Original sentence: xx versions refers to a hacked version of the Microsoft MPEG-4 Version 3 video codec (MPEG-4v3, Microsoft internal numbering scheme, unrelated to MPEG-4 parts)
Edited sentence: xx versions refers to a hacked version of the Microsoft MPEG-4 Version 3 video codec (MPEG-4v3, Microsoft internal numbering scheme, unrelated to MPEG-4 parts) from Windows Media Encoder