MS-MPEG4v1 for Mac OS X
screenshot of codec in action
Download Codec (480KB)
Links:
DivX Tool - Needed to change the FourCC of many MS-MPEG4v1 AVIs.
DivX Doctor II - Needed for reliable audio playback when using MP3 audio.
FFmpeg - They made the decoder.
DivOSX - They made 99.9% of Quicktime interface.
Microsoft - They made the codec.
Henry Mason - That's me.