The Windows 7 Codec Pack has been created to make installing major codec's, filters, plug-ins and splitters a breeze.
Play a huge variety of Audio/Video files.
Free of conflicts.
Cause minimal impact on system performance (Disk space used, registry entries and stability).
Compatible in full with Microsoft Windows 7.

FFDShow MPEG-4 Video Decoder is a DirectShow decoding filter for decompressing DIVX movies, picture postprocessing, and show subtitles. It uses libavcodec from ffmpeg project or for video decompression (it can use xvid.dll installed with xvid codec too), postprocessing code from mplayer to enhance visual quality of low bitrate movies, and is based on original DirectShow filter from XviD, which is GPL´ed educational implementation of MPEG4 encoder.

Microsoft DirectX is a group of technologies designed to make Windows-based computers an ideal platform for running and displaying applications rich in multimedia elements such as full-color graphics, video, 3D animation, and rich audio. DirectX 9.0c includes support for Pixel Shader and Vertex Shader 3.0, along with many new features across all technologies, which can be accessed by applications using the DirectX 9.0 APIs.

K-Lite Codec Pack is a collection of codecs and related tools. Codec is short for Compressor-Decompressor. Codecs are needed for encoding and decoding (playing) audio and video. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your movie files. With the K-Lite Codec Pack you should be able to play all the popular movie formats and even some rare formats.

K-Lite Codec Pack is a collection of codecs and related tools. Codec is short for Compressor-Decompressor. Codecs are needed for encoding and decoding (playing) audio and video. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your movie files. With the K-Lite Codec Pack you should be able to play all the popular movie formats and even some rare formats.