Witness the development of H.265
Category : H.265/HEVC

Delay the Submission of Responses to CfP on HVC, or not?

2009-10-26 H.265/HEVC 4 Comments Views(3,852)

In the beginning plenary of 90th MPEG meeting on Oct. 26, several national bodies, such as USNB, FRNB, SGNB, and CNNB, recommended to delay the submission date of responses to the Call for Proposal (CfP) on HVC from December 2009 to March 2010. The major concerns from the national bodies are:

  • the need of sufficient time to finalize the establishment of collaborative team with VCEG and only then issue a joint CfP;
  • the need of sufficient time to determine the cost of the subjective evaluation tests after the CfP is finalized;
  • the need of sufficient time to refine the CfP test conditions/materials and only then generate the proposed bitstreams;
  • the need of sufficient time to define the complexity evaluation criterion in an objective method for quantitative analysis,
  • the need of sufficient time to perform the subjective evaluation tests but currently planned in the year-end holidays period.

This recommendation aroused controversy between the delegates of national bodies and the convenor,[......]

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Future Collaboration between MPEG and VCEG

2009-07-03 H.265/HEVC 3 Comments Views(8,252)

As well-known, JVT (a joint video team between MPEG and VCEG) has achieved great success in the standardization of the state-of-the-art video compression, including H.264/AVC, SVC, and MVC. The academic and industry want to continue the success in the collaboration between MPEG and VCEG. Some proposals from VCEG suggest the H.NGVC (or H.265) standardization should be collaboratively done with MPEG to produce a significantly advanced video coding standard and to avoid producing multiple similar standards, which confuse the market. VCEG agrees that conducting this work jointly with MPEG will be beneficial to avoid duplication of efforts in this area. Therefore, in this MPEG London meeting, a joint meeting between MPEG and VCEG discusses the future collaboration. However, the collaboration method arouses a lot of controversy, focusing on which one of the following practical experiences should be chosen:

  • Practical experience 1: MPEG-2, a integrate part of video subgroup when under WG 11 a[......]

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Current Status of HVC (High-Performance Video Coding) in MPEG

2009-07-03 H.265/HEVC 11 Comments Views(20,218)

In the last MPEG 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), as well as new 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 identifying examples that give the best evidence and assessing whether the evidence is large enough. The s[......]

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The Preliminary Requirements for NGVC

2009-04-15 H.265/HEVC 2 Comments Views(6,402)

In the 37th VCEG meeting,  held in Yokohama on April 15-18, a potential “NGVC” project standing for next-generation video coding was discussed, which could mean either an extension of H.264/AVC or a new standard, depending on which form of standardization is determined to be appropriate for the technology design.
The preliminary requirements of the NGVC project focus on the following areas.
1. Coding efficiency:

  • NGVC should be capable of providing a bit rate reduction of 50% at the same subjective quality

2. Complexity:

  • NGVC should be capable of operating with a complexity ranging from 50% to 3 times H.264/AVC High Profile.
  • When operated at a complexity of 50% compared to H.264/AVC High Profile, NGVC should provide a 25% bit rate savings compared to H.264/MPEG-4 AVC High Profile at equivalent subjective quality.

3. Applications:

  • Low-delay interactive video communications
  • Surveillance
  • Streaming
  • Broadcast
  • Digital cinema and large-screen digital imagery
  • Mobile video enter[......]

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