Use the VLC Media Player or MPC-HC. These players handle .mkv files and the x264 codec natively without needing extra codec packs.
This indicates the file was losslessly ripped from a streaming service (like Paramount+ ). It typically features better quality than a "WEBRip" because no re-encoding occurred during the initial capture.
The movie is an original production available on the Paramount+ official site.
The standard H.264 video compression format. It is highly compatible with almost all modern media players and smart TVs.