but still compresses more than png. Here are the files.

[–] Lichtblitz@discuss.tchncs.de 5 points 2 weeks ago* (last edited 2 weeks ago)

Fascinating. That's much more than I expected. Thanks for taking the time.

[–] reev@sh.itjust.works 2 points 2 weeks ago

Was thinking the same thing

[–] hmmm@sh.itjust.works 1 points 2 weeks ago (1 children)

Why are you surpried? It's actually possible. You just need so much computing power like around 64 GB ram and High End CPU to Pack and Unpack both.

[–] abfarid@startrek.website 7 points 2 weeks ago* (last edited 2 weeks ago)

Because modern media files are already compressed by default and have very little redundancy in them.