>>434589411. I cropped and resized your 2560x1440 image. You ought to be doing the same.
https://litter.catbox.moe/eimzjc.png You're getting black output because the thing is running out of fucking RAM.
2. It worked just fine in this case. I haven't had luck with it working because I've tried it on shit like contrasty movie screenshots "my dear twat with questionable taste", not because I "couldn't figure it out"
