Always download the LATEST VERSION even if you see older "stable" recommendations elsewhere. Version 5.9.0 includes critical security patches for subtitle parsing that older builds lack.

is the most advanced and comprehensive media playback solution for Windows 64-bit operating systems. As the latest iteration of the world-renowned codec pack, this version focuses exclusively on native 64-bit playback environments, delivering unmatched compatibility, performance, and stability for all modern audio and video formats.

You need the very latest AV1 improvements or Windows on ARM support (not applicable here).