ISO/IEC 13818-1:2015/Amd 2:2016
(Amendment)Information technology — Generic coding of moving pictures and associated audio information — Part 1: Systems — Amendment 2: Carriage of layered HEVC
Information technology — Generic coding of moving pictures and associated audio information — Part 1: Systems — Amendment 2: Carriage of layered HEVC
Technologies de l'information — Codage générique des images animées et du son associé — Partie 1: Systèmes — Amendement 2: Transport du codage vidéo à haute efficacité en couches
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Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 13818-1
Fifth edition
2015-07-01
AMENDMENT 2
2016-07-15
Information technology — Generic coding
of moving pictures and associated audio
information —
Part 1:
Systems
AMENDMENT 2: Carriage of layered HEVC
Technologies de l'information — Codage générique des images
animées et du son associé —
Partie 1: Systèmes
AMENDEMENT 2: Transport du codage vidéo à haute efficacité en
couches
Reference number
ISO/IEC 13818-1:2015/Amd.2:2016(E)
©
ISO/IEC 2016
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ISO/IEC 13818-1:2015/Amd.2:2016(E)
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ii © ISO/IEC 2016 – All rights reserved
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ISO/IEC 13818-1:2015/Amd.2:2016(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 3 to ISO/IEC 13818-1:2015 was prepared by Joint Technical Committee ISO/IEC JTC 1,
Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia
information, in collaboration with ITU-T. The identical text is published as ITU-T H.222.0 (12/2015).
© ISO/IEC 2016 – All rights reserved iii
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ISO/IEC 13818-1:2015/Amd.2:2016 (E)
INTERNATIONAL STANDARD
ITU-T RECOMMENDATION
Information technology – Generic coding of moving pictures and associated audio
information: Systems
Amendment 2
Carriage of layered HEVC
1) Clause 1.2.2
Replace:
– Recommendation ITU-T H.264 (2013), Advanced video coding for generic audiovisual services.
ISO/IEC 14496-10:2013, Information technology – Coding of audio-visual objects – Part 10: Advanced
video coding.
– Recommendation ITU-T H.265 (2013), High efficiency video coding.
ISO/IEC 23008-2:2013, Information technology – High efficiency coding and media delivery in
heterogeneous environments – Part 2: High efficiency video coding.
with:
– Recommendation ITU-T H.264 (2014), Advanced video coding for generic audiovisual services.
ISO/IEC 14496-10:2014, Information technology – Coding of audio-visual objects – Part 10: Advanced
video coding.
– Recommendation ITU-T H.265 (2015), High efficiency video coding.
ISO/IEC 23008-2:2015, Information technology – High efficiency coding and media delivery in
heterogeneous environments – Part 2: High efficiency video coding.
2) Clauses 2.1.95, 2.1.96, 2.1.106 and 2.1.107
Replace clause 2.1.95 with:
2.1.95 HEVC video stream: Byte stream as specified in Rec. ITU-T H.265 | ISO/IEC 23008-2 Annex B.
NOTE – This term represents either a byte stream as specified in Annex B of the first version of Rec. ITU-T H.265 |
ISO/IEC 23008-2 or an HEVC layered video sub-bitstream.
Replace clause 2.1.96 with:
2.1.96 HEVC access unit: An access unit as defined in Annex F of Rec. ITU-T H.265 | ISO/IEC 23008-2 with the
constraints specified in 2.17.1.
Replace clause 2.1.106 with:
2.1.106 HEVC temporal video sub-bitstream: An HEVC video sub-bitstream that contains all VCL NAL units and
associated non-VCL NAL units of the temporal sub-layer of the same layer, as specified in Rec. ITU-T H.265 |
ISO/IEC 23008-2, associated with TemporalId equal to 0 and which may additionally contain all VCL NAL units and
associated non-VCL NAL units of all temporal sub-layers of the same layer associated with a contiguous range of
TemporalId from 1 to a value equal to or smaller than sps_max_sub_layers_minus1 included in the active sequence
parameter set, as specified in Rec. ITU-T H.265 | ISO/IEC 23008-2.
Replace clause 2.1.107 with:
2.1.107 HEVC temporal video subset: An HEVC video sub-bitstream that contains all VCL NAL units and the
associated non-VCL NAL units of one or more temporal sub-layers of the same layer, as specified in Rec. ITU-T H.265
| ISO/IEC 23008-2, with each temporal sub-layer not being present in the corresponding HEVC temporal video sub-
bitstream and TemporalId associated with each temporal sub-layer forming a contiguous range of values that is equal to
Rec. ITU-T H.222.0 (2014)/Amd.2 (12/2015) 1
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ISO/IEC 13818-1:2015/Amd.2:2016 (E)
or smaller than sps_max_sub_layers_minus1 included in the active sequence parameter set, as specified in
Rec. ITU-T H.265 | ISO/IEC 23008-2.
NOTE – According to the constraints for the transport of HEVC specified in 2.17.1, each temporal sub-layer of an HEVC video
stream is present either in the HEVC temporal video sub-bitstream or in exactly one HEVC temporal video subset which is carried
in a set of elementary streams that are associated by hierarchy descriptors or HEVC hierarchy extension descriptors. This prevents
multiple inclusions of the same temporal sub-layer and allows aggregation of the HEVC temporal video sub-bitstream with
associated HEVC temporal video subsets according to the hierarchy descriptors, as specified in 2.17.3 and according to the
hierarchy descriptors or HEVC hierarchy extension descriptors, as specified in 2.17.4.
3) Clauses 2.1.116 to 2.1.127
Add the following definitions after clause 2.1.115:
2.1.116 HEVC base layer: HEVC layer with nuh_layer_id equal to 0.
2.1.117 HEVC base sub-partition: HEVC video sub-bitstream that is also a conforming bitstream as specified in
Rec. ITU-T H.265 | ISO/IEC 23008-2, which contains all VCL NAL units and the associated non-VCL NAL units of an
HEVC base layer up to a target highest TemporalId identified by a target HEVC operation point.
2.1.118 HEVC enhancement sub-partition: One HEVC layer with a particular value of nuh_layer_id greater than 0
in the NAL unit header syntax element or an HEVC temporal video sub-bitstream or HEVC temporal video subset thereof,
of which the HEVC layer aggregation with an HEVC base sub-partition and zero or more other HEVC sub-partitions,
according to HEVC layer list, results in a valid HEVC layered video stream.
2.1.119 HEVC layer: HEVC video sub-bitstream that contains all VCL NAL units with a particular value of
nuh_layer_id in the NAL unit header syntax element and associated non-VCL NAL units, as defined in Annex F of
Rec. ITU-T H.265 | ISO/IEC 23008-2.
2.1.120 HEVC layer aggregation: Successive HEVC layer component aggregation of all HEVC layer components in
an HEVC video sequence.
2.1.121 HEVC layer component: VCL NAL units and the associated non-VCL NAL units of an HEVC access unit
which belong to an HEVC sub-partition.
2.1.122 HEVC layer component aggregation: Concatenation of all HEVC layer components with the same output
time from all HEVC sub-partitions indicated in an HEVC layer list in the order indicated by the HEVC layer list, resulting
in a valid HEVC access unit as defined in Annex F of Rec. ITU-T H.265 | ISO/IEC 23008-2.
2.1.123 HEVC layer list: Ordered list of HEVC sub-partitions for a target HEVC operation point of which the HEVC
layer aggregation results in a valid HEVC layered video stream.
NOTE – An HEVC layer list is signalled for each target HEVC operation point using the HEVC operation point descriptor.
2.1.124 HEVC layered video stream: HEVC video stream that contains all VCL NAL units and associated non-VCL
NAL units conforming to one or more profiles defined in Annex G or Annex H of Rec. ITU-T H.265 | ISO/IEC 23008-2.
2.1.125 HEVC operation point: Operation point based on a target highest TemporalId, and a target layer identifier list
as specified in Rec. ITU-T H.265 | ISO/IEC 23008-2.
NOTE – Rec. ITU-T H.265 | ISO/IEC 23008-2 specifies the sub-bitstream extraction process for an operation point according to
which the operation point is a conforming bitstream. An operation point is associated with an HEVC layered video stream or HEVC
base layer.
2.1.126 HEVC sub-partition: Either an HEVC base sub-partition or an HEVC enhancement sub-partition.
NOTE – An HEVC sub-partition can either be an HEVC temporal video sub-bitstream if it includes VCL NAL units with the
minimum value of TemporalId (i.e., including TemporalId equal to 0), or it can be an HEVC temporal video subset, if it
complements an HEVC base sub-partition or HEVC enhancement sub-partition with the same target layer identifier.
2.1.127 HEVC temporal enhancement sub-partition: An HEVC temporal video subset of the same HEVC layer as
another HEVC enhancement sub-partition of the same HEVC video stream which contains one or more complementary
temporal sub-layers, as specified in Rec. ITU-T H.265 | ISO/IEC 23008-2.
2 Rec. ITU-T H.222.0 (2014)/Amd.2 (12/2015)
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ISO/IEC 13818-1:2015/Amd.2:2016 (E)
4) Clause 2.4.2.13
Add the following new clause immediately after 2.4.2.12:
2.4.2.13 T-STD extensions for carriage of MV HEVC and SHVC
T-STD extensions and T-STD parameters for decoding of HEVC layered video streams are defined in 2.17.4. Program
stream support including P-STD extensions and P-STD parameters are not specified for HEVC extension video streams.
5) Clause 2.4.3.7
In the section specifying the PTS (presentation time stamp), replace:
For HEVC video streams, HEVC temporal video sub-bitstreams and HEVC temporal video subsets, if a PTS is present
in the PES packet header, it shall refer to the first HEVC access unit that commences in this PES packet. To achieve
consistency between the STD model and the HRD model defined in Annex C of Rec. ITU-T H.265 | ISO/IEC 23008-2,
for each HEVC access unit the PTS value in the STD shall, within the accuracy of their respective clocks, indicate the
same instant in time as the nominal DPB output time in the HRD, as defined in Annex C of Rec. ITU-T H.265 | ISO/IEC
23008-2.
with:
For HEVC video streams, HEVC temporal video sub-bitstreams and HEVC temporal video subsets, if a PTS is present
in the PES packet header, it shall refer to the first HEVC access unit that commences in this PES packet. For HEVC video
sub-partitions, if a PTS is present in the PES packet header, it shall refer to the first HEVC layer component that
commences in this PES packet. An HEVC layer component commences in a PES packet if the first byte of the HEVC
layer component is present in the PES packet. To achieve consistency between the STD model and the HRD model
defined in Annex C of Rec. ITU-T H.265 | ISO/IEC 23008-2, for each HEVC access unit the PTS value in the STD shall,
within the accuracy of their respective clocks, indicate the same instant in time as the nominal DPB output time in the
HRD, as defined in Annex C of Rec. ITU-T H.265 | ISO/IEC 23008-2.
In the section specifying the DTS (decoding time stamp), replace:
For HEVC video streams, HEVC temporal video sub-bitstreams and HEVC temporal video subsets, if a DTS is present
in the PES packet header, it shall refer to the first HEVC access unit that commences in this PES packet. To achieve
consistency between the STD model and the HRD model defined in Annex C of Rec. ITU-T H.265 | ISO/IEC 230082,
for each HEVC access unit the DTS value in the STD shall, within the accuracy of their respective clocks, indicate the
same instant in time as the nominal CPB removal time in the HRD, as defined in Annex C of Rec. ITU-T H.265 |
ISO/IEC 230082.
with:
For HEVC video streams, HEVC temporal video sub-bitstreams and HEVC temporal video subsets, if a DTS is present
in the PES packet header, it shall refer to the first HEVC access unit that commences in this PES packet. For HEVC video
sub-partitions, if a DTS is present in the PES packet header, it shall refer to the first HEVC layer component that
commences in this PES packet. An HEVC layer component commences in a PES packet if the first byte of the HEVC
layer component is present in the PES packet. To achieve consistency between the STD model and the HRD model
defined in Annex C of Rec. ITU-T H.265 | ISO/IEC 23008-2, for each HEVC access unit the DTS value in the STD shall,
within the accuracy of their respective clocks, indicate the same instant in time as the nominal CPB removal time t in the
r
HRD, as defined in Annex C of Rec. ITU-T H.265 | ISO/IEC 23008-2.
6) Clause 2.4.4.9
In Table 2-34 – Stream type assignments, replace the following lines:
0x1B AVC video stream conforming to one or more profiles defined in Annex A of Rec. ITU-T H.264 | ISO/IEC 14496-10
or AVC video sub-bitstream of SVC as defined in 2.1.78 or MVC base view sub-bitstream, as defined in 2.1.85, or
AVC video sub-bitstream of MVC, as defined in 2.1.88 or MVCD base view sub-bitstream, as defined in 2.1.97, or
AVC video sub-bitstream of MVCD, as defined in 2.1.100
0x28-0x7E Rec. ITU-T H.222.0 | ISO/IEC 13818-1 Reserved
with:
Rec. ITU-T H.222.0 (2014)/Amd.2 (12/2015) 3
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ISO/IEC 13818-1:2015/Amd.2:2016 (E)
0x1B AVC video stream conforming to one or more profiles defined in Annex A of Rec. ITU-T H.264 | ISO/IEC 14496-10
or AVC video sub-bitstream of SVC as defined in 2.1.78 or MVC base view sub-bitstream, as defined in 2.1.85, or
AVC video sub-bitstream of MVC, as defined in 2.1.88 or MVCD base view sub-bitstream, as defined in 2.1.97, or
AVC video sub-bitstream of MVCD, as defined in 2.1.100, or AVC base layer of an HEVC video stream conforming
to one or more profiles defined in Annex G or Annex H of Rec. ITU-T H.265 | ISO/IEC 23008-2
0x28 HEVC enhancement sub-partition which includes TemporalId 0 of an HEVC video stream where all NALs units
contained in the stream conform to one or more profiles defined in Annex G of Rec. ITU-T H.265 |
ISO/IEC 23008-2
0x29 HEVC temporal enhancement sub-partition of an HEVC video stream where all NAL units contained in the
stream conform to one or more profiles defined in Annex G of Rec. ITU-T H.265 | ISO/IEC 23008-2
0x2A HEVC enhancement sub-partition which includes TemporalId 0 of an HEVC video stream where all NAL units
contained in the stream conform to one or more profiles defined in Annex H of Rec. ITU-T H.265 |
ISO/IEC 23008-2
0x2B HEVC temporal enhancement sub-partition of an HEVC video stream where all NAL units contained in the
stream conform to one or more profiles defined in Annex H of Rec. ITU-T H.265 | ISO/IEC 23008-2
0x2C-0x7E Rec. ITU-T H.222.0 | ISO/IEC 13818-1 Reserved
7) Clause 2.6.6
Replace Table 2-49 with:
Table 2-49 – Hierarchy descriptor
Syntax No. of bits Mnemonic
hierarchy_descriptor ( ) {
descriptor_tag 8 uimsbf
descriptor_length 8 uimsbf
no_view_scalability_flag 1 bslbf
no_temporal_scalability_flag 1 bslbf
no_spatial_scalability_flag 1 bslbf
no_quality_scalability_flag 1 bslbf
hierarchy_type 4 uimsbf
reserved 2 bslbf
hierarchy_layer_index 6 uimsbf
tref_present_flag 1 bslbf
reserved 1 bslbf
hierarchy_embedded_layer_index 6 uimsbf
reserved 2 bslbf
hierarchy_channel 6 uimsbf
}
8) Clause 2.6.7
Replace:
temporal_scalability_flag – A 1-bit flag, which when set to '0' indicates that the associated program element enhances
the frame rate of the bit-stream resulting from the program element referenced by the hierarchy_embedded_layer_index.
The value of '1' for this flag is reserved.
spatial_scalability_flag – A 1-bit flag, which when set to '0' indicates that the associated program element enhances the
spatial resolution of the bit-stream resulting from the program element referenced by the
hierarchy_embedded_layer_index. The value of '1' for this flag is reserved.
quality_scalability_flag – A 1-bit flag, which when set to '0' indicates that the associated program element enhances the
SNR quality or fidelity of the bit-stream resulting from the program element referenced by the
hierarchy_embedded_layer_index. The value of '1' for this flag is reserved.
4 Rec. ITU-T H.222.0 (2014)/Amd.2 (12/2015)
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ISO/IEC 13818-1:2015/Amd.2:2016 (E)
hierarchy_type – The hierarchical relation between the associated hierarchy layer and its hierarchy embedded layer is
defined in Table 2-50. If scalability applies in more than one dimension, this field shall be set to the value of '8'
("Combined Scalability"), and the flags temporal_scalability_flag, spatial_scalability_flag and quality_scalability_flag
shall be set accordingly. For MVC video sub-bitstreams, this field shall be set to the value of '9' ("MVC video
sub-bitstream") and the flags temporal_scalability_flag, spatial_scalability_flag and quality_scalability_flag shall be set
to '1'. For MVC base view sub-bitstreams, this field shall be set to the value of '15' and the flags temporal_scalability_flag,
spatial_scalability_flag and quality_scalability_flag shall be set to '1'. For MVCD video sub-bitstreams, this field shall be
set to the value of '9' ("MVCD video sub-bitstream") and the flags temporal_scalability_flag, spatial_scalability_flag and
quality_scalability_flag shall be set to '1'. For MVCD base view sub-bitstreams, this field shall be set to the value of '15'
and the flags temporal_scalability_flag, spatial_scalability_flag and quality_scalability_flag shall be set to '1'.
with:
no_view_scalability_flag – A 1-bit flag, which when set to '0' indicates that the associated program element enhances
the number of views of the bit-stream resulting from the program element referenced by the
hierarchy_embedded_layer_index. The value of '1' for this flag is reserved.
no_temporal_scalability_flag – A 1-bit flag, which when set to '0' indicates that the associated program element
enhances the frame rate of the bit-stream resulting from the program element referenced by the
hierarchy_embedded_layer_index. The value of '1' for this flag is reserved.
no_spatial_scalability_flag – A 1-bit flag, which when set to '0' indicates that the associated program element enhances
the spatial resolution of the bit-stream resulting from the program element referenced by the
hierarchy_embedded_layer_index. The value of '1' for this flag is reserved.
no_quality_scalability_flag – A 1-bit flag, which when set to '0' indicates that the associated program element enhances
the SNR quality or fidelity of the bit-stream resulting from the program element referenced by the
hierarchy_embedded_layer_index. The value of '1' for this flag is reserved.
hierarchy_type – The hierarchical relation between the associated hierarchy layer and its hierarchy embedded layer is
defined in Table 2-50. If scalability applies in more than one dimension, this field shall be set to the value of '8'
("Combined Scalability"), and the flags no_view_scalability_flag, no_temporal_scalability_flag,
no_spatial_scalability_flag and no_quality_scalability_flag shall be set accordingly. For MVC video sub-bitstreams, this
field shall be set to the value of '9' ("MVC video sub-bitstream") and the flags no_view_scalability_flag,
no_temporal_scalability_flag, no_spatial_scalability_flag and no_quality_scalability_flag shall be set to '1'. For MVC
base view sub-bitstreams, this field shall be set to the value of '15' and the flags no_view_scalability_flag,
no_temporal_scalability_flag, no_spatial_scalability_flag and no_quality_scalability_flag shall be set to '1'. For MVCD
video sub-bitstreams, this field shall be set to the value of '9' ("MVCD video sub-bitstream") and the flags
no_view_scalability_flag, no_temporal_scalability_flag, no_spatial_scalability_flag and no_quality_scalability_flag
shall be set to '1'. For MVCD base view sub-bitstreams, this field shall be set to the value of '15' and the flags
no_view_scalability_flag, no_temporal_scalability_flag, no_spatial_scalability_flag and no_quality_scalability_flag
shall be set to '1'.
Replace in Table 2-50 the description for values 8, 10 and 15, and redefine the reserved range as follows:
Table 2-50 – Hierarchy_type field values
Value Description
8 Combined Scalability or MV-HEVC sub-partition.
10 Auxiliary picture layer as defined in Annex F of Rec. ITU-T H.265 | ISO/IEC 23008-2.
11-14 Reserved
15 Base layer or MVC base view sub-bitstream or AVC video sub-bitstream of MVC or HEVC temporal
video sub-bitstream or HEVC base sub-partition.
Rec. ITU-T H.222.0 (2014)/Amd.2 (12/2015) 5
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ISO/IEC 13818-1:2015/Amd.2:2016 (E)
9) Clause 2.6.90
Replace Table 2-105 with:
Table 2-105 – Extension descriptor
Syntax No. of Mnemonic
bits
Extension_descriptor ( ) {
descriptor_tag 8 uimsbf
descriptor_length 8 uimsbf
extension_descriptor_tag 8 uimsbf
if ( extension_descriptor_tag == 0x02 ) {
ObjectDescriptorUpdate( )
}
else if ( extension_descriptor_tag == 0x03 ) {
HEVC_timing_and_HRD_descriptor( )
}
else if ( extension_descriptor_tag == 0x04 ) {
af_extension_descriptor( )
}
else if ( extension_descriptor_tag == 0x05 ) {
HEVC_operation_point_descriptor( )
}
else if ( extension_descriptor_tag == 0x06 ) {
HEVC_hierarchy_extension_descriptor( )
}
else {
for ( i=0; i
reserved 8 bslbf
}
}
}
10) Clause 2.6.91
Add the following immediately before Table 2-106:
HEVC_operation_point_descriptor( ) – This structure is defined in 2.6.100 and 2.6.101.
HEVC_hierarchy_extension_descriptor( ) – This structure is defined in 2.6.102 and 2.6.103.
Replace in Table 2-106 the description for values 5 to 255 as follows:
Table 2-106 – Extension descriptor tag values
Extension_descriptor_tag TS PS Identification
5 X n/a HEVC_operation_point_descriptor( )
6 X n/a HEVC_hierarchy_extension_descriptor( )
7-255 n/a n/a Rec. ITU-T H.222.0 | ISO/IEC 13818-1 Reserved
6 Rec. ITU-T H.222.0 (2014)/Amd.2 (12/2015)
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ISO/IEC 13818-1:2015/Amd.2:2016 (E)
11) Clause 2.6.95
Add the following text immediately before Table 2-109:
This descriptor, when present, shall only be used for elementary streams with a stream_type value of 0x24 or 0x25. When
the program element for which this descriptor is used is part of an HEVC layered video stream, i.e., the program contains
at least one other program element with a stream_type value in the range of 0x28-0x2B, the semantics of
HEVC_still_present_flag, HEVC_24hr_picture_present_flag and sub_pic_hrd_params_not_present_flag shall apply to
the whole HEVC layered video stream, i.e., also to all program elements with a stream_type value in the range of
0x28-0x2B.
NOTE – For elementary streams with a stream_type value in the range of 0x28-0x2B, the applicable value of level_idc can be
ambiguous and depend on the output layer set, i.e. the combination with other elementary streams. This information is signalled
by the HEVC operation point descriptor.
12) Clause 2.6.96
Replace:
HEVC_still_present_flag – This 1-bit field, when set to '1', indicates that the HEVC video stream or the HEVC highest
temporal sub-layer representation may include HEVC still pictures. When set to '0', then the associated HEVC video
stream shall not contain HEVC still pictures.
NOTE 2 – According to Rec. ITU-T H.265 | ISO/IEC 23008-2, IDR pictures are always associated with a TemporalId value equal
to 0, Consequently, if the HEVC video descriptor applies to an HEVC temporal video subset, HEVC still pictures can only be
present in the associated HEVC temporal video sub-bitstream.
HEVC_24_hour_picture_present_flag – This 1-bit flag, when set to '1', indicates that the associated HEVC video
stream or the HEVC highest temporal sub-layer representation may contain HEVC 24-hour pictures. For the definition of
an HEVC 24-hour picture, see clause 2.1.97. If this flag is set to '0', the associated HEVC video stream shall not contain
any HEVC 24-hour pictures.
sub_pic_hrd_params_not_present_flag – This 1-bit field, when set to '0', indicates that the VUI in the HEVC video
stream shall have the syntax element sub_pic_hrd_params_present_flag set to '1'. When the
sub_pic_hrd_params_not_present_flag is set to '1', the associated HEVC video stream may not contain
sub_pic_hrd_params_present_flag in the VUI or the flag may be set to '0'.
NOTE 3 – Decoders that support the sub-picture processing mode are expected to manage the T-STD using the appropriate delay
values in the HEVC video stream specified in the relevant SEI messages defined in ISO/IEC 23008-2:2013 and in addition in
Annex C.2.3 (timing of decoding unit removal and decoding of decoding unit) instead of the time stamp values in the PES header.
with:
HEVC_still_present_flag – This 1-bit field, when set to '1', indicates that the HEVC video stream or the HEVC highest
temporal sub-layer representation may include HEVC still pictures. For the definition of an HEVC still picture, see clause
2.1.103. When the HEVC_still_present_flag is set to '0', the associated HEVC video stream shall not contain HEVC still
pictures.
When the program element to which this descriptor applies is part of an HEVC layered video stream and the
HEVC_still_present_flag is set to '0', the whole HEVC layered video stream shall not contain HEVC still pictures.
NOTE 2 – According to Rec. ITU-T H.265 | ISO/IEC 23008-2, IDR pictures are always associated with a TemporalId value equal
to 0. Consequently, if the HEVC video descriptor applies to an HEVC temporal video subset, HEVC still pictures can only be
present in the associated HEVC temporal video sub-bitstream.
HEVC_24_hour_picture_present_flag – This 1-bit flag, when set to '1', indicates that the associated HEVC video
stream or the HEVC highest temporal sub-layer representation may contain HEVC 24-hour pictures. For the definition of
an HEVC 24-hour picture, see clause 2.1.97. When the HEVC_24_hour_picture_present_flag is set to '0', the associated
HEVC video stream shall not contain any HEVC 24-hour pictures.
When the program element to which this descriptor applies is part of an HEVC layered video stream and
HEVC_24_hour_picture_present_flag is set to '0', the whole HEVC layered video stream shall not contain any HEVC
24-hour pictures.
sub_pic_hrd_params_not_present_flag – This 1-bit field, when set to '0', indicates that the VUI in the HEVC video
stream shall have the syntax element sub_pic_hrd_params_present_flag set to '1'. When the
sub_pic_hrd_params_not_present_flag is equal to '1', the associated HEVC video stream may not contain
sub_pic_hrd_params_present_flag in the VUI or the sub_pic_hrd_params_present_flag may be set to '0'.
Rec. ITU-T H.222.0 (2014)/Amd.2 (12/2015) 7
---------------------- Page: 10 ----------------------
ISO/IEC 13818-1:2015/Amd.2:2016 (E)
When the program element to which this descriptor applies is part of an HEVC layered video stream and
sub_pic_hrd_params_not_present_flag is set to '0', the following apply:
• The HEVC timing and HRD descriptor shall be present in the program map table associated with the program.
NOTE 3 – If sub_picture_hrd_params_not_present equals '0', HRD parameters can be expected to be present, though the
hrd_management_valid_flag is not mandated to be set to '1' in this case.
• The HRD parameter structures that are applicable for all program elements with stream_type value of 0x24,
0x25, or in the range of 0x28-0x2B, inclusively, shall be present in the HEVC video stream and the value of
sub_pic_hrd_params_present_flag in those HRD parameter structures shall be set to '1'.
13) Clause 2.6.97
Replace Table 2-110 with the following:
Table 2-110 – HEVC timing and HRD descriptor
Syntax No. of bits Mnemonic
HEVC_timing_and_HRD_descriptor() {
hrd_management_valid_flag 1 bslbf
target_schedule_idx_not_present_flag 1 bslbf
target_schedule_idx 5 uimsbf
picture_and_timing_info_present_flag 1 bslbf
if (picture_and_timing_info_present_flag == '1') {
90kHz_flag 1 bslbf
reserved 7 bslbf
if (90kHz_flag = = '0') {
N 32 uimsbf
K 32 uimsbf
}
num_units_in_tick 32 uimsbf
}
}
14) Clause 2.6.98
Replace the following paragraphs:
hrd_management_valid_flag – This 1-bit flag is only defined for use in transport streams. When the HEVC timing and
HRD d
...
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