The GPEG2 codec is a MPEG-2 encoder that harnesses the computing power of GPU's
YMPEG: Fast MPEG-1/2/VCD/SVCD/DVD/KVCD Codec
K-Lite Codec Pack(klcodec) is a collection of codecs and related tools.
general-purpose video codec aimed at resolutions from QCIF to HDTV
Disable/enable codec drivers and DirectShow filters.
Media Player Codec Pack is one of the best codec packs available.