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

Level	Max luma sample rate MaxLumaPR (samples/sec)	Max luma picture size MaxLumaFS (samples)	Max bit rate MaxBR (1000 bits/s)	Min Compression Ratio MinCR	MaxDpbSize (picture storage buffers)
Max CPB size (1000 bits)
4	62,668,800 66,846,720	2,088,960 2,228,224	15,000 12, 30	4	6	15,000 12, 30
4.1	62,668,800	2,088,960	30,000	4	6	30,000
4.2 4.1	133,693,440	2,228,224	30,000 20, 50	4	6	30,000 20, 50
4.3	133,693,440	2,228,224	50,000	4	6	50,000
5	267,386,880	8,912,896	50,000 25, 100	6	6	50,000 25, 100
5.1	267,386,880	8,912,896	100,000	8	6	100,000
5.2 5.1	534,773,760	8,912,896	150,000 40, 160	8	6	150,000 40, 160
5.2	1,069,547,520	8,912,896	60, 240	8	6	60, 240
6	1,002,700,800 1,069,547,520	33,423,360	300,000 60, 240	8	6	300,000 60, 240
6.1	2,005,401,600	33,423,360	500,000 120, 480	8	6	500,000 120, 480
6.2	4,010,803,200	33,423,360	800,000 240, 800	6	6	800,000 240, 800

Note: Tile constraints would need to reflect any changes in picture size in the same manner as was done with the prior values. (There was a formula used.) And consequences are to be reflected in Table A.4.
JCTVC-J0088 AHG4: Enable parallel decoding with tiles [M. Zhou (TI)]

Non-nesting. No action.

JCTVC-J0037 On still picture profile [K. Ugur, J. Lainema, M. Hannuksela (Nokia)]

Discusses a potential still picture coding profile.

5.5.5DPB size (6)

It was agreed to allow the number of DPB picture buffers to increase as the picture size decreases within a level – in some fashion, but not as flexibly as in AVC.

Suggestion in spirit of J0210 and J0199 and J0283:

• 
  half picture size – twice the buffers
  
• 
  quarter picture size – four times the number of buffers
  
• 
  maximum of N including the current picture
  

• 
  N = 16, but RefPicSTCurrBefore + RefPicSTCurrAfter + RefPicLTCurr <= 8.
  

Suggestion in spirit of J0496:

• 
  3/4 picture size – 4/3 the number of buffers
  
• 
  2/3 picture size – 3/2 the number of buffers
  
• 
  half picture size – twice the buffers
  
• 
  quarter picture size – four times the number of buffers
  
• 
  maximum of N including the current picture
  
• 
  N = 16, but RefPicSTCurrBefore + RefPicSTCurrAfter + RefPicLTCurr <= 8.
  

Decision: 2nd scheme above.

JCTVC-J0111 On DPB size [R. L. Joshi, A. K. Ramasubramonian, Y.-K. Wang (Qualcomm)]
JCTVC-J0163 On DPBsize reduction [S. Lu, T. Suzuki (Sony)]
JCTVC-J0417 Cross-check report for On DPBsize reduction (JCTVC-J0163) [H. Sasai, T. Nishi (Panasonic)] [late]
JCTVC-J0199 Comments on DPB Size [Thomas Davies, Arild Fuldseth (Cisco)]

Would likeThe contribution requests to get be able to use up to 16 reference pictures somehow.

JCTVC-J0564 Cross-check of JCTVC-J0199: Comments on DPB size [D. Flynn (BBC)] [late]
JCTVC-J0210 MaxDpbSize setting based on the picture size [A.Fujibayashi, T.K.Tan (NTT Docomo)]
JCTVC-J0283 Field Coding and MaxDpbSize constraints [D. Flynn, A. Gabriellini, M. Mrak, M. Naccari (BBC)]
JCTVC-J0561 Mental cross-check of JCTVC-J0283 [T.Davies (Cisco)] [late]
JCTVC-J0367 On level considerations for interlaced content coding [Jérôme Viéron, Pierre Larbier, Jean-Marc Thiesse (Ateme)]
JCTVC-J0496 Variable MaxDpbSize based on maximum picture size and maximum number of reorder pictures [A. Rodriguez, A. K. Katti, H-Y Hwang (??)] [late]

Proposes discrete steps of increases of number of reference pictures as the picture size decreases.

JCTVC-J0554 Mental cross-check of Variable MaxDpbSize based on maximum picture size and maximum number of reorder pictures (JCTVC-J0496) [Lowell Winger (??)] [late]

5.5.6Other limits (4)

JCTVC-J0151 Study on HEVC profiles and levels [T. Suzuki, M. Haque, A. Tabatabai (Sony)]

Proposes to change the current definition of profile and level.

• 
  DPB size (decrease, but perhaps support more pictures when pic size gets small)
  
• 
  Num_ref_idx (decrease limit on ref pic list length – e.g. 8)
  
• 
  No constraint on max bit/bin at LCU level (doc J0442 summarizes, J0059 and J0082 propose to have a constraint)
  
• 
  2 table level definitions (i.e. "tiers") – discussed below.
  

Remember to also talk about reference picture list lengths. Resolved – see BoG disposition notes.
JCTVC-J0335 Explicit Specification of Bounds on Syntax Elements [B. Heng, T. Hellman, W. Wan (Broadcom)]

Not really a level proposal.

JCTVC-J0133 raises the same/similar issue.

JCTVC-J0225 is also related.

JCTVC-J0059 Suggested constraint on number of bits/bins per LCU [K. Chono (NEC)]
JCTVC-J0080 On number of slices per picture limit [M. Zhou (TI)]
JCTVC-J0082 On number of bits per LCU limit [M. Zhou, V. Sze (TI)]
JCTVC-J0442 Summary of discussion and input contributions on constraint on number of bits/bins per LCU [??] [late]