REALmagic MPEG-4 Video Codec is a Video for Windows (VfW) tool that will enable you to create your own videos using VfW applications such as Adobe Premiere and enjoy the advantages of the MPEG-4 format.
Compared to MPEG-2, this more recent compression technology reduces file sizes and makes it possible to store up to 2 hours of video data on a usual CD.
The main features of this codec are B-frames support in order to reduce file sizes, VBR and CBR operation support, working with resolutions of up to 720 x 576, and providing Adaptive Quantization and Intelligent Deinterlacing for optimized video quality, respectively interlaced to progressive scan conversion.
A drawback of this software is the lack of uninstalling options.
http://www.free-codecs.com/