1、Information technology MPEG systems technologies Part 11: Energy-efficient media consumption (green metadata) AMENDMENT 1: Carriage of green metadata in an HEVC SEI message Technologies de linformation Technologies des systmes MPEG Partie 11: Consommation des supports conergtiques (mtadonnes vertes)
2、 AMENDEMENT 1: Transport des mtadonnes vertes dans un message HEVC SEI INTERNATIONAL STANDARD ISO/IEC 23001-11 First edition 2015-07-15 Reference number ISO/IEC 23001-11:2015/Amd.1:2016(E) AMENDMENT 1 2016-08-01 ISO/IEC 2016 ii ISO/IEC 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO/IEC 20
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5、md.1:2016(E) ISO/IEC 23001-11:2015/Amd.1:2016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each
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8、ypes of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not
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10、rmation given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformit y assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical
11、Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html. Amendment 1 to ISO/IEC 23001-11:2015 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. ISO/IEC 2016 All ri
12、ghts reserved iii Information technology MPEG systems technologies Part 11: Energy-efficient media consumption (green metadata) AMENDMENT 1: Carriage of green metadata in an HEVC SEI message Page 1, Normative references Add the following reference: ISO/IEC 23008-2, Information technology High effici
13、ency coding and media delivery in heterogeneous environments Part 2: High efficiency video coding Page 5, Symbols and abbreviated terms Replace the term AVC with the following: AVC Advanced Video Coding - ISO/IEC 14496-10 Add the following term: HEVC High Efficiency Video Coding - ISO/IEC 23008-2 Pa
14、ge 13, 6.2.2, second table Replace the second table with the following: Size (bits) Descriptor num_quality_levels 4 unsigned integer lower_bound 8 unsigned integer if (lower_bound 0)upper_bound 8 unsigned integerrgb_component_for_infinite_psnr 8 unsigned integer for (i = 1; i = num_quality_levels; i
15、+) max_rgb_componenti 8 unsigned integerscaled_psnr_rgbi 8 unsigned integer ISO/IEC 23001-11:2015/Amd.1:2016(E) ISO 2016 All rights reserved 1 ISO/IEC 23001-11:2015/Amd.1:2016(E) Page 18, Annex A Replace the text in Annex A with the following text: A.1 Green Metadata SEI message syntax and semantics
16、 carried in AVC NAL units Clause A.1 describes the payload syntax and semantics if payloadType 56 appears in an AVC NAL unit with nal_unit_type set to 6. A.1.1 Syntax C Descriptor green_metadata( payload_size ) green_metadata_type 5555 u(8) if (green_metadata_type = 0) period_type 5 u(8)if ( period_
17、type = 2 )num_seconds 5 u(16)else if ( period_type = 3 )num_pictures 5 u(16)percent_non_zero_macroblocks 5 u(8)percent_intra_coded_macroblocks 5 u(8)percent_six_tap_filterings 5 u(8)percent_alpha_point_deblocking_instances 5 u(8) else if ( green_metadata_type = 1) xsd_metric_type 5 u(8)xsd_metric_va
18、lue 5 u(16) A.1.2 Semantics green_metadata_type specifies the type of metadata that is present in the SEI message. If green_ metadata_type is 0, then complexity metrics are present. Otherwise, if green_metadata_type is 1, then metadata enabling quality recovery after low-power encoding is present. O
19、ther values of green_ metadata_type are reserved for future use by ISO/IEC. A.2 Green Metadata SEI message syntax and semantics carried in HEVC NAL units Clause A.2 describes the payload syntax and semantics if payloadType 56 appears in an HEVC NAL unit with nal_unit_type set to PREFIX_SEI_NUT. A.2.
20、1 Syntax Descriptor green_metadata( payload_size ) green_metadata_type u(8) if ( green_metadata_type = 1 ) xsd_metric_type u(8)xsd_metric_value u(16) 2 ISO 2016 All rights reserved ISO/IEC 23001-11:2015/Amd.1:2016(E) A.2.2 Semantics green_metadata_type specifies the type of metadata that is present
21、in the SEI message. If green_ metadata_type is 1, then metadata enabling quality recovery after low-power encoding is present. Other values of green_metadata_type are reserved for future use by ISO/IEC. ISO 2016 All rights reserved 3 ISO/IEC 23001-11:2015/Amd.1:2016(E) ISO/IEC 2016 All rights reserved ICS 35.040 Price based on 3 pages
