In the last MPEG Maui meeting, MPEG issued a Call for Evidence (CfE) on High-performance Video Coding (HVC). Nine responses to the CfE are received in this meeting (89th MPEG London). Those reponse proposals adopt typical coding tools in KTA, such as adaptive loop filter (ALF), extended macroblock size (EMS), larger transform size (LTS), internal bit depth increasing (IBDI), adaptive quantization matrix selection (AQMS), and other tools, such as modified intra prediction, modified de-block filter, decoder-side motion vector derviation (DMVD).

The objective experimental results show that 20% average bit reduction is achieved compared with H.264/AVC High Profile for all classes of test video sequences (Class A: 19%, Class B:25%, Class C:22%, Class D: 15% bit reductions, respectively). Subjective evalution is also conducted during this meeting. The purpose of subjective evaluation is not ranking of response proposals, but identifying examples that give best evidence and assessing whether the evidence is large enough. The subjective evalution results also show that there is positive evidence to support the availability of suitable technology to justify the start for a new standardization activity.

Therefore, MPEG plans to move forward toward quickly issuing a formal Call for Proposals (CfP) on HVC (as soon as October 2009). The timeline of CfP on HVC:

• July 20, 2009: Availability of test materials defined in Draft CfP
• August 15, 2009: Availability of preliminary anchors
• October 27, 2009: Deadline for Pre-registration (mandatory)
• October 31, 2009: Final Call for Proposals (public)
• November 15, 2009: Formal registration
• December 15, 2009: Coded test material available at the test site
• January 1, 2010: Subjective assessment starts
• January 11, 2010: Registration of documents describing the proposals with MPEG video chair
• January 12, 2010: Submission of document to MPEG Video chair
• January 16, 2010: Report of the subjective test results

本文来自: Current Status of HVC (High-performance Video Coding) in MPEG