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TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
Transparent end-to-end
Packet-switched Streaming Service (PSS);
Progressive Download and Dynamic Adaptive Streaming over
HTTP (3GP-DASH)
(3GPP TS 26.247 version 15.4.0 Release 15)
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3GPP TS 26.247 version 15.4.0 Release 15 1 ETSI TS 126 247 V15.4.0 (2018-10)
Reference
RTS/TSGS-0426247vf40
Keywords
LTE,UMTS
ETSI
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DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
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3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
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GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
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3GPP TS 26.247 version 15.4.0 Release 15 2 ETSI TS 126 247 V15.4.0 (2018-10)
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
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
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
.
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 26.247 version 15.4.0 Release 15 3 ETSI TS 126 247 V15.4.0 (2018-10)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 9
Introduction . 9
1 Scope . 10
2 References . 10
3 Definitions, abbreviations and conventions . 12
3.1 Definitions . 12
3.2 Abbreviations . 13
3.3 Conventions . 13
4 Overview . 13
5 System Description . 14
5.1 Overview . 14
5.2 Service Access . 15
5.3 Protocols . 16
5.3.1 General . 16
5.3.2 Partial File Handling . 16
6 Progressive Download over HTTP . 16
6.1 General . 16
6.2 Progressive Download . 17
6.3 3GPP File Format Profiles . 17
7 3GPP Dynamic Adaptive Streaming over HTTP . 17
7.1 System Description. 17
7.2 3GP-DASH Client Model . 18
7.3 3GP-DASH Profiles . 18
7.3.1 General . 18
7.3.2 3GPP Adaptive HTTP Streaming (Release-9 AHS) . 19
7.3.3 3GP-DASH Release-10 Profile. 19
7.3.3.1 Introduction . 19
7.3.4 3GP-DASH Release 11 multiview stereoscopic 3D video profile . 19
7.3.5 3GP-DASH Release 11 frame-packed stereoscopic 3D video profile . 20
7.3.6 Media Codecs . 20
7.3.7 Content Protection . 20
7.3.8 Partial File Handling . 20
7.3.9 3GP-DASH Enhanced Interoperability Point . 21
7.3.10 DASH in TeleVision (TV) over 3GPP Services . 22
8 DASH - Media Presentation . 22
8.1 Introduction . 22
8.2 Media Presentation Description . 23
8.2.1 General . 23
8.2.2 Schema and 3GPP Extension . 23
8.2.3 (void) . 24
8.2.4 (void) . 24
8.3 MPD Assembly . 24
8.4 Hierarchical Data Model . 24
8.4.1 General . 24
8.4.2 Period . 25
8.4.2.1 General . 25
8.4.2.2 Content Offering with Multiple Periods . 25
8.4.3 Adaptation Sets and Representations . 26
ETSI
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3GPP TS 26.247 version 15.4.0 Release 15 4 ETSI TS 126 247 V15.4.0 (2018-10)
8.4.3.1 Overview . 26
8.4.3.2 Common Attributes and Elements . 26
8.4.3.3 Adaptation Set . 27
8.4.3.4 Representation . 28
8.4.3.5 Sub-Representation . 29
8.4.3.6 Content Component . 29
8.4.4 Segments and Segment Information . 30
8.5 MPD Update . 31
8.5.1 General . 31
8.5.2 Media Presentation Description Delta . 31
8.6 Additional Media Presentation Information . 32
8.6.1 Introduction. 32
8.6.2 Program Information. 32
8.6.3 Descriptors . 32
8.7 Base URL Processing . 33
8.8 Event Streams . 33
9 DASH - Usage of 3GPP File Format . 34
9.1 Introduction . 34
9.2 Segment Types and Formats . 34
9.2.1 Introduction. 34
9.2.2 Initialization Segment . 34
9.2.3 Media Segment . 34
9.2.3.1 General . 34
9.2.3.2 Subsegments and Segment Index . 34
9.2.3.3 Subsegment Index . 34
9.2.3.4 3GP-DASH Media Segment Format . 35
9.2.4 Self-Initializing Media Segment . 35
9.2.5 Media Stream and Segment Properties . 35
9.2.5.1 Media Stream Access Points . 35
9.2.5.2 Non-overlapping Segments and Subsegments . 35
9.2.5.3 Bitstream concatenation . 35
9.3 Usage on Server and Client . 35
9.4 Segment Properties with MPD constraints . 35
9.4.1 General . 35
9.4.1.1 Introduction . 35
9.4.1.2 Media Presentation Timeline . 35
9.4.1.3 Segment Index . 36
9.4.2 Segment Alignment . 36
9.4.3 Bitstream Switching . 36
9.4.4 Sub-Representation . 36
10 QoE for Progressive Download and DASH . 36
10.1 General . 36
10.2 QoE Metric Definitions . 36
10.2.1 Introduction. 36
10.2.2 Void . 37
10.2.3 Representation Switch Events. 37
10.2.4 Average Throughput . 37
10.2.5 Initial Playout Delay . 37
10.2.6 Buffer Level . 38
10.2.7 Play List . 38
10.2.8 MPD Information . 40
10.2.9 Playout Delay for Media Start-up . 41
10.2.10 Device information . 41
10.3 Quality Metrics for Progressive Download . 42
10.4 Quality Metrics for DASH . 42
10.5 Quality Reporting Scheme for DASH . 43
10.6 Quality Reporting Protocol. 46
10.6.1 General . 46
10.6.2 Report Format . 46
10.6.3 Reporting Protocols . 50
ETSI
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3GPP TS 26.247 version 15.4.0 Release 15 5 ETSI TS 126 247 V15.4.0 (2018-10)
11 Live Services . 50
11.1 Overview Dynamic and Live Media Presentations . 50
11.2 Dynamic Segment Download . 51
11.2.1 Background and Assumptions . 51
11.2.2 MPD Information and Timing Model . 52
11.2.2.1 MPD Information . 52
11.2.2.2 Segment Information Derivation . 53
11.2.2.2.1 Introduction . 53
11.2.2.2.2 Definitions . 53
11.2.2.2.3 MPD Information . 53
11.2.2.2.4 Period Information . 53
11.2.2.2.5 Representation Information . 54
11.2.2.2.6 Media Time Information of Segment . 54
11.2.2.2.7 Segment List Parameters . 54
11.2.2.2.8 URL Generation with Segment Template . 56
11.2.3 Service Offering Requirements and Guidelines . 56
11.2.3.1 General Service Offering Requirements . 56
11.2.3.2 Dynamic Service Offering Guidelines . 56
11.2.3.2.1 Introduction . 56
11.2.3.2.2 Basic Parameter Settings . 57
11.2.3.3 Content Offering with Periods . 58
11.2.3.3.1 General . 58
11.2.3.4 Joining Recommendation . 60
11.2.4 Client Operation, Recommendations and Guidelines (informative) . 61
11.2.4.1 Basic Operation . 61
11.2.4.2 Joining, Initial Buffering and Playout Recommendations. 63
11.2.4.2.1 General . 63
11.2.4.2.2 Joining at the live edge . 63
11.2.5 Considerations on live edge) . 63
11.3 Live Services with MPD Updates . 64
11.3.1 Background and Assumptions . 64
11.3.2 Preliminaries . 64
11.3.2.1 MPD Information . 64
11.3.2.2 Segment Information Derivation . 65
11.3.3 Service Offering Requirements and Guidelines . 65
11.3.3.1 General . 65
11.3.3.2 Setting the Minimum Update Period Value . 66
11.3.3.3 Permitted Updates in an MPD . 66
11.3.3.4 Last Segment Message . 66
11.3.4 MPD-based Live Client Operation based on MPD . 67
11.4 Provisioning of Live Content in On-Demand Mode . 67
11.4.1 Scenario . 67
11.4.2 Content Offering Requirements and Recommendations . 68
11.4.3 Client Behavior . 68
11.5 Availability Time Synchronization bet
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