IEC 62481-3:2013

Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 3: Link protection

IEC 62481-3:2013(E) specifies the DLNA link protection guidelines, which are an extension of the DLNA guidelines. DLNA link protection is defined as the protection of a content stream between two devices on a DLNA network from illegitimate observation or interception using the protocols defined within this part of IEC 62481. It references existing technologies for Link Protection and provide mechanisms for interoperability between different implementations as well as integration with the DLNA architecture. This second edition cancels and replaces the first edition published in 2010 and constitutes a technical revision. It includes the following changes:
- includes variable play (trick mode) support;
- includes updates to resolve interoperability issues.

Lignes directrices pour l'interopérabilité des dispositifs domestiques DLNA (Digital Living Network Alliance) - Partie 3: Protection des liaisons

General Information

• Status: Published
• Publication Date: 22-Oct-2013
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• ICS: 35.100.05 - Multilayer applications
• ICS: 35.110 - Networking
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 27-Jul-2017

Relations

• Revises: IEC 62481-3:2010 - Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 3: Link protection
• Effective Date: 05-Sep-2023
• Revised: IEC 62481-3:2017 - Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 3: DLNA link protection
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62481-3
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Digital living network alliance (DLNA) home networked device interoperability
guidelines –
Part 3: Link protection

IEC 62481-3:2013(E)

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THIS PUBLICATION IS COPYRIGHT PROTECTED
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IEC 62481-3

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CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Symbols and abbreviated terms . 11
3.3 Conventions . 14
4 DLNA home network architecture . 14
5 DLNA device model . 14
6 Guideline terminology and conventions . 15
7 Common link protection guidelines . 15
7.1 General . 15
7.2 Conditions for measuring time in message exchanges . 15
7.3 Networking and connectivity . 15
7.3.1 General . 15
7.3.2 New general capability guidelines: Bluetooth NC CP: power saving
modes . 15
7.4 Device discovery and control . 16
7.5 Media management . 16
7.5.1 General . 16
7.5.2 Updates to existing general AV Media Management guidelines . 18
7.5.3 New general AV Media Management guidelines . 19
7.5.4 MediaRenderer device guidelines . 22
7.6 Media Transport . 22
7.6.1 General . 22
7.6.2 Updates to existing general Media Transport guidelines . 23
7.6.3 New general Media Transport guidelines . 23
7.6.4 HTTP transport . 24
7.6.5 RTP transport . 36
7.7 Content conversion device virtualization . 37
7.8 Media Interoperability Unit (MIU) . 37
7.9 Link Protection technology guidelines . 37
7.9.1 Link Protection System: DTCP-IP . 37
7.9.2 Link Protection System: Windows Media DRM for network Devices . 39
8 DTCP-IP Link Protection System guidelines . 39
8.1 General . 39
8.2 CP DTCP-IP general guidelines . 40
8.3 Networking and connectivity . 40
8.3.1 General . 40
8.3.2 New DLNAQOS guidelines: QoS requirement for DTCP-IP traffic . 40
8.3.3 New common device guidelines: NC CP: wireless security. 40
8.4 Device discovery and control . 41
8.5 Media Management . 41
8.5.1 General . 41

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62481-3 © IEC:2013(E) – 3 –
8.5.2 MM CP: DTCP-IP URI . 41
8.5.3 MM CP: mandatory media operations . 41
8.6 Media Transport . 42
8.6.1 HTTP transport . 42
8.6.2 RTP transport . 45
8.7 Content conversion device virtualization . 47
8.8 Media Interoperability Unit (MIU) . 47
8.9 Volume 2: DTCP-IP profiling guidelines . 47
8.9.1 CP DTCP-IP: profile . 47
8.9.2 CP DTCP-IP: profile MIME type definition . 48
8.9.3 CP DTCP-IP: profile protected and unprotected content portions . 49
8.9.4 CP DTCP-IP: profile HTTP encapsulation . 50
8.9.5 DTCP-IP profile encapsulation . 50
9 WMDRM-ND Link Protection System guidelines . 53
9.1 Overview . 53
9.2 General guidelines . 53
9.2.1 CP WMDRM-ND: guidelines . 53
9.2.2 CP WMDRM-ND: support for HTTP . 53
9.2.3 CP WMDRM-ND: support for RTP. 54
9.2.4 CP WMDRM-ND: Registration and Revalidation procedures . 54
9.2.5 CP WMDRM-ND: discovery of Content Receivers . 55
9.3 Networking and connectivity . 56
9.3.1 General . 56
9.3.2 CP WMDRM-ND: QoS guidelines . 56
9.4 Device discovery and control . 56
9.4.1 General . 56
9.4.2 CP WMDRM-ND: additional rules for DMRs . 56
9.5 Media management . 57
9.6 Media Transport . 57
9.6.1 HTTP transport . 57
9.6.2 RTP transport . 62
9.7 Content conversion device virtualization . 65
9.8 Media Interoperability Unit (MIU) . 65
9.9 Volume 2: WMDRM-ND profiling guidelines . 65
9.9.1 General . 65
9.9.2 CP WMDRM-ND: identification of content transferred using
WMDRM-ND . 65
9.9.3 CP WMDRM-ND: Media Format guidelines . 66
9.9.4 CP WMDRM-ND: MIME type . 66
9.9.5 CP WMDRM-ND: Decoder Friendly Alignment Position . 67
9.9.6 CP WMDRM-ND: Media Format Alignment Element . 67
Annex A (informative) An introduction to DLNA seek operations . 68
Bibliography . 76

Figure A.1 – UCDAM definitions for seek operations . 69
Figure A.2 – Full Random Access Data Availability model . 70
Figure A.3 – Limited Random Access Data Availability model Mode 0 . 71
Figure A.4 – Limited Random Access Data Availability model Mode 1 . 72

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– 4 – 62481-3 © IEC:2013(E)
Figure A.5 – Content flow unprotected content . 74
Figure A.6 – Content flow link protected content . 74

Table 1 – Summary of Domain Elements for Full Random Access Data Availability
model . 17
Table 2 – Summary of Domain Elements for Limited Random Access Data Availability
model . 17
Table 3 – AV Media Management guideline changes . 18
Table 4 – Recommended metadata properties . 19
Table 5 – Property type and multi value . 20
Table 6 – Updates to existing general Media Transport guidelines . 23
Table 7 – Updates to existing general HTTP Media Transport guidelines . 24
Table 8 – Updates to existing general HTTP Media Transport for Streaming Transfer
guidelines . 32
Table A.1 – DLNA constructs of Full Random Access Data Availability model . 70
Table A.2 – DLNA Constructs of Limited Random Access Data Availability model . 73

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62481-3 © IEC:2013(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________

DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME
NETWORKED DEVICE INTEROPERABILITY GUIDELINES –

Part 3: Link protection

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
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6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses
arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62481-3 has been prepared technical area 9: Audio, video and
multimedia applications for end-user network, by IEC technical committee 100: Audio, video and
multimedia systems and equipment.
This second edition cancels and replaces the first edition published in 2010. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) includes variable play (trick mode) support;
b) includes updates to resolve interoperability issues.

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– 6 – 62481-3 © IEC:2013(E)
The text of this standard is based on the following documents:
CDV Report on voting
100/1994/CDV 100/2082/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 62481 series, published under the general title Digital living network
alliance (DLNA) home networked device interoperability guidelines, can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

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62481-3 © IEC:2013(E) – 7 –
INTRODUCTION
Consumers are acquiring, viewing, and managing an increasing amount of digital media (photos,
music, and video) on devices in the Consumer Electronics (CE), mobile, and Personal Computer
(PC) domains. As such, they want to conveniently enjoy the content, regardless of the source,
across different devices and locations in the home. The digital home vision integrates the
Internet, mobile, and broadcast networks through a seamless, interoperable network, which will
provide a unique opportunity for manufacturers and consumers alike. In order to achieve this
interoperability, a common set of industry design guidelines is needed that allows vendors to
participate in a growing marketplace, leading to more innovation, simplicity, and value for
consumers. This standard serves that purpose and provides vendors with the information
needed to build interoperable networked platforms and devices for the digital home.
This standard is organized to align with the overall structure of IEC 62481-1 and IEC 62481-2.

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– 8 – 62481-3 © IEC:2013(E)
DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME
NETWORKED DEVICE INTEROPERABILITY GUIDELINES –

Part 3: Link protection



1 Scope
This part of IEC 62481 specifies the DLNA link protection guidelines, which are an extension of
the DLNA guidelines. DLNA link protection is defined as the protection of a content stream
between two devices on a DLNA network from illegitimate observation or interception using the
protocols defined within this part of IEC 62481.
Content protection is an important mechanism for ensuring that commercial content is protected
from piracy and illegitimate redistribution. Link Protection is a technique that enables distribution
of protected commercial content on a home network, thus resulting in greater consumer
flexibility while still preserving the rights of copyright holders and content providers.
The guidelines in this part of IEC 62481 reference existing technologies for Link Protection and
provide mechanisms for interoperability between different implementations as well as
integration with the DLNA architecture.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
IEC 62481-1:2013, Digital Living Network Alliance (DLNA) home networked device
interoperability guidelines – Part 1: Architecture and protocols
IEC 62481-2:2013, Digital Living Network Alliance (DLNA) home networked device
interoperability guidelines – Part 2: DLNA media formats
ISO/IEC 13818-1:2000, Information technology – Generic coding of moving pictures and
associated audio information: Systems
ISO/IEC 14496-2:2004, Information technology – Coding of Audio-Visual Objects – Part 2:
Visual
Amendment 1:2004, Error resilient simple scalable profile
ISO/IEC 29341-3-10, Information technology – UPnP Device Architecture – Part 3-10: Audio
Video Device Control Protocol – Audio Video Transport Service
ISO/IEC 29341-3-11, Information technology – UPnP Device Architecture – Part 3-11: Audio
Video Device Control Protocol – Connection Manager Service
IETF RFC 1191, Path MTU Discovery, J. Mogul, DECWRL, S. Deering, Stanford University,
November 1990
http://www.ietf.org/rfc/rfc1191.txt

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62481-3 © IEC:2013(E) – 9 –
IETF RFC 1738, Uniform Resource Locators (URL), T. Berners-Lee, CERN, L. Masinter Xerox
Corposation, M. McCahill, University of Minnesota, December 1994
http://www.ietf.org/rfc/rfc1738.txt
IETF RFC 2616, Hypertext Transfer Protocol – HTTP/1.1, R. Fielding, UC Irvine, J. Gettys,
Compaq/W3C, J. Mogul, Compaq, H. Frystyk, W3C/MIT, L. Masinter, Xerox, P. Leach,
Microsoft*, T. Berners-Lee, June 1999
http://www.ietf.org/rfc/rfc2616.txt?number=2616
IETF RFC 3550, RTP: A Transport Protocol for Real-Time Applications, H. Schulzrinne,
Columbia University, S. Casner, Packet Design, R. Frederick, Blue Coat Systems Inc., V.
Jacobson, Packet Design, July 2003
http://www.ietf.org/rfc/rfc3550.txt
IETF RFC 3551, RTP Profile for Audio and Video Conferences with Minimal Control, H.
Schulzrinne, Columbia University, S. Casner, Packet Design, July 2003
http://www.ietf.org/rfc/rfc3551.txt
DTCP Volume 1 (informational version), Digital Transmission Content Protection Specification
Volume1, Revision 1.4: February 28, 2005
http://www.dtcp.com/data/info 20050228 dtcp vol 1 1p4.pdf
DTCP Volume 1 Supplement E (informational version), DTCP Volume 1 Supplement E
Mapping DTCP to IP, Revision 1.1: February 28, 2005
http://www.dtcp.com/data/info 20050228 dtcp VISE 1p1.pdf
DTCP Audio Compliance Rules EXHIBIT B-2, Compliance Rules For Licensed Products That
Receive Or Transmit Commercial Audio Works, June 2002
http://www.dtcp.com/data/Compliance_Rules_Audio_020610.pdf
IEEE 802.1Q, IEEE standard for information technology – Telecommunications and
information exchange between systems – IEEE standard for local and metropolitan
areanetworks – Common specifications – Virtual Bridged Local Area Networks
IEEE 802.11, IEEE standard for information technology – Telecommunications and information
exchange between systems – Local and metropolitan area networks-specific requirements –
Part 11: Wireless LAN Medium, Access Control (MAC) and Physical Layer(PHY) specifications
DTCP Adopter Agreement, DTCP Adopter Agreement, Digital Transmission Protection
License Agreement, DTLA Digital Transmission Licensing Administrator, May 2005
http://www.dtcp.com/
WMDRM-ND, Windows Media DRM for Network Devices, Windows Media Technologies
http://wmlicense.smdisp.net/licenserequest/default.asp
RTP Payload format for WMV and WMA, RTP Payload Format for Windows Media Audio and
Video, Microsoft Corporation
http://download.microsoft.com/download/5/5/a/55a7b886-b742-4613-8ea8-d8b8b5c27bbc/RTP
PayloadFormat_for_WMAandWMV_v1.doc
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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– 10 – 62481-3 © IEC:2013(E)
3.1.1
Cleartext
unencrypted content
Note 1 to entry: Within this standard, the content stream after decryption by the upstream content protection system
and before encryption by the Link Protection System.
3.1.2
Cleartext Byte Domain
specification of a byte position in the Cleartext content stream
Note 1 to entry: For a complete explanation of seek operations on link protected content, see Annex A.
3.1.3
Cleartext Byte Seek Request Header
request that a certain position in the Cleartext byte stream be returned
Note 1 to entry: This term is used to signify any of these different transport layer request headers.
Note 2 to entry: When used in a guideline, Cleartext Byte Seek Request Header implies that the guideline applies to
all uses of any of the request headers.
3.1.4
Cleartext Byte Seek Response Header
response that declares the range of bytes returned in the Cleartext byte stream
Note 1 to entry: This term is used to signify any of these different transport layer response headers.
Note 2 to entry: When used in a guideline, this implies that the guideline applies to all uses of any of the request
headers.
3.1.5
Decoder Friendly Alignment Position
position in the bitstream defined for decoder friendly alignment
Note 1 to entry: A Decoder Friendly Alignment Position is always the start of a Media Format Alignment Element.
Generally, the decoder can begin to process data without any other internal state information about the stream. The
decoder can begin processing at that point and create a valid output rendering. This value is defined for the individual
media format profiles that have Decoder Friendly Alignment Positions.
3.1.6
DLNA Link Protection
protection, using DLNA protocol elements as defined in these guidelines, of a content stream
between two devices on a DLNA network from illegitimate observation or interception
3.1.7
Link Protection Alignment Element
unit of content carried within a link protected content stream
Note 1 to entry: This typically starts with a packet header that is defined by the Link Protection System and contains
bytes of the link protected stream.
3.1.8
Link Protection
protection of a content stream between two devices on a DLNA network from illegitimate
observation or interception
3.1.9
Link Protection System
specific collection of technologies with corresponding rules that enable secure content transfer
between two endpoints

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62481-3 © IEC:2013(E) – 11 –
3.1.10
Media Format Alignment Element
unit of content carried within an unprotected content stream
Note 1 to entry: This typically starts at a Decoder Friendly Alignment Position for the given media format and
contains an integral number of
...

IEC 62481-3


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INTERNATIONALE
colour
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Digital living network alliance (DLNA) home networked device interoperability
guidelines –
Part 3: Link protection

Lignes directrices pour l'interopérabilité des dispositifs domestiques DLNA
(Digital Living Network Alliance) –
Partie 3: Protection des liaisons


IEC 62481-3:2013-10(en-fr)

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IEC 62481-3



®



Edition 2.0 2013-10







INTERNATIONAL





STANDARD







NORME


INTERNATIONALE
colour

inside










Digital living network alliance (DLNA) home networked device interoperability

guidelines –

Part 3: Link protection



Lignes directrices pour l'interopérabilité des dispositifs domestiques DLNA

(Digital Living Network Alliance) –


Partie 3: Protection des liaisons














INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.160.01; 35.100.05; 35.110 ISBN 978-2-8322-0589-1




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – IEC 62481-3:2013 © IEC 2013




CONTENTS


1 Scope . 8

2 Normative references . 8


3 Terms, definitions and abbreviated terms . 9

3.1 Terms and definitions . 9

3.2 Symbols and abbreviated terms . 11

3.3 Conventions . 14

4 DLNA home network architecture . 14

5 DLNA device model . 14
6 Guideline terminology and conventions . 15
7 Common link protection guidelines . 15
7.1 General . 15
7.2 Conditions for measuring time in message exchanges . 15
7.3 Networking and connectivity . 15
7.3.1 General . 15
7.3.2 New general capability guidelines: Bluetooth NC CP: power saving
modes . 15
7.4 Device discovery and control . 16
7.5 Media management . 16
7.5.1 General . 16
7.5.2 Updates to existing general AV Media Management guidelines . 18
7.5.3 New general AV Media Management guidelines . 19
7.5.4 MediaRenderer device guidelines . 22
7.6 Media Transport . 22
7.6.1 General . 22
7.6.2 Updates to existing general Media Transport guidelines . 23
7.6.3 New general Media Transport guidelines . 23
7.6.4 HTTP transport . 24
7.6.5 RTP transport . 36
7.7 Content conversion device virtualization . 37
7.8 Media Interoperability Unit (MIU) . 37
7.9 Link Protection technology guidelines . 37
7.9.1 Link Protection System: DTCP-IP . 37

7.9.2 Link Protection System: Windows Media DRM for network Devices . 39
8 DTCP-IP Link Protection System guidelines . 39
8.1 General . 39
8.2 CP DTCP-IP general guidelines . 40
8.3 Networking and connectivity . 40
8.3.1 General . 40
8.3.2 New DLNAQOS guidelines: QoS requirement for DTCP-IP traffic . 40
8.3.3 New common device guidelines: NC CP: wireless security. 40
8.4 Device discovery and control . 41
8.5 Media Management . 41
8.5.1 General . 41
8.5.2 MM CP: DTCP-IP URI . 41
8.5.3 MM CP: mandatory media operations . 41
8.6 Media Transport . 42

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IEC 62481-3:2013 © IEC 2013 – 3 –


8.6.1 HTTP transport . 42

8.6.2 RTP transport . 45

8.7 Content conversion device virtualization . 47

8.8 Media Interoperability Unit (MIU) . 47

8.9 Volume 2: DTCP-IP profiling guidelines . 47

8.9.1 CP DTCP-IP: profile . 47

8.9.2 CP DTCP-IP: profile MIME type definition . 48

8.9.3 CP DTCP-IP: profile protected and unprotected content portions . 49

8.9.4 CP DTCP-IP: profile HTTP encapsulation . 50

8.9.5 DTCP-IP profile encapsulation . 50

9 WMDRM-ND Link Protection System guidelines . 53
9.1 Overview . 53
9.2 General guidelines . 53
9.2.1 CP WMDRM-ND: guidelines . 53
9.2.2 CP WMDRM-ND: support for HTTP . 53
9.2.3 CP WMDRM-ND: support for RTP. 54
9.2.4 CP WMDRM-ND: Registration and Revalidation procedures . 54
9.2.5 CP WMDRM-ND: discovery of Content Receivers . 55
9.3 Networking and connectivity . 56
9.3.1 General . 56
9.3.2 CP WMDRM-ND: QoS guidelines . 56
9.4 Device discovery and control . 56
9.4.1 General . 56
9.4.2 CP WMDRM-ND: additional rules for DMRs . 56
9.5 Media management . 57
9.6 Media Transport . 57
9.6.1 HTTP transport . 57
9.6.2 RTP transport . 62
9.7 Content conversion device virtualization . 65
9.8 Media Interoperability Unit (MIU) . 65
9.9 Volume 2: WMDRM-ND profiling guidelines . 65
9.9.1 General . 65
9.9.2 CP WMDRM-ND: identification of content transferred using

WMDRM-ND . 65
9.9.3 CP WMDRM-ND: Media Format guidelines . 66

9.9.4 CP WMDRM-ND: MIME type . 66
9.9.5 CP WMDRM-ND: Decoder Friendly Alignment Position . 66
9.9.6 CP WMDRM-ND: Media Format Alignment Element . 67
Annex A (informative) An introduction to DLNA seek operations . 68

Figure A.1 – UCDAM definitions for seek operations . 69
Figure A.2 – Full Random Access Data Availability model . 70
Figure A.3 – Limited Random Access Data Availability model Mode 0 . 71
Figure A.4 – Limited Random Access Data Availability model Mode 1 . 72
Figure A.5 – Content flow unprotected content . 74
Figure A.6 – Content flow link protected content . 74

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Table 1 – Summary of Domain Elements for Full Random Access Data Availability

model . 17

Table 2 – Summary of Domain Elements for Limited Random Access Data Availability


model . 17


Table 3 – AV Media Management guideline changes . 18

Table 4 – Recommended metadata properties . 19

Table 5 – Property type and multi value . 20

Table 6 – Updates to existing general Media Transport guidelines . 23


Table 7 – Updates to existing general HTTP Media Transport guidelines . 24

Table 8 – Updates to existing general HTTP Media Transport for Streaming Transfer
guidelines . 32
Table A.1 – DLNA constructs of Full Random Access Data Availability model . 70
Table A.2 – DLNA Constructs of Limited Random Access Data Availability model . 73

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IEC 62481-3:2013 © IEC 2013 – 5 –


INTERNATIONAL ELECTROTECHNICAL COMMISSION

______________



DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME


NETWORKED DEVICE INTEROPERABILITY GUIDELINES –



Part 3: Link protection



FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses
arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62481-3 has been prepared technical area 9: Audio, video and
multimedia applications for end-user network, by IEC technical committee 100: Audio, video and
multimedia systems and equipment.

This second edition cancels and replaces the first edition published in 2010. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) includes variable play (trick mode) support;
b) includes updates to resolve interoperability issues.

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– 6 – IEC 62481-3:2013 © IEC 2013


The text of this standard is based on the following documents:


CDV Report on voting

100/1994/CDV 100/2082/RVC




Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.


This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.


A list of all parts of IEC 62481 series, published under the general title Digital living network
alliance (DLNA) home networked device interoperability guidelines, can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

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IEC 62481-3:2013 © IEC 2013 – 7 –


INTRODUCTION


Consumers are acquiring, viewing, and managing an increasing amount of digital media (photos,

music, and video) on devices in the Consumer Electronics (CE), mobile, and Personal Computer

(PC) domains. As such, they want to conveniently enjoy the content, regardless of the source,

across different devices and locations in the home. The digital home vision integrates the

Internet, mobile, and broadcast networks through a seamless, interoperable network, which will

provide a unique opportunity for manufacturers and consumers alike. In order to achieve this

interoperability, a common set of industry design guidelines is needed that allows vendors to

participate in a growing marketplace, leading to more innovation, simplicity, and value for

consumers. This standard serves that purpose and provides vendors with the information

needed to build interoperable networked platforms and devices for the digital home.
This standard is organized to align with the overall structure of IEC 62481-1 and IEC 62481-2.

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– 8 – IEC 62481-3:2013 © IEC 2013


DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME

NETWORKED DEVICE INTEROPERABILITY GUIDELINES –


Part 3: Link protection








1 Scope


This part of IEC 62481 specifies the DLNA link protection guidelines, which are an extension of
the DLNA guidelines. DLNA link protection is defined as the protection of a content stream
between two devices on a DLNA network from illegitimate observation or interception using the
protocols defined within this part of IEC 62481.
Content protection is an important mechanism for ensuring that commercial content is protected
from piracy and illegitimate redistribution. Link Protection is a technique that enables distribution
of protected commercial content on a home network, thus resulting in greater consumer
flexibility while still preserving the rights of copyright holders and content providers.
The guidelines in this part of IEC 62481 reference existing technologies for Link Protection and
provide mechanisms for interoperability between different implementations as well as
integration with the DLNA architecture.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
IEC 62481-1:2013, Digital Living Network Alliance (DLNA) home networked device
interoperability guidelines – Part 1: Architecture and protocols
IEC 62481-2:2013, Digital Living Network Alliance (DLNA) home networked device
interoperability guidelines – Part 2: DLNA media formats
ISO/IEC 13818-1:2000, Information technology – Generic coding of moving pictures and
associated audio information: Systems

ISO/IEC 14496-2:2004, Information technology – Coding of Audio-Visual Objects – Part 2:
Visual
Amendment 1:2004, Error resilient simple scalable profile
ISO/IEC 29341-3-10, Information technology – UPnP Device Architecture – Part 3-10: Audio
Video Device Control Protocol – Audio Video Transport Service
ISO/IEC 29341-3-11, Information technology – UPnP Device Architecture – Part 3-11: Audio
Video Device Control Protocol – Connection Manager Service
IETF RFC 1191, Path MTU Discovery, J. Mogul, DECWRL, S. Deering, Stanford University,
November 1990
http://www.ietf.org/rfc/rfc1191.txt

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IEC 62481-3:2013 © IEC 2013 – 9 –


IETF RFC 1738, Uniform Resource Locators (URL), T. Berners-Lee, CERN, L. Masinter Xerox

Corposation, M. McCahill, University of Minnesota, December 1994

http://www.ietf.org/rfc/rfc1738.txt


IETF RFC 2616, Hypertext Transfer Protocol – HTTP/1.1, R. Fielding, UC Irvine, J. Gettys,

Compaq/W3C, J. Mogul, Compaq, H. Frystyk, W3C/MIT, L. Masinter, Xerox, P. Leach,

Microsoft*, T. Berners-Lee, June 1999

http://www.ietf.org/rfc/rfc2616.txt?number=2616


IETF RFC 3550, RTP: A Transport Protocol for Real-Time Applications, H. Schulzrinne,

Columbia University, S. Casner, Packet Design, R. Frederick, Blue Coat Systems Inc., V.

Jacobson, Packet Design, July 2003
http://www.ietf.org/rfc/rfc3550.txt
IETF RFC 3551, RTP Profile for Audio and Video Conferences with Minimal Control, H.
Schulzrinne, Columbia University, S. Casner, Packet Design, July 2003
http://www.ietf.org/rfc/rfc3551.txt
DTCP Volume 1 (informational version), Digital Transmission Content Protection Specification
Volume1, Revision 1.4: February 28, 2005
http://www.dtcp.com/data/info 20050228 dtcp vol 1 1p4.pdf
DTCP Volume 1 Supplement E (informational version), DTCP Volume 1 Supplement E
Mapping DTCP to IP, Revision 1.1: February 28, 2005
http://www.dtcp.com/data/info 20050228 dtcp VISE 1p1.pdf
DTCP Audio Compliance Rules EXHIBIT B-2, Compliance Rules For Licensed Products That
Receive Or Transmit Commercial Audio Works, June 2002
http://www.dtcp.com/data/Compliance_Rules_Audio_020610.pdf
IEEE 802.1Q, IEEE standard for information technology – Telecommunications and
information exchange between systems – IEEE standard for local and metropolitan
areanetworks – Common specifications – Virtual Bridged Local Area Networks
IEEE 802.11, IEEE standard for information technology – Telecommunications and information
exchange between systems – Local and metropolitan area networks-specific requirements –
Part 11: Wireless LAN Medium, Access Control (MAC) and Physical Layer(PHY) specifications
DTCP Adopter Agreement, DTCP Adopter Agreement, Digital Transmission Protection
License Agreement, DTLA Digital Transmission Licensing Administrator, May 2005
http://www.dtcp.com/

WMDRM-ND, Windows Media DRM for Network Devices, Windows Media Technologies
http://wmlicense.smdisp.net/licenserequest/default.asp
RTP Payload format for WMV and WMA, RTP Payload Format for Windows Media Audio and
Video, Microsoft Corporation
http://download.microsoft.com/download/5/5/a/55a7b886-b742-4613-8ea8-d8b8b5c27bbc/RTP
PayloadFormat_for_WMAandWMV_v1.doc
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the
...