MS-MPEG4v2 Codec 1.0 for Mac is free to download from our application library. MS-MPEG4v2 Codec for Mac lies within Audio & Video Tools, more precisely General. The actual developer of this free software for Mac is Henry Mason.
From the developer:
MS-MPEG4v2 Codec is a codec based almost exclusively on FFMpeg and DivOSX. You can find them at http://ffmpeg.sf.net/ and http://mpeg4.jamby.net/, respectively. This codec plays (flawlessly, as far as I know) video encoded in the MS-MPEG4v2 codec. To install, put it in /Library/Quicktime. It will not function on Mac OS 9 or earlier. If you are trying to play an AVI file with MP3 audio, and you probably are, you must go to http://doctor.3ivx.
You may want to check out more software for Mac, such as Ogg Vorbis Codec Help, codecity or TC Console, which might be related to MS-MPEG4v2 Codec.