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TECHNICAL SPECIFICATION
5G;
3GPP Virtual reality profiles for streaming applications
(3GPP TS 26.118 version 15.1.0 Release 15)
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3GPP TS 26.118 version 15.1.0 Release 15 1 ETSI TS 126 118 V15.1.0 (2019-04)
Reference
RTS/TSGS-0426118vf10
Keywords
5G
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3GPP TS 26.118 version 15.1.0 Release 15 2 ETSI TS 126 118 V15.1.0 (2019-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
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Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TS 26.118 version 15.1.0 Release 15 3 ETSI TS 126 118 V15.1.0 (2019-04)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 7
Introduction . 7
1 Scope . 8
2 References . 8
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Architectures and Interfaces for Virtual Reality . 10
4.1 Definitions and Reference Systems . 10
4.1.1 Overview . 10
4.1.2 3GPP 3DOF Coordinate System . 11
4.1.3 Video Signal Representation. 13
4.1.4 Audio Signal Representation . 14
4.2 End-to-end Architecture . 15
4.3 Client Reference Architecture . 16
4.4 Rendering Schemes, Operation Points and Media Profiles . 18
4.5 Audio Rendering . 20
4.5.1 Audio Renderer Definitions . 20
4.5.1.1 Reference Renderer . 20
4.5.1.2 Common Informative Binaural Renderer (CIBR) . 20
4.5.1.3 External Renderer . 21
4.5.1.4 Common Renderer API . 21
4.5.1.5 External Renderer API . 21
4.5.1.6 Rendering Test . 22
5 Video . 22
5.1 Video Operation Points . 22
5.1.1 Definition of Operation Point . 22
5.1.2 Parameters of Visual Operation Point . 22
5.1.3 Operation Point Summary . 23
5.1.4 Basic H.264/AVC . 23
5.1.4.1 General . 23
5.1.4.2 Profile and level . 24
5.1.4.3 Aspect Ratios and Spatial resolutions . 24
5.1.4.4 Colour information . 24
5.1.4.5 Frame rates . 24
5.1.4.6 Random access point . 25
5.1.4.7 Sequence parameter set . 25
5.1.4.8 Video usability information . 25
5.1.4.9 Omni-directional Projection Format . 25
5.1.4.10 Restricted Coverage . 26
5.1.4.11 Other VR Metadata . 26
5.1.4.12 Receiver Compatibility . 26
5.1.5 Main H.265/HEVC . 26
5.1.5.1 General . 26
5.1.5.2 Profile and level . 26
5.1.5.3 Bit depth . 27
5.1.5.4 Spatial Resolutions . 27
5.1.5.5 Colour information and Transfer Characteristics . 27
5.1.5.6 Frame rates . 28
ETSI
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3GPP TS 26.118 version 15.1.0 Release 15 4 ETSI TS 126 118 V15.1.0 (2019-04)
5.1.5.7 Random access point . 28
5.1.5.8 Video and Sequence Parameter Sets . 28
5.1.5.9 Video usability information . 29
5.1.5.10 Omni-directional Projection Formats . 29
5.1.5.11 Restricted Coverage . 29
5.1.5.12 Viewport-Optimized Content . 29
5.1.5.13 Frame packing arrangement . 29
5.1.5.14 Other VR Metadata . 30
5.1.5.15 Receiver Compatibility . 30
5.1.6 Flexible H.265/HEVC . 30
5.1.6.1 General . 30
5.1.6.2 Profile and level . 30
5.1.6.3 Bit depth . 31
5.1.6.4 Spatial Resolutions . 31
5.1.6.5 Colour information and Transfer Characteristics . 31
5.1.6.6 Frame rates . 32
5.1.6.7 Random access point . 32
5.1.6.8 Video and Sequence Parameter Sets . 32
5.1.6.9 Video usability information . 33
5.1.6.10 Omni-directional Projection Formats . 33
5.1.6.11 Restricted Coverage . 33
5.1.6.12 Viewport-Optimized Content . 33
5.1.6.13 Frame packing arrangement . 34
5.1.6.14 Other VR Metadata . 34
5.1.6.15 Receiver Compatibility . 34
5.2 Video Media Profiles. 34
5.2.1 Introduction and Overview . 34
5.2.2 Basic Video Media Profile . 35
5.2.2.1 Overview . 35
5.2.2.2 File Format Signaling and Encapsulation . 35
5.2.2.3 DASH Integration . 36
5.2.2.3.1 Definition. 36
5.2.2.3.2 Additional Restrictions for DASH Representations . 36
5.2.2.3.3 DASH Adaptation Set Constraints . 37
5.2.3 Main Video Media Profile . 38
5.2.3.1 Overview . 38
5.2.3.2 File Format Signaling and Encapsulation . 38
5.2.3.3 DASH Integration . 40
5.2.3.3.1 Definition. 40
5.2.3.3.2 Additional Restrictions for DASH Representations . 40
5.2.3.3.3 DASH Adaptation Set Constraints . 40
5.2.3.3.4 Adaptation Set Ensembles for Viewport-Optimized offering. 42
5.2.4 Advanced Video Media Profile . 43
5.2.4.1 Overview . 43
5.2.4.2 File Format Signaling and Encapsulation . 43
5.2.4.3 DASH Integration . 44
5.2.4.3.1 Definition. 44
5.2.4.3.2 Additional Restrictions for DASH Representations . 45
5.2.4.3.3 DASH Adaptation Set Constraints . 46
5.2.4.3.4 Adaptation Set Constraints for Viewport Selection . 48
6 Audio . 48
6.1 Audio Operation Points . 48
6.1.1 Definition of Operation Point . 48
6.1.2 Parameters of Audio Operation Point . 49
6.1.3 Summary of Audio Operation Points . 49
6.1.4 3GPP MPEG-H Audio Operation Point. 49
6.1.4.1 Overview . 49
6.1.4.2 Bitstream requirements . 50
6.1.4.3 Receiver requirements . 50
6.1.4.3.1 General . 50
6.1.4.3.2 Decoding process. 50
ETSI
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3GPP TS 26.118 version 15.1.0 Release 15 5 ETSI TS 126 118 V15.1.0 (2019-04)
6.1.4.3.3 Random Access . 51
6.1.4.3.4 Configuration change . 51
6.1.4.3.5 MPEG-H Multi-stream Audio . 51
6.1.4.3.6 Rendering requirements . 51
6.2 Audio Media Profiles . 53
6.2.1 Introduction and Overview . 53
6.2.2 OMAF 3D Audio Baseline Media Profile . 53
6.2.2.1 Overview . 53
6.2.2.2 File Format Signaling and Encapsulation . 54
6.2.2.2.1 General . 54
6.2.2.2.2 Configuration change constraints . 54
6.2.2.3 Multi-stream constraints . 54
6.2.2.3a Additional Restrictions for DASH Representations . 54
6.2.2.4 DASH Adaptation Set Constraints . 54
6.2.2.4.1 General . 54
6.2.2.4.2 DASH Adaptive Bitrate Switching . 55
7 Metadata . 55
7.1 Presentation without Pose Information to 2D Screens . 55
8 VR Presentation . 55
8.1 Definition . 55
8.2 3GPP VR File . 55
8.3 3GPP VR DASH Media Presentation . 55
Annex A (informative): Content Generation Guidelines . 57
A.1 Introduction . 57
A.2 Video . 57
A.2.1 Overview . 57
A.2.2 Decoded Texture Signal Constraints . 57
A.2.2.1 General . 57
A.2.2.2 Constraints for Main and Flexible H.265/HEVC Operation Point . 57
A.2.3 Conversion of ERP Signals to CMP . 58
A.2.3.1 General . 58
A.2.3.2 Equirectangular Projection (ERP) . 59
A.2.3.3 Cubemap Projection (CMP) . 59
A.2.3.4 Conversion between two projection formats . 61
Annex B (informative): Example External Binaural Renderer . 62
B.1 General . 62
B.2 Interfaces . 62
B.2.1 Interface for Audio Data and Metadata . 62
B.2.2 Head Tracking Interface. . 63
B.2.3 Interface for Head-Related Impulse Responses . 63
B.3 Preprocessing . 63
B.3.1 Channel Content . 63
B.3.2 Object Content . 63
B.3.3 HOA Content .
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