Version 2.0.4 and its successors typically included a suite of essential DirectShow filters and a dedicated player:
Essential for high-quality audio like Dolby Digital. Codec pack xp v 2.0.4 by mem
A versatile decoder for MPEG-4 (DivX/Xvid) and other video types. Version 2
About X Codec Pack - History, Mission & 28 Million Downloads In the mid-2000s, Windows XP users often faced
A lightweight player that looked like the old Windows Media Player 6.4 but could play almost anything.
In the mid-2000s, Windows XP users often faced a "codec chaos" where common media players failed to open popular video formats like MKV or AVI. To solve this, developers bundled necessary decoding filters into easy-to-install packages, with being a prominent early release in that era. The Role of Codec Pack XP
Components like the Matroska Splitter and AVI Splitter allowed the system to understand different file containers. A Digital Legacy