The Joint Collaborative Team on Video Coding (jct-vc) of itu-t wp3/16 and iso/iec jtc 1/ sc 29/ wg 11 held its tenth meeting during 11-20 July 2012 at the City Conference Centre (ccc), a k. a

JCTVC-J0357 AHG12: 4:2:2/4:4:4 chroma format extension for HEVC Version 2 [K. Kawamura, T. Yoshino, S. Naito (KDDI Corp.)]

This contribution proposes an extension scheme for supporting 4:2:2/4:4:4 chroma formats that is part of HEVC Version 2. The support is reportedly achieved by minimum changes from the current specification. The modified HM7.0 software, in which all video coding tools support extended chroma formats, is provided.

Similar to J0191 in spirit. Intra prediction was approached somewhat differently. RDO was adjusted in the intra handling design to account for chroma in addition to luma.

Compression test results were provided in relation to JM 18.3.

See additional notes in discussion of J0191.