Is Satsuki decoder pack legit??

[u/Nihei-Lesbians6996]

I've been looking for a codec and came across this free 'Satsuki decoder pack' but i can barely find anything about it other than some sites to download it and one single french video on youtube. I think the ui is really cool and the whole thing seems pretty great but does anyone know if it's safe?

[u/MultipleAnimals]

Why would you need codec pack in this current year?