What is the difference between MPEG-4 14496-2 and H.264?

MPEG-4 Part 2,MPEG-4 visual(Formally ISO/IEC 14496-2^{[1]) is a video compression technology developed by MPEG. it belongs to the MPEG-4 ISO/IEC standards. it is a discrete cosine transform compression standard, similar to previous standards such as MPEG-1 and MPEG-2. several Popular codecs including DivX, Xvid and Nero digital implement this standard.}

Note that MPEG-4 Part 10 defines a different format than MPEG-4 Part 2 and shocould not be confused with it. MPEG-4 Part 10 is commonly referred to as H. 264 or AVC, and was jointly developed by ITU-T and MPEG.