Good site for computer codecs?

I need to download codecs since windows 10 is not playing some older media files and clips. Miscosoft is not offering any on their website and has a warning not to download codecs from “unofficial sources” saying they can cause computer corruption. Can anyone recommend me a codec site or name to download that is safe?

I use the K-Lite Codec Pack, along with Media Player Classic.

Seconding K-Lite.

This is always one of the first programs I’ve installed on every new Windows computer I’ve got for the last 15 years or so. No more codec troubles.

I used to use CCCP, but they haven’t updated in years.

Another option that a lot of people use : VLC media player. It doesn’t use external codecs and will play almost anything with a no hassle installation.