The GPEG2 codec is a MPEG-2 encoder that harnesses the computing power of GPU's
Provided concerning native codec support in Windows Media.
Avid supplies a downloadable installer that includes the Avid QuickTime codecs.
Adaptec DVSoft codec is an interesting codec offered by Adaptecadaptec aic-7892
Komisar's unofficial x264 VFW Codec, based on x264 builds
MediaCoder is a free universal audio/video batch transcoder.