High Efficiency Video Coding tiers and levels: Difference between revisions

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'''High Efficiency Video Coding tiers and levels''' are constraints that define a [[High Efficiency Video Coding]] (HEVC) bitstream in terms of maximum bit rate, maximum luma sample rate, maximum luma picture size, minimum compression ratio, maximum number of slices allowed, and maximum number of tiles allowed.<ref name=OverviewHEVCIEEE2012>{{cite news |title=Overview of the High Efficiency Video Coding (HEVC) Standard |author=G.J. Sullivan |author2=J.-R. Ohm |author3=W.-J. Han |author4=T. Wiegand |author4-link=Thomas Wiegand |publisher=IEEE Trans. on Circuits and Systems for Video Technology |url=http://iphome.hhi.de/wiegand/assets/pdfs/2012_12_IEEE-HEVC-Overview.pdf |format=PDF |date=2012-05-25 |accessdate=2012-09-14}}</ref><ref name=HEVCITURecommendationH265>{{cite news |title=H.265 : High efficiency video coding |publisher=ITU |url=http://www.itu.int/rec/T-REC-H.265|date=2013-06-07 |accessdate=2013-06-07}}</ref> Lower tiers are more constrained than higher tiers and lower levels are more constrained than higher levels.<ref name=OverviewHEVCIEEE2012/><ref name=HEVCITURecommendationH265/>

==Tiers==

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The HEVC standard defines thirteen levels.<ref name=OverviewHEVCIEEE2012/><ref name=HEVCITURecommendationH265/> A level is a set of constraints for a bitstream.<ref name=OverviewHEVCIEEE2012/><ref name=HEVCITURecommendationH265/> For levels below level 4 only the Main tier is allowed.<ref name=OverviewHEVCIEEE2012/><ref name=HEVCITURecommendationH265/> A decoder that conforms to a given tier/level is required to be capable of decoding all bitstreams that are encoded for that tier/level and for all lower tiers/levels.<ref name=OverviewHEVCIEEE2012/><ref name=HEVCITURecommendationH265/>

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|+ Tiers and levels with maximum property values<ref name=HEVCITURecommendationH265/><ref name=HEVCJuly2014R1013>{{cite news |title=Draft high efficiency video coding (HEVC) version 2, combined format range extensions (RExt), scalability (SHVC), and multi-view (MV-HEVC) extensions |author=Jill Boyce |author-link=Jill Boyce|author2=Jianle Chen |author3=Ying Chen |author4=David Flynn |author5=Miska M. Hannuksela |author6=Matteo Naccari |author7=Chris Rosewarne |author8=Karl Sharman |author9=Joel Sole |author10=Gary J. Sullivan |author11=Teruhiko Suzuki |author12=Gerhard Tech |author13=Ye-Kui Wang |author14=Krzysztof Wegner |author15=Yan Ye |publisher=JCT-VC |url=http://phenix.it-sudparis.eu/jct/doc_end_user/current_document.php?id=9466 |date=2014-07-11 |accessdate=2014-07-11}}</ref>

|-

!rowspan="2"| Level

!rowspan="2"| Max luma sample rate<br>(samples/s)

!rowspan="2"| Max luma picture size<br>(samples)

!colspan="2"| Max bit rate for Main<br>and Main 10 profiles (kbit1000bit/s){{Ref label|MaxBitRate|A|A}}

!colspan="2"| Max bit rate for Main 12<br>profile (kbit1000bit/s)

!colspan="2"| Max bit rate for Main 4:4:4 12<br>profile (kbit1000bit/s)

!colspan="2"| Max bit rate for Main 4:4:4 16<br>Intra profile (kbit1000bit/s)

!colspan="2"| Max bit rate for High Throughput<br>4:4:4 16 Intra<br>profile (kbit1000bit/s)

!rowspan="2"| Example picture resolution @<br>highest frame rate{{Ref label|MaxFrameRate|B|B}}<br>(MaxDpbSize{{Ref label|MaxDpbSize|C|C}}) <div class="mw-customtoggle-HEVCTiersLevels" style="color:#0B0080; cursor: pointer; border: 1px solid #aaa; border-radius: 10px; padding: 2px;">Click here to hide/show<br>additional examples</div>

!rowspan="2"| MinCR{{Ref label|MinCR|D|D}}

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!colspan="2"| Max number of tile{{Ref label|Tiles|F|F}}

|-

! Main tier

! High tier

! Main tier

! High tier

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| 1,152,000

| 2,880,000

| <div class="mw-collapsible" id="mw-customcollapsible-HEVCTiersLevels"> 1,280×720@68.0 (12) <br> 1,280×1,024@51.0 (8) <br> 1,920×1,080@32.0 (6) </div> 2,048×1,080@30.0 (6)

| 4

| rowspan="2" | 75

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| 1,920,000

| 4,800,000

| <div class="mw-collapsible" id="mw-customcollapsible-HEVCTiersLevels"> 1,280×720@136.0 (12) <br> 1,280×1,024@102.0 (8) <br> 1,920×1,080@64.0 (6) </div> 2,048×1,080@60.0 (6)

| 4

|-

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| 2,400,000

| 9,600,000

| <div class="mw-collapsible" id="mw-customcollapsible-HEVCTiersLevels"> 1,920×1,080@128.0 (16) <br> 2,048×1,024@127.5 (16) <br> 2,048×1,080@120.0 (16) <br> 2,048×1,536@85.0 (12) <br> 2,560×1,920@54.4 (8) <br> 3,672×1,536@46.8 (8) <br> 3,840×2,160@32.0 (6) </div> 4,096×2,160@30.0 (6)

| 6

| rowspan="3" | 200

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| 3,840,000

| 15,360,000

| <div class="mw-collapsible" id="mw-customcollapsible-HEVCTiersLevels"> 1,920×1,080@256.0 (16) <br> 2,048×1,024@255.0 (16) <br> 2,048×1,080@240.0 (16) <br> 2,048×1,536@170.0 (12) <br> 2,560×1,920@108.8 (8) <br> 3,672×1,536@93.7 (8) <br> 3,840×2,160@64.0 (6) </div> 4,096×2,160@60.0 (6)

| 8

|-

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| 5,760,000

| 23,040,000

| <div class="mw-collapsible" id="mw-customcollapsible-HEVCTiersLevels"> 1,920×1,080@300.0 (16) <br> 2,048×1,024@300.0 (16) <br> 2,048×1,080@300.0 (16) <br> 2,048×1,536@300.0 (12) <br> 2,560×1,920@217.6 (8) <br> 3,672×1,536@187.5 (8) <br> 3,840×2,160@128.0 (6) </div> 4,096×2,160@120.0 (6)

| 8

|-

Line 225 ⟶ 228:

| 5,760,000

| 23,040,000

| <div class="mw-collapsible" id="mw-customcollapsible-HEVCTiersLevels"> 3,840×2,160@128.0 (16) <br> 4,096×2,048@127.5 (16) <br> 4,096×2,160@120.0 (16) <br> 4,096×2,304@113.3 (12) <br> 7,680×4,320@32.0 (6) </div> 8,192×4,320@30.0 (6)

| 8

| rowspan="3" | 600

Line 243 ⟶ 246:

| 11,520,000

| 46,080,000

| <div class="mw-collapsible" id="mw-customcollapsible-HEVCTiersLevels"> 3,840×2,160@256.0 (16) <br> 4,096×2,048@255.0 (16) <br> 4,096×2,160@240.0 (16) <br> 4,096×2,304@226.6 (12) <br> 7,680×4,320@64.0 (6) </div> 8,192×4,320@60.0 (6)

| 8

|-

Line 258 ⟶ 261:

| 23,040,000

| 76,800,000

| <div class="mw-collapsible" id="mw-customcollapsible-HEVCTiersLevels"> 3,840×2,160@300.0 (16) <br> 4,096×2,048@300.0 (16) <br> 4,096×2,160@300.0 (16) <br> 4,096×2,304@300.0 (12) <br> 7,680×4,320@128.0 (6) </div> 8,192×4,320@120.0 (6)

| 6

|}

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==See also==

*[[High Efficiency Video Coding]]

*[[UHDTV]] - Digital video formats with resolutions of 4K (3840x21603840×2160) and 8K (7680x43207680×4320)

*[[Rec. 2020]] - ITU-R Recommendation for UHDTV

*[[H.264/MPEG-4 AVC]] - The predecessor video standard of HEVC

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[[Category:Computer file formats]]

[[Category:Graphics file formats]]

[[Category:IEC standards]]

[[Category:ISO standards]]

[[Category:ITU-T recommendations]]

[[Category:High-definition television]]

[[Category:Lossy compression algorithms]]

[[Category:MPEG]]

[[Category:Open standards covered by patents]]

[[Category:Ultra-high-definition television]]

[[Category:Video compression]]

[[Category:Video codecs]]

[[Category:Videotelephony]]

[[Category:ITU-T recommendations]]

[[Category:ITU-T H Series Recommendations]]

[[Category:H.26x]]

[[Category:ISO standards]]

[[Category:MPEG-H]]

[[Category:IEC standards]]