K-Lite Codec Pack is the most popular package with a set of different codecs, filters and utilities, designed to watch videos and listen to music on a personal computer. It can be used to play virtually any media file on a PC, including the most exotic ones.
And K-Lite Codec Pack Update is a special update for this package. Moreover, these updates are suitable for all codec package assemblies - Basic, Standard, Corporate, Full and Mega. Simply install this service pack on top of the codecs you already installed and update them to the current version.
Although codecs are updated quite often, Updates are still released more often. And those users who always need the latest codecs can download and install the update without waiting for a new release of the full package.