ISO/IEC 13818-1:2015/Amd 5:2016

Information technology — Generic coding of moving pictures and associated audio information — Part 1: Systems — Amendment 5: Carriage of MPEGH 3D audio over MPEG2 systems

Technologies de l'information — Codage générique des images animées et du son associé — Partie 1: Systèmes — Amendement 5: Transport de l'audio MPEGH 3D à travers les systèmes MPEG2

General Information

• Status: Withdrawn
• Publication Date: 05-Oct-2016
• Withdrawal Date: 05-Oct-2016
• ICS: 35.040 - Information coding
• ICS: 35.040.40 - Coding of audio, video, multimedia and hypermedia information
• Technical Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Drafting Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 02-Mar-2018

Relations

• Revised: ISO/IEC 13818-1:2018 - Information technology — Generic coding of moving pictures and associated audio information — Part 1: Systems
• Effective Date: 02-Sep-2017
• Amends: ISO/IEC 13818-1:2015 - Information technology — Generic coding of moving pictures and associated audio information — Part 1: Systems
• Effective Date: 09-May-2020

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 13818-1
Fifth edition
2015-07-01
AMENDMENT 5
2016-10-15
Information technology — Generic
coding of moving pictures and
associated audio information —
Part 1:
Systems
AMENDMENT 5: Carriage of MPEGH 3D
audio over MPEG2 systems
Technologies de l’information — Codage générique des images
animées et du son associé —
Partie 1: Systèmes
AMENDEMENT 5: Transport de l’audio MPEGH 3D à travers les
systèmes MPEG2
Reference number
ISO/IEC 13818-1:2015/Amd.5:2016(E)
©
ISO/IEC 2016

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ISO/IEC 13818-1:2015/Amd.5:2016(E)

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ii © ISO/IEC 2016 – All rights reserved

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ISO/IEC 13818-1:2015/Amd.5:2016(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
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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.
The procedures used to develop this document and those intended for its further maintenance
are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria
needed for the different types of document 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 and IEC shall not be held responsible for identifying any or all such
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be in the Introduction and/or on the ISO list of patent declarations received (see
www.iso.org/patents).
Any trade name used in this document is information 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 conformity
assessment, as well as information about ISO's adherence to the WTO principles in the
Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary
information
Amendment 5 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
Rec. ITU-T H.222.0 (07/2016)/Amd.5.
© ISO 2016 – All rights reserved 1

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CONTENTS
Page
1) Clause 1.2.3 . 1
2) Table 2-22. 1
3) Table 2-34. 2
4) Clause 2.6.90 . 2
5) Clause 2.6.91 . 3
6) Clauses 2.6.106 to 2.6.118 . 4
7) Clause 2.19 . 14
8) Table U.2 . 16
9) Clauses U.3.8 to U.3.10 . 16




iv Rec. ITU-T H.222.0 (2014)/Amd.5 (07/2016)

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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
INTERNATIONAL STANDARD
ITU-T RECOMMENDATION
Information technology – Generic coding of moving pictures and associated audio
information: Systems
Amendment 5

Carriage of MPEG-H 3D audio over MPEG-2 systems
1) Clause 1.2.3
In clause 1.2.3, add:
– ISO/IEC 23001-8:2016, Information technology – MPEG systems technologies – Part 8: Coding-
independent code-points.
– ISO/IEC 23003-3:2012, Information technology – MPEG audio technologies – Part 3: Unified speech and
audio coding.
– ISO/IEC 23003-4:2015, Information technology – MPEG audio technologies – Part 4: Dynamic Range
Control.
– ISO/IEC 23008-3:2105, Information technology – High efficiency coding and media delivery in
heterogeneous environments – Part 3: 3D audio.
2) Table 2-22
Replace 2-22 with the following:
Table 2-22 – Stream_id assignments
Stream_id Note stream coding
1011 1100 1 program_stream_map
1011 1101 2,9 private_stream_1
1011 1110 padding_stream
1011 1111 3 private_stream_2
110x xxxx ISO/IEC 13818-3 or ISO/IEC 11172-3 or ISO/IEC 13818-7 or ISO/IEC 14496-3 or
ISO/IEC 23008-3 audio stream number x xxxx
1110 xxxx Rec. ITU-T H.262 | ISO/IEC 13818-2, ISO/IEC 11172-2, ISO/IEC 14496-2,
Rec. ITU-T H.264 | ISO/IEC 14496-10 or Rec. ITU-T H.265 | ISO/IEC 23008-2
video stream number xxxx
1111 0000 3 ECM_stream
1111 0001 3 EMM_stream
1111 0010 5 Rec. ITU-T H.222.0 | ISO/IEC 13818-1 Annex A
or ISO/IEC 13818-6_DSMCC_stream
1111 0011 2 ISO/IEC_13522_stream
1111 0100 6 Rec. ITU-T H.222.1 type A
1111 0101 6 Rec. ITU-T H.222.1 type B
1111 0110 6 Rec. ITU-T H.222.1 type C
1111 0111 6 Rec. ITU-T H.222.1 type D
1111 1000 6 Rec. ITU-T H.222.1 type E
1111 1001 7 ancillary_stream
1111 1010 ISO/IEC 14496-1_SL-packetized_stream
1111 1011 ISO/IEC 14496-1_FlexMux_stream
1111 1100 metadata stream
1111 1101 8 extended_stream_id
 Rec. ITU-T H.222.0 (2014)/Amd.5 (07/2016) 1

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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
Table 2-22 – Stream_id assignments
Stream_id Note stream coding
1111 1110 reserved data stream
1111 1111 4 program_stream_directory
The notation x means that the values '0' or '1' are both permitted and results in the same stream type. The stream number is given by
the values taken by the x's.
NOTE 1 – PES packets of type program_stream_map have unique syntax specified in 2.5.4.1.
NOTE 2 – PES packets of type private_stream_1 and ISO/IEC_13552_stream follow the same PES packet syntax as those for Rec.
ITU-T H.262 | ISO/IEC 13818-2 video and ISO/IEC 13818-3 audio streams.
NOTE 3 – PES packets of type private_stream_2, ECM_stream and EMM_stream are similar to private_stream_1 except no syntax
is specified after PES_packet_length field.
NOTE 4 – PES packets of type program_stream_directory have a unique syntax specified in 2.5.5.
NOTE 5 – PES packets of type DSM-CC_stream have a unique syntax specified in ISO/IEC 13818-6.
NOTE 6 – This stream_id is associated with stream_type 0x09 in Table 2-34.
NOTE 7 – This stream_id is only used in PES packets, which carry data from a program stream or an ISO/IEC 11172-1 System
Stream, in a transport stream (refer to 2.4.3.8).
NOTE 8 – The use of stream_id 0xFD (extended_stream_id) identifies that this PES packet employs an extended syntax to permit
additional stream types to be identified.
NOTE 9 – JPEG 2000 video streams (stream_type = 0x21) are carried using the same PES packet syntax as private_stream_1.
3) Table 2-34
In Table 2-34 add the following:
Table 2-34 – Stream type assignments
Value Description
0x2D ISO/IEC 23008-3 Audio with MHAS transport syntax – main stream
0x2E ISO/IEC 23008-3 Audio with MHAS transport syntax – auxiliary stream
0x2F-0x7E Rec. ITU-T H.222.0 | ISO/IEC 13818-1 Reserved
4) Clause 2.6.90
Replace Table 2-105 with:

Table 2-105 – Extension descriptor
Syntax No. of bits Mnemonic
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) {
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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
Table 2-105 – Extension descriptor
Syntax No. of bits Mnemonic
 af_extension_descriptor()
}
else if ( extension_descriptor_tag == 0x05) {
 HEVC_operation_point_descriptor()
}
else if ( extension_descriptor_tag == 0x06) {
 HEVC_hierachy_extension_descriptor()
}
else if ( extension_descriptor_tag == 0x07) {
 Green_extension_descriptor ()
}
else if ( extension_descriptor_tag == 0x08) {
 MPEG-H_3dAudio_descriptor()
}
else if ( extension_descriptor_tag == 0x09) {
 MPEG-H_3dAudio_config_descriptor()
}
else if ( extension_descriptor_tag == 0x0A) {
 MPEG-H_3dAudio_scene_descriptor()
}
else if ( extension_descriptor_tag == 0x0B) {
 MPEG-H_3dAudio_text_label_descriptor()
}
else if ( extension_descriptor_tag == 0x0C) {
 MPEG-H_3dAudio_multi-stream_descriptor()
}
else if ( extension_descriptor_tag == 0x0D) {
 MPEG-H_3dAudio_drc_loudness_descriptor()
}
else if ( extension_descriptor_tag == 0x0E) {
 MPEG-H_3dAudio_command_descriptor()
}
else {
 for ( i=0; i   reserved 8 bslbf
 }
}
}
5) Clause 2.6.91
Add the following immediately before Table 2-106:
MPEG-H_3dAudio_descriptor() – This structure is defined in 2.6.106 and 2.6.107.
MPEG-H_3dAudio_config_descriptor() – This structure is defined in 2.6.108 and 2.6.109.
MPEG-H_3dAudio_scene_descriptor() – This structure is defined in 2.6.110 and 2.6.111.
MPEG-H_3dAudio_text_label_descriptor() – This structure is defined in 2.6.112 and 2.6.113.
MPEG-H_3dAudio_multi-stream_descriptor() – This structure is defined in 2.6.114 and 2.6.115.
MPEG-H_3dAudio_drc_loudness_descriptor() – This structure is defined in 2.6.116 and 2.6.117.
 Rec. ITU-T H.222.0 (2014)/Amd.5 (07/2016) 3

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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
MPEG-H_3dAudio_command_descriptor() – This structure is defined in 2.6.118.
Replace Table 2-106 with the following:
Table 2-106 – Extension descriptor tag values
Extension_descriptor_tag TS PS Identification
0 n/a n/a Reserved
1 n/a X Forbidden
2 X X ODUpdate_descriptor
3 X n/a HEVC_timing_and_HRD_descriptor()
4 X n/a af_extensions_descriptor()
5 X n/a HEVC_operation_point_descriptor()
6 X n/a hierarchy_extension_descriptor()
7 X n/a Green_extension_descriptor()
8 X n/a MPEG-H_3dAudio_descriptor()
9 X n/a MPEG-H_3dAudio_config_descriptor()
0x0A X n/a MPEG-H_3dAudio_scene_descriptor()
0x0B X n/a MPEG-H_3dAudio_text_label_descriptor()
0x0C X n/a MPEG-H_3dAudio_multi-stream_descriptor()
0x0D X n/a MPEG-H_3dAudio_drc_loudness_descriptor()
0x0E X n/a MPEG-H_3dAudio_command_descriptor()
0x0F-0xFF n/a n/a Rec. ITU-T H.222.0 | ISO/IEC 13818-1 Reserved
6) Clauses 2.6.106 to 2.6.118
Add the following clauses after 2.6.105:
2.6.106 MPEG-H 3D audio descriptor
The MPEG-H 3D audio descriptor provides information on basic coding information in the associated ISO/IEC 23008-3
stream. This descriptor shall be present in the associated PMT for MPEG-H 3D audio content with stream_type equal to
0x2D.
Table 2-111sexies– MPEG-H 3D audio descriptor
Syntax No of bits Mnemonic
MPEG-H_3dAudio_descriptor() {
mpegh3daProfileLevelIndication 8 uimsbf

interactivityEnabled 1 bslbf
reserved 9 bslbf
referenceChannelLayout 6 uimsbf
for (i=0; i  reserved 8 bslbf
}
}
2.6.107 Semantics for MPEG-H 3D audio descriptor
mpegh3daProfileLevelIndication – The audio profile and level of the associated ISO/IEC 23008-3 audio stream,
encoded as specified for the mpegh3daProfileLevelIndication field in clause 5.3.2 in ISO/IEC 23008-3.
referenceChannelLayout – Reference channel configuration value as defined as "ChannelConfiguration" in
ISO/IEC 23001-8 ("Codec Independent Code Points").
interactivityEnabled – If set to 1, this flag indicates that the 3D audio stream contains elements with associated metadata
which enables user interactivity. If this flag is set to 0, no user interactivity of any kind is available. This flag may be used
to determine the need for initializing the user interactivity interface in the Systems decoder.
4 Rec. ITU-T H.222.0 (2014)/Amd.5 (07/2016)

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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
2.6.108 MPEG-H 3D audio config descriptor
The MPEG-H 3D audio config descriptor provides information on the complete configuration data of one ISO/IEC 23008-
3 stream.
Table 2-111septies – MPEG-H 3D audio config descriptor
Syntax No of bits Mnemonic
MPEG-H_3dAudio_config_descriptor() {
mpegh3daConfig()
}
2.6.109 Semantics for MPEG-H 3D audio config descriptor
mpegh3daConfig() – The mpegh3daConfig() of the associated ISO/IEC 23008-3 audio stream, as specified in
clause 5.2.2.1 in ISO/IEC 23008-3.
2.6.110 MPEG-H 3D audio scene descriptor
The MPEG-H 3D audio scene descriptor provides information on user selectable and/or modifiable audio objects in an
ISO/IEC 23008-3 stream.

Table 2-111octies – MPEG-H 3d audio scene descriptor
Syntax No of bits Mnemonic
MPEG-H_3dAudio_scene_descriptor() {
groupDefinitionPresent 1 bslbf
switchGroupDefinitionPresent 1 bslbf
presetGroupDefinitionPresent 1 bslbf
reserved 5 bslbf

3dAudioSceneInfoID 8 bslbf

if (groupDefinitionPresent) {
 reserved 1 bslbf
 numGroups 7 uimsbf
 for ( i=0; i < numGroups; i++) {
  reserved 1 bslbf
  mae_groupID 7 uimsbf
  reserved 3 bslbf
  mae_allowOnOff 1 bslbf
  mae_defaultOnOff 1 bslbf
  mae_allowPositionInteractivity 1 bslbf
  mae_allowGainInteractivity 1 bslbf
  mae_hasContentLanguage 1 bslbf
  reserved 4 bslbf
  mae_contentKind 4 uimsbf
  if ( mae_allowPositionInteractivity ) {
  reserved 1 bslbf
  mae_interactivityMinAzOffset 7 uimsbf
  reserved 1 bslbf
  mae_interactivityMaxAzOffset 7 uimsbf
  reserved 3 bslbf
  mae_interactivityMinElOffset 5 uimsbf
  reserved 3 bslbf
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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
Table 2-111octies – MPEG-H 3d audio scene descriptor
Syntax No of bits Mnemonic
  mae_interactivityMaxElOffset 5 uimsbf
  mae_interactivityMinDistOffset 4 uimsbf
  mae_interactivityMaxDistOffset 4 uimsbf
  }
  if ( mae_allowGainInteractivity ) {
  reserved 2 bslbf
  mae_interactivityMinGain 6 uimsbf
  reserved 3 bslbf
  mae_interactivityMaxGain 5 uimsbf
  }
  if ( mae_hasContentLanguage ) {
  mae_contentLanguage 24 uimsbf
  }
 }
}

if (switchGroupDefinitionPresent) {
 reserved 3 bslbf
 numSwitchGroups 5 uimsbf
 for ( i=0; i < numSwitchGroups; i++) {
  reserved 1 bslbf
  mae_switchGroupID 5 uimsbf
  mae_switchGroupAllowOnOff 1 bslbf
  mae_switchGroupDefaultOnOff 1 bslbf
  reserved 3 bslbf
  mae_bsSwitchGroupNumMembers 5 uimsbf
  for ( i = 0; i < mae_bsSwitchGroupNumMembers + 1; i++ ) {
  reserved 1 bslbf
  mae_switchGroupMemberID 7 uimsbf
  }
  reserved 1 bslbf
  mae_switchGroupDefaultGroupID 7 uimsbf
 }
}

if (presetGroupDefinitionPresent) {
 reserved 3 bslbf
 mae_numGroupPresets 5 uimsbf
 for ( i = 0; i < mae_numGroupPresets; i++ ) {
  reserved 3 bslbf
  mae_groupPresetID 5 uimsbf
  reserved 3 bslbf
  mae_groupPresetKind 5 uimsbf
  reserved 4 bslbf
  mae_numGroupPresetConditions 4 uimsbf
  for ( j = 0; j < mae_numGroupPresetConditions+1; j++ ) {
  mae_groupPresetGroupID 7 uimsbf
  mae_groupPresetConditionOnOff 1 bslbf
  if (mae_groupPresetConditionOnOff ) {
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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
Table 2-111octies – MPEG-H 3d audio scene descriptor
Syntax No of bits Mnemonic
   reserved 4 bslbf
   mae_groupPresetDisableGainInteractivity 1 bslbf
   mae_groupPresetGainFlag 1 bslbf
   mae_groupPresetDisablePositionInteractivity 1 bslbf
   mae_groupPresetPositionFlag 1 bslbf
   if ( mae_groupPresetGainFlag ) {
   mae_groupPresetGain 8 uimsbf
   }
   if( mae_groupPresetPositionFlag ){
   mae_groupPresetAzOffset 8 uimsbf
   reserved 2 bslbf
   mae_groupPresetElOffset 6 uimsbf
   reserved 4 bslbf
   mae_groupPresetDistFactor 4 uimsbf
   }
  }
  }
 }
}

for (i=0; i  reserved 8 bslbf
}
}
2.6.111 Semantic definition of fields in MPEG-H 3D audio scene descriptor
groupDefinitionPresent – A one-bit flag signalling the presence of interactivity information of one group in this
descriptor.
switchGroupDefinitionPresent – A one-bit flag signalling the presence of switch group information in this descriptor.
presetGroupDefinitionPresent – A one-bit flag signalling the presence of preset group information in this descriptor.
3dAudioSceneInfoID – See ISO/IEC 23008-3, clause 15.3.
numGroups – This field signals the number of groups in the audio scene description. This field can take values between
1 and 127, and shall be less or equal to the value of mae_numGroups present in the associated ISO/IEC 23008-3 stream.
mae_groupID – See ISO/IEC 23008-3, clause 15.3.
mae_allowOnOff – See ISO/IEC 23008-3, clause 15.3.
mae_defaultOnOff – See ISO/IEC 23008-3, clause 15.3.
mae_allowPositionInteractivity – See ISO/IEC 23008-3, clause 15.3.
mae_allowGainInteractivity – See ISO/IEC 23008-3, clause 15.3.
mae_hasContentLanguage – See ISO/IEC 23008-3, clause 15.3.
mae_contentKind – See ISO/IEC 23008-3, clause 15.3.
mae_interactivityMinAzOffset – See ISO/IEC 23008-3, clause 15.3.
mae_interactivityMaxAzOffset – See ISO/IEC 23008-3, clause 15.3.
mae_interactivityMinElOffset – See ISO/IEC 23008-3, clause 15.3.
mae_interactivityMaxElOffset – See ISO/IEC 23008-3, clause 15.3.
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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
mae_interactivityMinDistOffset – See ISO/IEC 23008-3, clause 15.3.
mae_interactivityMaxDistOffset – See ISO/IEC 23008-3, clause 15.3.
mae_interactivityMinGain – See ISO/IEC 23008-3, clause 15.3.
mae_interactivityMaxGain – See ISO/IEC 23008-3, clause 15.3.
mae_contentLanguage – See ISO/IEC 23008-3, clause 15.3.
numSwitchGroups – This field signals the number of switch groups minus one in the overall scene. This field can take
values between 0 and 31, resulting in a maximum number of 32 switch groups. It shall be less than or equal to the value
of mae_numSwitchGroups present in the associated ISO/IEC 23008-3 stream.
mae_switchGroupID – See ISO/IEC 23008-3, clause 15.3.
mae_switchGroupAllowOnOff – See ISO/IEC 23008-3, clause 15.3.
mae_switchGroupDefaultOnOff – See ISO/IEC 23008-3, clause 15.3; if mae_switchGroupAllowOnOff is '0', then
mae_ switchGroupDefaultOnOff shall be set to '0'.
mae_bsSwitchGroupNumMembers – See ISO/IEC 23008-3, clause 15.3.
mae_switchGroupMemberID – See ISO/IEC 23008-3, clause 15.3.
mae_switchGroupDefaultGroupID – See ISO/IEC 23008-3, clause 15.3.
mae_numGroupPresets – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetID – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetKind – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetNumConditions – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetGroupID – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetConditionOnOff – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetDisableGainInteractivity – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetGainFlag – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetDisablePositionInteractivity – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetPositionFlag – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetGain – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetAzOffset – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetElOffset – See ISO/IEC 23008-3, clause 15.3.
mae_groupPresetDistFactor – See ISO/IEC 23008-3, clause 15.3.
Data fields provided both in this descriptor and as in-band information in the ISO/IEC 23008-3 stream shall be set to the
same value.
2.6.112 MPEG-H 3D audio text label descriptor
The MPEG-H 3D audio scene descriptor provides text labels for the audio objects and presets in an ISO/IEC 23008-3
stream.
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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
Table 2-111novies – MPEG-H 3d audio text label descriptor
Syntax No of bits Mnemonic
MPEG-H_3dAudio_text_label_descriptor() {
3dAudioSceneInfoID 8 uimsbf
reserved 4 bslbf
numDescLanguages 4 uimsbf
for (i=0; i< numDescLanguage; i++) {
 descriptionLanguage 24 uimsbf
 reserved 1 bslbf
 numGroupDescriptions 7 uimsbf
 for ( n = 0; n < numGroupDescriptions; n++ ) {
  reserved 1 bslbf
  mae_descriptionGroupID; 7 uimsbf
  groupDescriptionDataLength 8 uimsbf
  for ( c = 0; c < groupDescriptionDataLength; c++ ) {
  groupDescriptionData 8 uimsbf
  }
 }
 reserved 3 bslbf
 numSwitchGroupDescriptions 5 uimsbf
 for ( n = 0; n < numSwitchGroupDescriptions; n++ ) {
  reserved 3 bslbf
  mae_descriptionSwitchGroupID; 5 uimsbf
  switchGroupDescriptionDataLength 8 uimsbf
  for ( c = 0; c < switchGroupDescriptionDataLength; c++ ) {
  switchGroupDescriptionData 8 uimsbf
  }
 }
 reserved 3 bslbf
 numGroupPresetsDescriptions 5 uimsbf
 for ( n = 0; n < numGroupPresetsDescriptions; n++ ) {
  reserved 3 bslbf
  mae_descriptionGroupPresetID 5 uimsbf
  groupPresetDescriptionDataLength 8 uimsbf
  for ( c = 0; c < groupPresetDescriptionLength; c++ ) {
  groupPresetDescriptionData 8 uimsbf
  }
 }
}

for (i=0; i  reserved 8 bslbf
}
}
2.6.113 Semantic definition of fields in MPEG-H 3D audio text label descriptor
3dAudioSceneInfoID – see ISO/IEC 23008-3, clause 15.3.
maeGroupDescriptionPresent – A one-bit flag signalling the presence of description text for groups.
maeSwitchgroupDescriptionPresent – A one-bit flag signalling the presence of description text for switch groups.
maeGroupPresetDescriptionPresent – A one-bit flag signalling the presence of description text for group presets.
numDescLanguages – The number of available languages for description text.
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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
descriptionLanguage – Identifies the language or languages used by the description text of a metadata element group. It
contains a 3-character code as specified by ISO 639-2. Both ISO 639-2/B and ISO 639-2/T may be used. Each character
is coded into 8 bits according to ISO/IEC 8859-1 and inserted in order into the 24-bit field.
numGroupDescriptions – The number of available descriptions for groups.
mae_descriptionGroupID – See ISO/IEC 23008-3, clause 15.3.
groupDescriptionDataLength – The length, specified in bytes, of the following group description.
groupDescriptionData – This field contains a description of a metadata element group, i.e., a string describing the
content by a high-level description. The format shall follow UTF-8 according to ISO/IEC 10646.
numSwitchGroupDescriptions – The number of available descriptions for switch groups.
mae_descriptionSwitchGroupID – See ISO/IEC 23008-3, clause 15.3.
switchGroupDescriptionDataLength – The length, specified in bytes, of the following switch group description.
switchGroupDescriptionData – This field contains a description of a switch group, i.e., a string describing the content
by a high-level description. The format shall follow UTF-8 according to ISO/IEC 10646.
numGroupPresetsDescriptions – The number of available descriptions for group presets.
mae_descriptionGroupPresetID – See ISO/IEC 23008-3, clause 15.3.
groupPresetDescriptionDataLength – The length, specified in bytes, of the following group preset description.
groupPresetDescriptionData – This field contains a description of a metadata element group, i.e., a string describing
the content by a high-level description. The format shall follow UTF-8 according to ISO/IEC 10646.
Data fields provided both in this descriptor and as in-band information in the IS/IEC 23008-3 stream shall be set to the
same value.
2.6.114 MPEG-H 3D audio multi-stream descriptor
The MPEG-H 3D audio multi-stream descriptor provides information on the location of each mae_groupID in case of
transmission over multiple streams.
In combination with this descriptor, an MPEG-H 3D audio scene descriptor explaining the actual representation of the
overall audio scene is required to be present in the descriptor loop of the main stream.

Table 2-111decies – MPEG-H 3D audio multi-stream descriptor
Syntax No of bits Mnemonic
MPEG-H_3dAudio_multi-stream_descriptor() {
thisIsMainStream 1 bslbf
thisStreamID 7 uimsbf

if ( thisIsMainStream ) {
 reserved 1 slbf
 numAuxiliaryStreams 7 uimsbf
 reserved 1 bslbf
 mae_numGroups 7 uimsbf
 for (i=0; i< mae_numGroups; i++) {
  mae_groupID 7 uimsbf
  isInMainStream 1 bslbf
  if ( thisIsMainStream == '0' ) {
  isInTS 1 bslbf
  auxiliaryStreamID 7 uimsbf
  }
 }
}
10 Rec. ITU-T H.222.0 (2014)/Amd.5 (07/2016)

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ISO/IEC 13818-1:2015/Amd.5:2016 (E)
Table 2-111decies – MPEG-H 3D audio multi-stream descriptor
Syntax No of bits Mnemonic

for (i=0; i  reserved 8 bslbf
}
}
2.6.115 Semantic definition of fields in MPEG-H 3D audio multi-stream descriptor
thisIsMainStream – If this flag is one, the stream is a main stream, otherwise it is an auxiliary stream.
thisStreamID – This integer provides a unique ID of all available ISO/IEC 23008-3 Audio streams with MHAS transport
syntax, both main and auxiliary streams (stream_type 0x2D and 0x2E).
numAuxiliaryStreams – This integer provides information on how many auxiliary streams are available.
mae_numGroups – This field signals the number of groups in the overall audio scene (complete number of groups in
the main stream plus all possible additional streams). This field can take values between 1 and 127. It shall be set to the
same value as the corresponding field in the associated ISO/IEC 23008-3 stream.
mae_groupID – This integer provides information on the mae_groupID (as described in ISO/IEC 23008-3, section 15)
the loop instance refers to.
isInMainStream – If this flag is set to 1, the audio data related to the group (as indicated through mae_groupID) is present
in the main stream, otherwise the encoded data is transmitted in an auxiliary stream.
isInTS – If this flag is set to 1, the audio data related to the group (as indicated through mae_groupID) is present in the
same transport stream. If this flag is set to 0, the data must be retrieved from an external source.
auxiliaryStreamID – In case of transmission of encoded audio data as identified by groupID in an auxiliary stream, this
integer identifies the used auxiliary stream.
The location of the 'external source' may be signaled using the TEMI location descriptor and/or the TEMI
BaseURL_descriptor as defined in clause U.3.
When the TEMI descriptor(s) are conveyed in a TEMI_AU as a separate elementary stream on a separated PID, an
MPEG-H_3dAudio_extStreamID_descriptor() shall be present in the associated descriptor loop of the TEMI elementary
stream which provides an ID in the field "auxiliaryStreamID" that is matching the "auxiliaryStreamID" provided in the
MPEG-H_3dAudio_multi-stream_descriptor() of the main stream.
2.6.116 MPEG-H 3D audio DRC and Loudness descriptor
The MPEG-H 3D Audio Dynamic Range Control (DRC) and Loudness descriptor provides information on DRC and
Loudness information contained in an ISO/IEC 23008-3 stream.

Table 2-111undecies – MPEG-H 3d audio DRC and Loudness descriptor()
Syntax No of bits Mnemonic
MPEG-H_3dAudio_drc_loudness_descriptor () {
reserved 7 bslbf
mpegh3daDrcAndLoudnessInfoPresent 1 bslbf

if (mpegh3daDrcAndLoudnessInfoPresent) {
 reserved 2 bslbf
 drcInstructionsUniDrcCount 6 uimsbf
 res
...