ns, clarifications, consistency improvements and formatting improvements drafted in response to accumulated errata reports collected since publication of the 2nd edition (dated 2005-03, which included a Cor.1 approved 2005-09). The ITU-TH.264 edition published in 2009-05 contained enhancement extensions to support multiview video coding (MVC), specification of a "Constrained Baseline Profile", and some miscellaneous corrections and clarifications. The ITU-TH.264 edition published in 2010-03 contained the specification of a new profile (the Stereo High profile) for two-view video coding with support of interlaced coding tools, the specification a new SEI message (the frame packing arrangement SEI message), and some miscellaneous corrections and clarifications. Rec. ITU-T H.264 (01/2012) The ITU-T H.264 edition approved in 2011-06 contained the specification of a new level (Level 5.2) supporting higher processing rates in terms of maximum macroblocks per second, a new profile (the Progressive High profile) to enable implementation of decoders supporting only the frame coding tools of the previously specified High profile, and includes miscellaneous corrections and clarifications. This edition of Rec. ITU-T H.264 approved in 2012-01 contains the specification of three additional profiles intended primarily for communication applications (the Constrained High, Scalable Constrained Baseline, and Scalable Constrained High profiles). History Edition Recommendation Approval Study Group ITU-T H.264 2003-05-30 ITU-T H.264 (2003) Cor. 1 2004-05-07 ITU-T H.264 2005-03-01 ITU-TH.264 (2005) Cor. 1 2005-09-13 ITU-T H.264 (2005) Amd. 1 2006-06-13 ITU-T H.264 (2005) Amd. 2 2007-04-06 ITU-T H.264 2007-11-22 ITU-T H.264 (2007) Cor. 1 2009-01-13 ITU-T H.264 2009-03-16 ITU-T H.264 2010-03-09 ITU-T H.264 2011-06-29 ITU-T H.264 2012-01-13 Rec. ITU-T H.264 (01/2012) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technolog