XP and Vista Codecs Package is a set of filters and codecs that will allow you to view your favourite video and audio files. Unlike some of the codecs, XP and Vista Codecs Package will give users the ability to choose what is installed using the public redistributable and after an unattended install, you can select to remove specific portions without removing the entire package.
With XP and Vista Codecs Package installed you will be able to use any media player to play DVD's, movies and video clips such as quicktime, realmedia, avi, mpeg, flv, swf, wmv, etc. Streaming video is supported in web browsers. By default you shouldn't need to make any adjustments to enjoy your media content immediately.
You must uninstall your previous version. Do not upgrade with this release!