The GPEG2 codec is a MPEG-2 encoder that harnesses the computing power of GPU's
The DivX Codec extends DivX playback support to all popular media players.
allows your system to play QuickTime movie files (.mov) without quicktime.
x264 is a free library for encoding H264/AVC video streams.
K-Lite Codec Pack(klcodec) is a collection of codecs and related tools.
Playback is fully supported in x64 Media Center on all versions of Windows