ISO/IEC 29341-4-14:2011

ISO/IEC 29341-4-14
Edition 2.0 2011-09
INTERNATIONAL
STANDARD
colour
inside
Information technology – UPnP device architecture –
Part 4-14: Audio Video Device Control Protocol – Level 2 – Scheduled Recording
Service
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about ISO/IEC copyright or have an enquiry about obtaining additional rights to this
publication, please contact the address below or your local IEC member National Committee for further information.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
 Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
 IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
 Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
 Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
ISO/IEC 29341-4-14
Edition 2.0 2011-09
INTERNATIONAL
STANDARD
colour
inside
Information technology – UPnP device architecture –
Part 4-14: Audio Video Device Control Protocol – Level 2 – Scheduled Recording
Service
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XC
ICS 35.200 ISBN 978-2-88912-683-5

29341-4-14 29341-4-14 XXXX: © IEC:2010 © ISO/IEC:2011(E)© ISO/IEC:2011(E) – 1 –
CONTENTS
1  Overview and Scope . 8
1.1  Introduction . 8
1.2  Notation . 9
1.2.1  Data Types . 9
1.2.2  Strings Embedded in Other Strings . 9
1.2.3  Extended Backus-Naur Form . 10
1.3  Derived Data Types . 10
1.3.1  Comma Separated Value (CSV) Lists . 11
1.4  Management of XML Namespaces in Standardized DCPs . 12
1.4.1  Namespace Prefix Requirements . 14
1.4.2  Namespace Names, Namespace Versioning and Schema Versioning . 15
1.4.3  Namespace Usage Examples . 17
1.5  Vendor-defined Extensions . 18
1.5.1  Vendor-defined Action Names . 18
1.5.2  Vendor-defined State Variable Names . 18
1.5.3  Vendor-defined XML Elements and attributes . 18
1.5.4  Vendor-defined Property Names . 18
1.6  References . 18
2  Service Modeling Definitions . 22
2.1  ServiceType . 22
2.2  Terms and Abbreviations . 22
2.2.1  Abbreviati ons . 22
2.2.2  Terms . 22
2.3  ScheduledRecording Service Architecture . 29
2.3.1  recordSchedule . 29
2.3.2  recordTask . 30
2.4  State Variables . 31
2.4.1  State Variable Overview . 32
2.4.2  SortCapabilities . 32
2.4.3  SortLevelCapability . 32
2.4.4  StateUpdateID . 33
2.4.5  LastChange . 33
2.4.6  A_ARG_TYPE_PropertyList . 36
2.4.7  A_ARG_TYPE_DataTypeID . 36
2.4.8  A_ARG_TYPE_ObjectID . 36
2.4.9  A_ARG_TYPE_ObjectIDList . 36
2.4.10  A_ARG_TYPE_PropertyInfo . 36
2.4.11  A_ARG_TYPE_Index . 37
2.4.12  A_ARG_TYPE_Count . 37
2.4.13  A_ARG_TYPE_SortCriteria . 37
2.4.14  A_ARG_TYPE_RecordSchedule . 37
2.4.15  A_ARG_TYPE_RecordTask . 37
2.4.16  A_ARG_TYPE_RecordScheduleParts . 38
2.5  Eventing and Moderation . 39
2.6  Actions . 40

XXXX: © IEC:2010 – 2 – 29341-4-14 29341-4-14 © ISO/IEC:2011(E)© ISO/IEC:2011(E)
2.6.1  GetSortCapabilities() . 40
2.6.2  GetPropertyList() . 41
2.6.3  GetAllowedValues() . 42
2.6.4  GetStateUpdateID() . 44
2.6.5  BrowseRecordSchedules() . 44
2.6.6  BrowseRecordTasks() . 49
2.6.7  CreateRecordSchedule() . 50
2.6.8  DeleteRecordSchedule() . 53
2.6.9  GetRecordSchedule() . 54
2.6.10  EnableRecordSchedule() . 55
2.6.11  DisableRecordSchedule() . 56
2.6.12  DeleteRecordTask() . 57
2.6.13  GetRecordTask() . 58
2.6.14  EnableRecordTask() . 59
2.6.15  DisableRecordTask() . 60
2.6.16  ResetRecordTask() . 61
2.6.17  GetRecordScheduleConflicts() . 62
2.6.18  GetRecordTaskConflicts() . 63
2.6.19  Common Error Codes . 64
2.7  State Diagram of recordTask . 66
2.7.1  A Full-Featured State Diagram . 66
2.7.2  A Minimal-Implementation State Diagram . 71
2.7.3  recordTask State Example . 74
2.8  ScheduledRecording Service Priority Model . 75
2.8.1  Introduction of the ScheduledRecording Service Priority Model . 75
2.8.2  Ordered Priority within Each Priority Level . 76
2.8.3  Setting the Initial Priority Level of a recordSchedule . 77
2.8.4  Sorting recordSchedule Instances Based on their Current Priority
Settings . 79
2.9  Theory of Operation . 79
2.9.1  Introduction . 79
2.9.2  Checking the Capabilities of a ScheduledRecording Servic e . 79
2.9.3  Adding a Scheduled Recording Entry to the List . 90
2.9.4  Deleting a recordSchedule . 102
2.9.5  Browsing recordSchedule and recordTask instances . 103
2.9.6  Rating System . 108
2.9.7  Conflict Detection and Resolution . 109
3  XML Service Description . 110
4  Test . 118
Annex A (normative) srs XML Document . 119
A.1  A_ARG_TYPE_RecordSchedule AVDT XML Document . 119
A.2  A_ARG_TYPE_RecordTask AVDT XML Document . 120
A.3  A_ARG_TYPE_RecordScheduleParts AVDT XML Document . 120
Annex B (normative) AV Working Committee Extended Properties . 122
B.1  Base Propert ies . 122
B.1.1  @id . 122
B.1.2  title . 122
B.1.3  class . 123
B.1.4  additionalStatusInfo . 123

29341-4-14 29341-4-14 XXXX: © IEC:2010 © ISO/IEC:2011(E)© ISO/IEC:2011(E) – 3 –
B.1.5  cdsReference . 124
B.2  Priority Prop erties . 125
B.2.1  priority . 125
B.2.2  desiredPriority . 126
B.2.3  desiredPriority@type . 128
B.3  Output Control Properties . 128
B.3.1  recordDestination . 128
B.3.2  desiredRecordQuality . 130
B.4  Content Identification Related Properties . 133
B.4.1  scheduledCDSObjectID . 133
B.4.2  scheduledChannelID . 134
B.4.3  scheduledStartDateTime . 136
B.4.4  scheduledDuration . 137
B.4.5  scheduledProgramCode . 137
B.5  Matching Content Criteria Properties . 138
B.5.1  matchingName . 138
B.5.2  matchingID . 139
B.6  Matching Qualifying Criteria Properties . 140
B.6.1  matchingChannelID . 140
B.6.2  matchingStartDateTimeRange . 142
B.6.3  matchingDurationRange . 142
B.6.4  matchingRatingLimit . 143
B.6.5  matchingEpisodeType . 145
B.7  Content Control Properties . 146
B.7.1  totalDesiredRecordTasks . 146
B.7.2  scheduledStartDateTimeAdjust . 146
B.7.3  scheduledDurationAdjust . 147
B.7.4  activePeriod . 147
B.7.5  durationLimit . 148
B.7.6  channelMigration . 149
B.7.7  timeMigration . 149
B.7.8  allowDuplicates . 150
B.8  Storage Related Properties . 150
B.8.1  persistedRecordings . 150
B.9  Schedule State Properties . 152
B.9.1  scheduleState . 152
B.9.2  abnormalTasksExist . 153
B.10  Statistics Properties . 153
B.10.1  currentRecordTaskCount . 154
B.10.2  totalCreatedRecordTasks . 154
B.10.3  totalCompletedRecordTasks . 154
B.11  Task General Properties . 155
B.11.1  recordScheduleID . 155
B.11.2  recordedCDSObjectID . 155
B.12  Task Content Identification Properties . 156
B.12.1  taskCDSObjectID . 156
B.12.2  taskChannelID . 157
B.12.3  taskStartDateTime . 158
B.12.4  taskDuration . 158

XXXX: © IEC:2010 – 4 – 29341-4-14 29341-4-14 © ISO/IEC:2011(E)© ISO/IEC:2011(E)
B.12.5  taskProgramCode . 159
B.12.6  recordQuality . 159
B.13  Task Matched Content Criteria Properti es . 161
B.13.1  matchedName . 161
B.13.2  matchedID . 162
B.14  Task Matched Qualifying Criteria Properties . 163
B.14.1  matchedRating . 163
B.14.2  matchedRating@type . 163
B.14.3  matchedEpisodeType . 163
B.15  Task Matched Content Control Properties . 164
B.15.1  taskStartDateTimeAdjust . 164
B.15.2  taskDurationAdjust . 164
B.15.3  taskDurationLimit . 164
B.15.4  taskDurationLimit@effect . 165
B.15.5  taskChannelMigration . 165
B.15.6  taskTimeMigration . 165
B.16  Task State Properties . 166
B.16.1  taskState . 166
B.17  ContentDirectory Service Imported Proper ties . 175
Annex C (normative) AV Working Committee Class Defi nitions . 180
C.1  Class Hierar chy . 180
C.1.1  Relationships between Classes and Properties . 181
C.1.2  recordScheduleParts Properti es . 182
C.1.3  recordSchedule Properties . 186
C.1.4  recordTask Properties . 190
C.2  Class Definitions . 192
C.3  object Base Class . 193
C.3.1  object.recordSchedule Class . 194
C.3.2  object.recordTask Class . 207
Annex D (normative) EBNF Syntax Definitions . 209
D.1  Priority Syntax . 209
D.2  Date&time Syntax . 209
D.3  Class Name Syntax . 209
Annex E (informative) ScheduledRecording Service Relationship to ContentDirectory
Service . 211
Annex F (informative) ScheduledRecording Service Relationship to EPG . 212
Annex G (informative) AVDT Examples . 213
G.1  A_ARG_TYPE_RecordSchedule AVDT Example . 213
G.2  A_ARG_TYPE_RecordTask AVDT Exam ple . 228
G.3  A_ARG_TYPE_RecordScheduleParts AVDT Example . 244

Figure 1 — Creating a new recordSchedule . 29
Figure 2 — Capability check. . 30
Figure 3 — Browse recordSchedule. . 30
Figure 4 — Delete a recordSchedule . 30
Figure 5 — A Full-Featured State Diagram . 67
Figure 6 — A Minimal-Implementation State Diagram . 72

29341-4-14 29341-4-14 XXXX: © IEC:2010 © ISO/IEC:2011(E)© ISO/IEC:2011(E) – 5 –
Figure 7 — Class hierarchy for the ScheduledRecording service. . 181

Table 1-1 — EBNF Operators . 10
Table 1-2 — CSV Examples . 11
Table 1-3 — Namespace Definitions . 13
Table 1-4 — Schema-related Information . 14
Table 1-5 — Default Namespaces for the AV Specifications . 15
Table 2-1 — Abbr eviations . 22
Table 2-1 — Properties in XML . 25
Table 2-2 — State Variables . 32
Table 2-3 — allowedValueList for the DataTypeID argument . 32
Table 2-4 — Allowed Elements in Element . 34
Table 2-5 — Eventing and Moderation . 39
Table 2-6 — Actions . 40
Table 2-7 — Arguments for GetSortCapabilities() . 40
Table 2-8 — Error Codes for GetSortCapabilities() . 41
Table 2-9 — Arguments for GetPropertyList() . 41
Table 2-10 — Error Codes for GetPropertyList() . 42
Table 2-11 — Arguments for GetAllowedValues() . 42
Table 2-12 — Error Codes for GetAllowedValues() . 43
Table 2-13 — Arguments for GetStateUpdateID() . 44
Table 2-14 — Error Codes for GetStateUpdateID() . 44
Table 2-15 — Arguments for BrowseRecordSchedules() . 44
Table 2-16 — Error Codes for BrowseRecordSchedules() . 48
Table 2-17 — Arguments for BrowseRecordTasks() . 49
Table 2-18 — Error Codes for BrowseRecordTasks() . 50
Table 2-19 — Arguments for CreateRecordSchedule() . 51
Table 2-20 — Error Codes for CreateRecordSchedule() . 53
Table 2-21 — Arguments for DeleteRecordSchedule() . 54
Table 2-22 — Error Codes for DeleteRecordSchedule() . 54
Table 2-23 — Arguments for GetRecordSchedule() . 54
Table 2-24 — Error Codes for GetRecordSchedule() . 55
Table 2-25 — Arguments for EnableRecordSchedule() . 56
Table 2-26 — Error Codes for EnableRecordSchedule() . 56
Table 2-27 — Arguments for DisableRecordSchedule() . 57
Table 2-28 — Error Codes for DisableRecordSchedule() . 57
Table 2-29 — Arguments for DeleteRecordTask() . 57
Table 2-30 — Error Codes for DeleteRecordTask() . 58
Table 2-31 — Arguments for GetRecordTask() . 58
Table 2-32 — Error Codes for GetRecordTask() . 59
Table 2-33 — Arguments for EnableRecordTask() . 59
Table 2-34 — Error Codes for EnableRecordTask() . 60
Table 2-35 — Arguments for DisableRecordTask() . 60

XXXX: © IEC:2010 – 6 – 29341-4-14 29341-4-14 © ISO/IEC:2011(E)© ISO/IEC:2011(E)
Table 2-36 — Error Codes for DisableRecordTask() . 61
Table 2-37 — Arguments for ResetRecordTask() . 61
Table 2-38 — Error Codes for ResetRecordTask() . 62
Table 2-39 — Arguments for GetRecordScheduleConflicts() . 62
Table 2-40 — Error Codes for GetRecordScheduleConflicts() . 63
Table 2-41 — Arguments for GetRecordTaskConflicts() . 63
Table 2-42 — Error Codes for GetRecordTaskConflicts() . 64
Table 2-43 — Common Error Codes . 65
Table 2-44 — recordTask State Timeline . 75
Table 2-45 — Example 1: Fewer recordSchedule instances than the Number of
Supported Priority Levels. . 76
Table 2-46 — Example 2: More recordSchedule instances than the Number of
Supported Priority Levels. . 77
Table 2-47 — Existing recordSchedule Priorities . 78
Table 2-48 — desiredPriority Property Set to “RS-C” . 78
Table 2-49 — desiredPriority Property Set to “HIGHEST”, “L1_HI”, or “RS-A” . 78
Table 2-50 — desiredPriority Property Set to “LOWEST”, “L3_LOW”, or “RS-B” . 79
Table 2-51 — desiredPriority Property Set to “RS-C” . 79
Table B.1 — Base Properties Overvi ew . 122
Table B.2 — allowedValueList for the class Property . 123
Table B.3 — Priority Properties . 125
Table B.4 — allowedValueList for the priority Property . 125
Table B.5 — Primary allowedValueList for the desiredPriority Property . 126
Table B.6 — Additional allowedValueList for the desiredPriority Property . 127
Table B.7 — allowedValueList for the desiredPriority@type Property . 128
Table B.8 — Output Control Properties . 128
Table B.9 — desiredRecordQuality Example . 131
Table B.10 — allowedValueList for the desiredRecordQuality Property . 132
Table B.11 — allowedValueList for the desiredRecordQuality@type Property . 132
Table B.12 — Content Identification Related Properties . 133
Table B.13 — allowedValueList for the scheduledChannelID@type Property . 135
Table B.14 — Matching Content Criteria Properties . 138
Table B.15 — allowedValueList for the matchingName@type Property . 139
Table B.16 — allowedValueList for the matchingID@type Property . 140
Table B.17 — Matching Qualifying Criteria Properties . 140
Table B.18 — allowedValueList for the matchingRatingLimit Property Using the MPAA
Rating System (matchingRatingLimit@type = “MPAA.ORG”) . 143
Table B.19 — allowedValueList for the matchingRatingLimit Property Using the RIAA
Rating System (matchingRatingLimit@type = “RIAA.ORG”) . 144
Table B.20 — allowedValueList for the matchingRatingLimit Property Using the ESRB
Rating System (matchingRatingLimit@type = “ESRB.ORG ”) . 144
Table B.21 — allowedValueList for the matchingRatingLimit Property Using the
TVGUIDELINES Rating System (matchingRatingLimit@type = “TVGUIDELINES.ORG”) . 144
Table B.22 — allowedValueList for the matchingRatingLimit@type Property . 145
Table B.23 — allowedValueList for the matchingEpisodeType Property . 145

29341-4-14 29341-4-14 XXXX: © IEC:2010 © ISO/IEC:2011(E)© ISO/IEC:2011(E) – 7 –
Table B.24 — Content Control Propert ies . 146
Table B.25 — allowedValueList for the durationLimit@effect Property . 149
Table B.26 — Storage Related Properties . 150
Table B.27 — Schedule State Properties . 152
Table B.28 — allowedValueList for the scheduleState Property . 152
Table B.29 — allowedValueList for the scheduleState@currentErrors Property . 153
Table B.30 — Statistics Properti es . 153
Table B.31 — Task General Properties . 155
Table B.32 — Task Content Identification Properties . 156
Table B.33 — recordQuality Example . 160
Table B.34 — allowedValueList for the recordQuality Property . 161
Table B.35 — Task Matched Content Criteria Properties . 161
Table B.36 — Task Matched Qualifying Criteria Properties . 163
Table B.37 — Task Matched Content Control Properties . 164
Table B.38 — State Related Properties . 166
Table B.39 — allowedValueList for the taskState Property . 167
Table B.40 — allowedValueList for the taskState Property . 167
Table B.41 — allowedValueList for the taskState@phase Property . 169
Table B.42 — allowedValueList for the taskState@xxx Properties . 173
Table C.1 — Class Properties Overview for recordScheduleParts usage . 183
Table C.2 — Class Properties Overview for recordSchedule usage . 187
Table C.3 — Class Properties Overview for recordTask usage . 191
Table C.4 — object Base Class Properties . 193
Table C.5 — object.recordSchedule Base Class Properties . 194
Table C.6 — object.recordSchedule.direct Class Properties . 196
Table C.7 — object.recordSchedule.direct.manual Class Properties . 197
Table C.8 — object.recordSchedule.direct.cdsEPG Class Proper ties . 198
Table C.9 — object.recordSchedule.direct.cdsNonEPG Class Properties . 201
Table C.10 — object.recordSchedule.direct.programCode Class Prope rties . 202
Table C.11 — object.recordSchedule.query Class Properties . 203
Table C.12 — object.recordSchedule.query.contentName Class Properties . 205
Table C.13 — object.recordSchedule.query.contentID Class Prop erties . 206
Table C.14 — object.recordTask Base Class Properties . 208

29341-4-14 © ISO/IEC:2011(E)
INFORMATION TECHNOLOGY –
UPNP DEVICE ARCHITECTURE –
Part 4-14: Audio Video Device Control Protocol –
Level 2 – Scheduled Recording Service
FOREWORD
1) ISO (International Organization for Standardization) and IEC (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. Their preparation is entrusted to technical committees; any ISO and
IEC member body interested in the subject dealt with may participate in this preparatory work. International
governmental and non-governmental organizations liaising with ISO and IEC also participate in this preparation.
2) In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote.
3) The formal decisions or agreements of IEC and ISO 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 and ISO member bodies.
4) IEC, ISO and ISO/IEC publications have the form of recommendations for international use and are accepted
by IEC and ISO member bodies in that sense. While all reasonable efforts are made to ensure that the
technical content of IEC, ISO and ISO/IEC publications is accurate, IEC or ISO cannot be held responsible for
the way in which they are used or for any misinterpretation by any end user.
5) In order to promote international uniformity, IEC and ISO member bodies undertake to apply IEC, ISO and
ISO/IEC publications transparently to the maximum extent possible in their national and regional publications.
Any divergence between any ISO/IEC publication and the corresponding national or regional publication
should be clearly indicated in the latter.
6) ISO and IEC provide no marking procedure to indicate their approval and cannot be rendered responsible for
any equipment declared to be in conformity with an ISO/IEC publication.
7) All users should ensure that they have the latest edition of this publication.
8) No liability shall attach to IEC or ISO or its directors, employees, servants or agents including individual experts
and members of their technical committees and IEC or ISO member bodies 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 of, use of, or reliance upon, this ISO/IEC publication or any other IEC,
ISO or ISO/IEC publications.
9) 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.
10) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
International Standard ISO/IEC 29341-4-14 was prepared by UPnP Forum Steering
committee , was adopted, under the fast track procedure, by subcommittee 25:
Interconnection of information technology equipment, of ISO/IEC joint technical committee 1:
Information technology.
This International Standard replaces ISO/IEC 29341-4-14, first edition, published in 2008, and
constitutes a technical revision.
The list of all currently available parts of the ISO/IEC 29341 series, under the general title
Information technology – UPnP device architecture, can be found on the IEC web site.
This International Standard has been approved by vote of the member bodies, and the voting
results may be obtained from the address given on the second title page.
—————————
rd
UPnP Forum Steering committee, UPnP Forum, 3855 SW 153 Drive, Beaverton, Oregon 97006 USA. See also
“Introduction”.
29341-4-14 © ISO/IEC:2011(E)
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 publication using a colour printer.

XXXX: © IEC:2010 – 8 – 29341-4-14 © ISO/IEC:2011(E)
1 Overview and Scope
This service definition is compliant with the UPnP Device Architecture version 1.0. It defines
a service type referred to herein as ScheduledRecording service.
1.1 Introduction
The ScheduledRecording service is a UPnP service that allows control points to schedule the
recording of content. Generally, this content is broadcast content, but this specification does
not limit itself to broadcast content. This service type enables the following functions:
• Create a recordSchedule so that it is added to the list of recordSchedule instances. Each
recordSchedule describes user-level recording instructions for the ScheduledRecording
service.
• Browse a list of recordSchedule instances stored by the ScheduledRecording service.
• Delete a recordSchedule so that it is removed from the list of recordSchedule instances.
• Browse a list of recordTask instances, stored by the ScheduledRecording service. The
ScheduledRecording service may create zero or more recordTask instances for each
recordSchedule. A recordTask represents a discrete recording operation of a
recordSchedule.
• Enable or disable individual recordTask instances.
• Enable or disable a recordSchedule.
• Receive notifications indicating change of recordSchedule or recordTask list.
The ScheduledRecording service does not require a dependency on any UPnP services other
than a co-located ContentDirectory service, which provides the following functions:
• A ContentDirectory service provides channel line-up to allow users to find recordable
channels. A control point may use this metadata when creating a recordSchedule on a
ScheduledRecording service.
• A ContentDirectory service may provide Electronic Program Guide (EPG) features to
allow users to find recordable content. A control point may use this metadata when
creating a recordSchedule on a ScheduledRecording service.
• Contents recorded by the ScheduledRecording service may be exposed by a
ContentDirectory
...