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TS 26.118  SA4 ★
3GPP Virtual Reality Profiles
for Streaming Applications

3GPP‑Page   ETSI‑search   full‑ToC
use "3GPP‑Page" to get the Word version
use "ETSI‑search" to get the PDF version
for a better overview, the Table of Contents (ToC) is reproduced
V15.2.0 (PDF)  2019/09  71 p.
Rapporteur:  Dr. Stockhammer, Thomas
This specification provides technologies for interoperable Virtual Reality services with focus on streaming and consumption. Virtual Reality (VR) is the ability to be virtually present in a space created by the rendering of natural and/or synthetic image and sound correlated by the movements of the immersed user allowing interacting with that world. Suitable media formats for providing immersive experiences are specified to enable Virtual Reality Services in the context of 3GPP bearer and user services.
The present document defines interoperability points for Virtual Reality for streaming services. Specifically, this document defines rendering scheme requirements, media profiles and presentation profiles for Virtual Reality. The specification builds on the findings and conclusions in TR 26.918.

full Table of Contents for  TS 26.118  Word version:   15.2.0

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1  Scope  Word-p. 8
2  References
3  Definitions, symbols and abbreviations  Word-p. 9
3.1  Definitions
3.2  Symbols
3.3  Abbreviations
4  Architectures and Interfaces for Virtual Reality  Word-p. 10
4.1  Definitions and Reference Systems
4.1.1  Overview
4.1.2  3GPP 3DOF Coordinate System  Word-p. 11
4.1.3  Video Signal Representation  Word-p. 13
4.1.4  Audio Signal Representation  Word-p. 14
4.2  End-to-end Architecture  Word-p. 15
4.3  Client Reference Architecture  Word-p. 17
4.4  Rendering Schemes, Operation Points and Media Profiles  Word-p. 18
4.5  Audio Rendering  Word-p. 20
4.5.1  Audio Renderer Definitions
4.5.1.1  Reference Renderer
4.5.1.2  Common Informative Binaural Renderer (CIBR)
4.5.1.3  External Renderer  Word-p. 21
4.5.1.4  Common Renderer API  Word-p. 22
4.5.1.5  External Renderer API
4.5.1.6  Rendering Test
5  Video
5.1  Video Operation Points
5.1.1  Definition of Operation Point
5.1.2  Parameters of Visual Operation Point  Word-p. 23
5.1.3  Operation Point Summary
5.1.4  Basic H.264/AVC  Word-p. 24
5.1.4.1  General
5.1.4.2  Profile and level  Up
5.1.4.3  Aspect Ratios and Spatial resolutions  Word-p. 25
5.1.4.4  Colour information
5.1.4.5  Frame rates
5.1.4.6  Random access point  Word-p. 26
5.1.4.7  Sequence parameter set
5.1.4.8  Video usability information
5.1.4.9  Omni-directional Projection Format
5.1.4.10  Restricted Coverage
5.1.4.11  Other VR Metadata
5.1.4.12  Receiver Compatibility  Word-p. 27
5.1.5  Main H.265/HEVC
5.1.5.1  General
5.1.5.2  Profile and level
5.1.5.3  Bit depth
5.1.5.4  Spatial Resolutions  Word-p. 28
5.1.5.5  Colour information and Transfer Characteristics
5.1.5.6  Frame rates
5.1.5.7  Random access point  Word-p. 29
5.1.5.8  Video and Sequence Parameter Sets
5.1.5.9  Video usability information  Up
5.1.5.10  Omni-directional Projection Formats  Word-p. 30
5.1.5.11  Restricted Coverage
5.1.5.12  Viewport-Optimized Content
5.1.5.13  Frame packing arrangement
5.1.5.14  Other VR Metadata
5.1.5.15  Receiver Compatibility  Word-p. 31
5.1.6  Flexible H.265/HEVC
5.1.6.1  General
5.1.6.2  Profile and level
5.1.6.3  Bit depth  Word-p. 32
5.1.6.4  Spatial Resolutions
5.1.6.5  Colour information and Transfer Characteristics
5.1.6.6  Frame rates  Word-p. 33
5.1.6.7  Random access point
5.1.6.8  Video and Sequence Parameter Sets
5.1.6.9  Video usability information  Word-p. 34
5.1.6.10  Omni-directional Projection Formats
5.1.6.11  Restricted Coverage
5.1.6.12  Viewport-Optimized Content
5.1.6.13  Frame packing arrangement  Word-p. 35
5.1.6.14  Other VR Metadata
5.1.6.15  Receiver Compatibility
5.2  Video Media Profiles
5.2.1  Introduction and Overview
5.2.2  Basic Video Media Profile  Word-p. 36
5.2.2.1  Overview
5.2.2.2  File Format Signaling and Encapsulation
5.2.2.3  DASH Integration  Word-p. 37
5.2.2.3.1  Definition
5.2.2.3.2  Additional Restrictions for DASH Representations  Up
5.2.2.3.3  DASH Adaptation Set Constraints  Word-p. 38
5.2.3  Main Video Media Profile  Word-p. 39
5.2.3.1  Overview
5.2.3.2  File Format Signaling and Encapsulation
5.2.3.3  DASH Integration  Word-p. 41
5.2.3.3.1  Definition
5.2.3.3.2  Additional Restrictions for DASH Representations
5.2.3.3.3  DASH Adaptation Set Constraints
5.2.3.3.4  Adaptation Set Ensembles for Viewport-Optimized offering  Word-p. 43
5.2.4  Advanced Video Media Profile  Word-p. 44
5.2.4.1  Overview
5.2.4.2  File Format Signaling and Encapsulation
5.2.4.3  DASH Integration  Word-p. 46
5.2.4.3.1  Definition
5.2.4.3.2  Additional Restrictions for DASH Representations
5.2.4.3.3  DASH Adaptation Set Constraints  Word-p. 47
5.2.4.3.4  Adaptation Set Constraints for Viewport Selection  Word-p. 49
6  Audio  Word-p. 50
6.1  Audio Operation Points
6.1.1  Definition of Operation Point  Up
6.1.2  Parameters of Audio Operation Point
6.1.3  Summary of Audio Operation Points
6.1.4  3GPP MPEG-H Audio Operation Point  Word-p. 51
6.1.4.1  Overview
6.1.4.2  Bitstream requirements
6.1.4.3  Receiver requirements
6.1.4.3.1  General
6.1.4.3.2  Decoding process
6.1.4.3.3  Random Access  Word-p. 52
6.1.4.3.4  Configuration change  Up
6.1.4.3.5  MPEG-H Multi-stream Audio  Word-p. 53
6.1.4.3.6  Rendering requirements
6.2  Audio Media Profiles  Word-p. 55
6.2.1  Introduction and Overview
6.2.2  OMAF 3D Audio Baseline Media Profile
6.2.2.1  Overview
6.2.2.2  File Format Signaling and Encapsulation
6.2.2.2.1  General
6.2.2.2.2  Configuration change constraints
6.2.2.3  Multi-stream constraints  Word-p. 56
6.2.2.3a  Additional Restrictions for DASH Representations
6.2.2.4  DASH Adaptation Set Constraints
6.2.2.4.1  General
6.2.2.4.2  DASH Adaptive Bitrate Switching
7  Metadata
7.1  Presentation without Pose Information to 2D Screens
8  VR Presentation  Word-p. 57
8.1  Definition
8.2  3GPP VR File
8.3  3GPP VR DASH Media Presentation  Up
A  Content Generation Guidelines  Word-p. 58
A.1  Introduction
A.2  Video
A.2.1  Overview
A.2.2  Decoded Texture Signal Constraints
A.2.2.1  General
A.2.2.2  Constraints for Main and Flexible H.265/HEVC Operation Point
A.2.3  Conversion of ERP Signals to CMP  Word-p. 59
A.2.3.1  General
A.2.3.2  Equirectangular Projection (ERP)  Word-p. 60
A.2.3.3  Cubemap Projection (CMP)  Word-p. 61
A.2.3.4  Conversion between two projection formats  Word-p. 62
B  Example External Binaural Renderer  Word-p. 63
B.1  General
B.2  Interfaces
B.2.1  Interface for Audio Data and Metadata
B.2.2  Head Tracking Interface.  Word-p. 64
B.2.3  Interface for Head-Related Impulse Responses
B.3  Preprocessing
B.3.1  Channel Content  Up
B.3.2  Object Content
B.3.3  HOA Content
B.3.4  Non-diegetic Content
B.4  Scene Displacement Processing  Word-p. 65
B.4.1  General
B.4.2  Applying Scene Displacement Information
B.5  Headphone Output Signal Computation
B.5.1  General
B.5.2  HRIR Selection
B.5.3  Initialization  Up
B.5.4  Convolution and Crossfade  Word-p. 66
B.5.5  Binaural Downmix
B.5.6  Complexity  Word-p. 67
B.5.7  Motion Latency
C  Registration Information  Word-p. 68
C.1  3GPP Registered URIs
D  Change history  Word-p. 69

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