Joint Collaborative Team on Video Coding (jct-vc)

1.11Liaison activity

The JCT-VC did not send or receive formal liaison communications at this meeting.

1.12Opening remarks

The status of HEVC version 1 in ISO/IEC and ITU-T was noted. In ITU-T, the text was approved on 2013-04-13 and published as Rec. H.265 on 2013-06-07. The FDIS 23008-2 ballot period had ended on 2013-07-14, and formal publication was expected to follow shortly.

The HEVC conformance testing and reference software specification had been submitted as ISO/IEC CD 23008-5, but had been planned at the preceding meeting to be split into two separate parts for software (23008-5) and conformance (23008-8) at the DIS stage, which was reflected by issuing an ISO/IEC CD ballot for 23008-5 at the preceding meeting. The DIS ballot text was planned to be produced at this meeting.

ISO/IEC 23008-8 conformance ballot results were reported in the WG 11 document m29645.

ISO/IEC 23008-5 software ballot results were reported in the WG 11 document m29941.

The range extensions draft 2 had been submitted as ISO/IEC 23008-2/PDAM1. The ballot closing date was 2013-07-07, and ballot results were reported in the WG 11 document m29644.

It was noted that in the most-recently-established voting process in ISO/IEC, a "No" vote has a different status than it previously did for the DIS / DAM ballot stage. WG 11 NBs should make sure to be aware of the implications of their votes, and may wish to consider voting "Yes with comments" in some circumstances in which they would previously have been inclined to vote "No with comments".

The goals of the meeting were reviewed. These included progress of work on HEVC extensions, conformance, and reference software ("Study of", in ISO/IEC). It was noted that plans for verification testing of HEVC version 1 should be established.

1.13Scheduling of discussions

Scheduling: Generally meeting time was scheduled during 0900 – 2000, with coffee and lunch breaks as convenient. The meeting had been announced to start with topics of SHVC HLS on the first day, SHVC CE work and related contributions starting on the second day, and RExt and other topics starting on the third day. Some particular scheduling notes are shown below, although not necessarily 100% accurate:

• 
  First day (Thu. 25 July): 0900–2000 (approximately), with plenary in the morning and Tracks A and B in the afternoon (for general HLS and SVC-specific HLS)
  
• 
  Second day (Fri. 26 July): 0900–2000 (approximately), start with plenary relating to AHGs for SVC CEs, then Tracks A and B (and BoG on HLS), with one track working on SCEs and the other on HLS.
  
• 
  Third day (Sat. 27 July): 0900-1300 J. B. BoG & Track B (A. Segall), 1200-1315 Track A (GJS, AHGs and RExt), p.m. Track B (A. Segall) & ESS BoG., 14:45 Track A (GJS).
  
• 
  Fourth day (Sun 28 July): 0900 Track B (A. Segall)
  
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  Fifth day (Mon 29 July): Morning MPEG plenary,
  
  • 
    Morning MPEG plenary
    
  • 
    1400: Continuation
    
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  Sixth day (Tue 30 July):
  
• 
  Seventh day (Wed 31 July):
  
  • 
    Morning MPEG plenary
    
  • 
    1130: Continuation
    
  • 
    Stopping time 1700 (for social event)
    
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  Eighth day (Thu 1 Aug):
  
• 
  Ninth day (Fri 2 Aug):
  
  • 
    0800 Morning wrap-up
    
  • 
    1300 End
    

1.14Contribution topic overview

The approximate subject categories and quantity of contributions per category for the meeting were summarized and categorized into "tracks" (A, B, or P) for "parallel session A", "parallel session B", or "Plenary" review, as follows. Discussions on topics categorized as "Track A" were primarily chaired by Gary Sullivan, and discussions on topic categorized as "Track B" were primarily chaired by Jens-Rainer Ohm. Some plenary sessions were chaired by both co-chairmen, and others were chaired by Gary Sullivan. Substitute chairs and break-out-group coordinators were sometimes selected for particular topics as noted. (Note: allocation to tracks were subject to changes.)

• 
  AHG reports (21) Track P (section 2)
  
• 
  Communication to and by parent bodies (0) Track P (section Error: Reference source not found)
  
• 
  Conformance testing development (1) Track P (section 3.1)
  
• 
  Version 1 bug reports and cleanup (4) Track P (section 3.2)
  
• 
  Coding performance, implementation, and design analysis (3) Track P (section 3.3Error: Reference source not found)
  
• 
  Profile and level definitions (4) Track P (section 3.4)
  
• 
  HEVC and RExt use cases (1) Track P (section 3.5)
  
• 
  Source video test material (2) Track P (section 3.6)
  
• 
  SHVC CE1: Support for additional resampling phase shifts (9) Track B (section 4.1)
  
• 
  SHVC CE2: Combined inter-layer syntax prediction and motion data compression (15) Track B (section 4.2)
  
• 
  SHVC CE3: Inter-layer filtering (15) Track B (section 4.3)
  
• 
  RExt CE1: Inter-component decorrelation (6) Track A (section 5.1)
  
• 
  RExt CE2: Prediction and coding techniques for transform skip blocks (31) Track A (section 5.2)
  BoG N0388 on combination of tools in RCE2 (J. Sole)
  
• 
  RExt CE3: Intra coding methods for screen content (9) Track A (section 5.3)
  
• 
  Non-CE RExt (56 CE related, 30 other) Track A (section 6.1)
  BoG N0384 on non-RCE2 contributions (R. Joshi, R. Cohen)
  
• 
  Non-CE SHVC (20 CE related, 30 other) Track B (section 6.2)
  BoG N0387 on color gamut scalability (A. Segall)
  BoG N0375 on arbitrary scalability ratios (E. Francois)
  
• 
  High-level syntax in RExt & single layer (4) Track A (section 6.3)
  
• 
  High-level syntax in SHVC and 3D extensions (74) BoG | joint with JCT-3V (section 6.4)
  BoG N0373 on alignment, etc. (J. Boyce)
  
• 
  High-level syntax in SHVC (10) BoG | Track A (section 6.5)
  J-BoG N0374 on SHVC/MV-HEVC HLS topics (J. Boyce)
  
• 
  SEI messages (15) BoG N0374 | Track A (section 6.6)
  
• 
  Non-normative (3) Track A (section 6.7)
  
• 
  Withdrawn and unclear category (0) (section 6.8)
  
• 
  Plenary discussions and BoG reports (section 7)
  
• 
  Outputs & planning: AHG & CE plans, Conformance, Reference software, Verification testing, Chroma format, CTC. (sections 8, 9, and 10)
  

NOTE – The number of contributions in each category, as shown in parenthesis above, may not be 100% precise.

Overall approximate contribution allocations: Track P: 36; Track A: 108; Track B: 54; HLS J-BoG: 74.