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JCTVC- J-154: Proposal for definition of levels in HEVC.

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Presentation on theme: "JCTVC- J-154: Proposal for definition of levels in HEVC."— Presentation transcript:

1 JCTVC- J-154: Proposal for definition of levels in HEVC

2 2 USNB comment on the Concept of Level Tiers The USNB recognizes that there is notable variation in the bit rate and buffer size constraints for different applications. It is therefore recommended that HEVC levels be defined with two tiers, where level nesting is supported within each tier, but levels between the tiers are not nested. With such a structure, support of the higher tier would imply support of the lower tier at the same or lower level. It is believed that this approach would be beneficial for product conformance and to enable support for higher resolution video without unnecessarily provisioning for greater resources. Confidential and Proprietary Comcast Information

3 3 Companies Cable Television Labs, Cisco, Broadcom, Motorola Mobility, Magnum Semiconductor, Harmonic, Comcast Labs, Rogers Communications, Time Warner Nested within each level tier Higher Resolution Video w/o greater resources Reduces Decoder Costs in Applications Create Compliant Decoders (Product Conformance)

4 4 Discussion Suggest names for level tiers (Consumer, High) Focus NOT whole table just two columns in table Suggest numbers for Max Bitrate and Max CPB size for each level Confidential and Proprietary Comcast Information

5 5 Consumer Tier Picture Resolution (information only) Max luma pixel 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) 1QCIF or below552,96036, ,686,400122,8801, ,588, ,960** 5, ,177,600983,04010, ,846,7202,228,224** 12, ,693,4402,228,224 20, ,386,8808,912,896 20, ,773,7608,912,896 40, ,069,547,5208,912,896 60, , ,000 86

6 6 Confidential and Proprietary Comcast Information High Tier Picture Resolution (information only) Max luma pixel 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) 1QCIF or below552,96036, ,686,400122,8801, ,588, ,960** 5, ,177,600983,04010, H^ 66,846,7202,228,224 48, ,693,4402,228,224 80, H 534,773,7608,912,896 80, ,773,7608,912, , ,069,547,5208,912, , H 240, ,000 86

7 7 Confidential and Proprietary Comcast Information

8 8 LevelMax 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) 1552,96036, ,686,400122,8801, ,762,560458,7525, ,177,600983,0409, ,668,8002,088,960 15, ,668,8002,088,960 30, ,693,4402,228,224 30, ,693,4402,228,224 50, ,386,8808,912,896 50, ,386,8808,912, , ,773,7608,912, , ,002,700,80033,423, , ,005,401,60033,423, , ,010,803,20033,423, ,000 66


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