Digital audiobook file format and player requirements

IEC 62571:2011 defines requirements and provides recommendations to publishers, software developers, content providers, and hardware manufacturers for the data structure, usability requirements, playback systems and delivery systems for audiobooks in digital file format. It should be noted that throughout this International Standard, the term audiobook is defined as any audio file or collection of audio files of primarily spoken word content that are played in a linear or specified order. Therefore, spoken word audio with occasional music, a narration of newspaper articles, or other similar spoken word audio is assimilated to audiobooks in this standard. This bilingual version (2011-07) replaces the English version.

General Information

Status
Published
Publication Date
28-Mar-2011
Current Stage
PPUB - Publication issued
Start Date
29-Mar-2011
Completion Date
29-Mar-2011
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IEC 62571:2011 - Digital audiobook file format and player requirements
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IEC 62571
Edition 1.0 2011-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Digital audiobook file format and player requirements
Exigences relatives au format de fichier de livre audio et aux lecteurs
IEC 62571:2011
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62571
Edition 1.0 2011-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Digital audiobook file format and player requirements
Exigences relatives au format de fichier de livre audio et aux lecteurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XE
ICS 33.160.60; 35.240.30 ISBN 978-2-88912-603-3
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – 62571  IEC:2011
CONTENTS

FOREWORD ........................................................................................................................... 7

1 Scope ............................................................................................................................... 9

2 Normative references ....................................................................................................... 9

3 General ............................................................................................................................ 9

4 MultiAudio audiobook extensions .................................................................................... 11

4.1 Table of contents ................................................................................................... 11

4.2 Description ............................................................................................................ 14

4.2.1 General ..................................................................................................... 14

4.2.2 Tag.Identifier ............................................................................................. 14

4.2.3 Tag.OrdinalNumber ................................................................................... 14

4.2.4 Tag.Reserved ............................................................................................ 14

4.2.5 Tag.Length ................................................................................................ 14

4.2.6 Data .......................................................................................................... 14

5 Audiobook extendable structure (AB_ExtStruct) ............................................................. 15

5.1 General ................................................................................................................. 15

5.2 Tag ....................................................................................................................... 15

5.3 Offset to extra data................................................................................................ 15

5.4 Fixed length chunk (AB_FixedChunk) .................................................................... 15

5.4.1 General ..................................................................................................... 15

5.4.2 Example .................................................................................................... 16

5.5 Variable length chunk (AB_VariableChunk) ........................................................... 16

5.5.1 General ..................................................................................................... 16

5.5.2 Example .................................................................................................... 17

5.6 Extra data ............................................................................................................. 18

6 Audiobook header (AB_Header) ..................................................................................... 18

6.1 General ................................................................................................................. 18

6.2 Tag ....................................................................................................................... 18

6.3 AB_Header fixed chunk ......................................................................................... 18

6.3.1 General ..................................................................................................... 18

6.3.2 Tag ............................................................................................................ 19

6.3.3 Audiobook specification major version ....................................................... 19

6.3.4 Audiobook specification minor version ....................................................... 19

6.3.5 Number of audiobooks (N_Bk) ................................................................... 19

6.3.6 Offset to playlist indexes ........................................................................... 19

6.4 AB_Header variable chunk .................................................................................... 19

6.4.1 General ..................................................................................................... 19

6.4.2 Tag ............................................................................................................ 19

6.4.3 Playlist indexes ......................................................................................... 20

6.5 AB_Header extra data ........................................................................................... 20

7 Audiobook book (AB_Book) ............................................................................................ 20

7.1 General ................................................................................................................. 20

7.2 Tag ....................................................................................................................... 21

7.3 AB_Book fixed chunk ............................................................................................ 21

7.3.1 General ..................................................................................................... 21

7.3.2 Tag ............................................................................................................ 22

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62571  IEC:2011 – 3 –

7.3.3 Text format ................................................................................................ 22

7.3.4 Flags ......................................................................................................... 22

7.3.5 TOC_Playlist index .................................................................................... 22

7.3.6 Offset to book title ..................................................................................... 22

7.3.7 Offset to author ......................................................................................... 22

7.3.8 Offset to narrator ....................................................................................... 22

7.3.9 Offset to copyright statement ..................................................................... 22

7.3.10 Offset to audiobook UUID .......................................................................... 22

7.3.11 Offset to book ISBN identifier .................................................................... 23

7.3.12 Offset to book ISSN identifier .................................................................... 23

7.3.13 Offset to book DOI identifier ...................................................................... 23

7.3.14 Offset to book index number ...................................................................... 23

7.3.15 Offset to book shelf number ....................................................................... 23

7.3.16 Offset to book part number ........................................................................ 23

7.3.17 Offset to other identifier ............................................................................. 23

7.3.18 Offset to first audiobook level .................................................................... 23

7.3.19 Offset to playlist content location identifier ................................................ 23

7.4 AB_Book variable chunk ........................................................................................ 24

7.4.1 General ..................................................................................................... 24

7.4.2 Tag ............................................................................................................ 24

7.4.3 Book title ................................................................................................... 24

7.4.4 Author ....................................................................................................... 25

7.4.5 Narrator ..................................................................................................... 25

7.4.6 Copyright Statement .................................................................................. 25

7.4.7 Book UUID ................................................................................................ 25

7.4.8 Book ISBN Identifier .................................................................................. 25

7.4.9 Book ISSN Identifier .................................................................................. 25

7.4.10 Book DOI Identifier .................................................................................... 26

7.4.11 Book index number .................................................................................... 26

7.4.12 Book shelf number ..................................................................................... 26

7.4.13 Book part number ...................................................................................... 26

7.4.14 Other identifier .......................................................................................... 26

7.4.15 First audiobook level ................................................................................. 26

7.4.16 Playlist content location identifier .............................................................. 27

7.5 AB_Book extra data............................................................................................... 27

8 Audiobook level (AB_Level) ............................................................................................ 27

8.1 General ................................................................................................................. 27

8.2 Tag ....................................................................................................................... 28

8.3 AB_Level fixed chunk ............................................................................................ 28

8.3.1 General ..................................................................................................... 28

8.3.2 Tag ............................................................................................................ 28

8.3.3 Text format ................................................................................................ 29

8.3.4 Flags ......................................................................................................... 29

8.3.5 Number of sub-levels ................................................................................. 29

8.3.6 Level number ............................................................................................. 29

8.3.7 TOC_TrackEntry index .............................................................................. 29

8.3.8 Offset to sub-level chunk ........................................................................... 29

8.3.9 Offset to level name .................................................................................. 29

8.3.10 Offset to level description .......................................................................... 29

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– 4 – 62571  IEC:2011

8.3.11 Book time offset ........................................................................................ 29

8.3.12 Time start offset ........................................................................................ 29

8.3.13 Time duration ............................................................................................ 30

8.3.14 Offset to parent AB_Level .......................................................................... 30

8.3.15 Offset to previous AB_Level ...................................................................... 30

8.3.16 Offset to next AB_Level ............................................................................. 30

8.4 AB_Level variable chunk ....................................................................................... 30

8.4.1 General ..................................................................................................... 30

8.4.2 Tag ............................................................................................................ 30

8.4.3 Level name ................................................................................................ 31

8.4.4 Level description ....................................................................................... 31

8.4.5 Sub-level chunk ......................................................................................... 31

8.5 AB_Level extra data .............................................................................................. 31

9 MPV audiobook profiles .................................................................................................. 31

9.1 General ................................................................................................................. 31

9.2 XML schema namespace identifier ........................................................................ 32

9.3 Use of MPV-Music profile identifier ........................................................................ 32

9.4 Audiobook file ....................................................................................................... 33

9.5 Audiobook profile metadata ................................................................................... 33

9.6 MPV audiobook profile metadata ........................................................................... 35

9.7 Dublin core metadata usage .................................................................................. 39

9.8 Audiobook profile using MPV-Music playlists ......................................................... 41

9.8.1 General ..................................................................................................... 41

9.8.2 Number of playlists per MPV file ................................................................ 42

9.8.3 Metadata usage ......................................................................................... 42

9.8.4 Background usage ..................................................................................... 43

9.8.5 Foreground usage ..................................................................................... 44

9.8.6 Related and rendition assets ..................................................................... 44

9.9 Groups of assets in playlists .................................................................................. 44

9.10 MPV-Audiobook schema details ............................................................................ 47

9.10.1 XML schema definition .............................................................................. 47

9.10.2 Audiobook metadata usage definitions ....................................................... 52

9.11 Audiobook level class identifiers ............................................................................ 52

9.12 Audiobook BOOKMARK.AUB ................................................................................ 54

9.13 MPV-Audiobook-Level metadata using .......................................... 61

9.14 Music and Stills Asset ..................................................... 61

9.15 MPV-Audiobook extensions to MPV-Core .............................................................. 64

9.15.1 Audiobook manifest file types and extensions ............................................ 64

9.15.2 Audiobook manifest MIME media type ....................................................... 64

9.16 Media types and file formats .................................................................................. 65

9.17 MPV-Audiobook and CEA-2003-C ......................................................................... 65

9.18 CEA-2003-C binary to XML formats – Tag comparison .......................................... 65

10 Conforming player and digital audiobook file format structure requirements .................... 66

10.1 General ................................................................................................................. 66

10.2 Player Requirements ............................................................................................. 66

10.3 Digital audiobook file format structure requirements .............................................. 67

11 Player and digital audiobook file format structure functionality recommendations ........... 67

11.1 General ................................................................................................................. 67

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62571  IEC:2011 – 5 –

11.2 Player functionality recommendations ................................................................... 67

11.3 Digital audiobook file format structure functionality recommendations ................... 68

12 Digital audiobook file format structures and data constraints .......................................... 68

13 Additional production options .......................................................................................... 68

13.1 ID3 tagging within MP3 files .................................................................................. 68

13.2 M3U playlists ......................................................................................................... 69

13.3 DAISY production options ...................................................................................... 69

14 Certification .................................................................................................................... 69

Annex A (informative) Audiobook structure examples ........................................................... 70

Annex B (normative) Encoding types and identifiers ............................................................ 82

Annex C (informative) Use case and implementation examples: Spoken word audio ............ 83

Bibliography ........................................................................................................................ 104

Figure A.1 – AB_Level structure organization in AB_Book variable length chunk area .......... 74

Figure A.2 – View of an audiobook AB_Level hierarchy ........................................................ 76

Figure C.1 – Example 1 INDEX.AUB ..................................................................................... 88

Figure C.2 – Example 1 TOC.MUM ....................................................................................... 89

Figure C.3 – Example 2 INDEX.AUB ..................................................................................... 94

Figure C.4 – Example 3 INDEX.AUB ..................................................................................... 99

Figure C.5 – Example 4 INDEX.AUB ................................................................................... 103

Table 1 – Table of contents data structure ............................................................................ 12

Table 2 – Audiobook MultiAudio chunk format ....................................................................... 14

Table 3 – AB_ExtStruct format .............................................................................................. 15

Table 4 – Example—AB_FixedChunk structure ..................................................................... 16

Table 5 – Example—AB_FixedChunk structure revised ......................................................... 16

Table 6 – Example—AB_FixedChunk fields .......................................................................... 17

Table 7 – Example—AB_VariableChunk data ........................................................................ 17

Table 8 – AB_Header format ................................................................................................. 18

Table 9 – AB_Header fixed chunk format .............................................................................. 18

Table 10 – AB_Header variable chunk format ....................................................................... 19

Table 11 – AB_Book format .................................................................................................. 21

Table 12 – AB_Book fixed chunk format ................................................................................ 21

Table 13 – AB_Book variable chunk format ........................................................................... 24

Table 14 – AB_Level structure required field settings ........................................................... 26

Table 15 – Playlist content location identifier field settings .................................................... 27

Table 16 – AB_Section format .............................................................................................. 28

Table 17 – AB_Level fixed chunk format ............................................................................... 28

Table 18 – AB_Level variable chunk format .......................................................................... 30

Table 19 – Schema namespace identifier .............................................................................. 32

Table 20 – MPV-Music profile identifier ................................................................................. 32

Table 21 – MPV audiobook profile properties ........................................................................ 34

Table 22 – MPV audiobook profile metadata ......................................................................... 35

Table 23 – Dublin Core metadata (DC-NMF) ......................................................................... 40

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– 6 – 62571  IEC:2011

Table 24 – Metadata properties usage .................................................................................. 42

Table 25 – CEA-2003-C binary and XML formats – Tag comparison ..................................... 65

Table 26 – Examples of ID3 tags .......................................................................................... 69

Table A.1 – Sample table of contents .................................................................................... 70

Table A.2 – Table of contents file structure ........................................................................... 71

Table A.3 – File 1 TOC_TrackEntry structure ........................................................................ 71

Table A.4 – File 2 TOC_TrackEntry structure ........................................................................ 71

Table A.5 – File 3 TOC_TrackEntry structure ........................................................................ 71

Table A.6 – File 4 TOC_TrackEntry structure ........................................................................ 72

Table A.7 – Table of contents with file time offsets ............................................................... 72

Table A.8 – Example TOC_Playlist structure ......................................................................... 72

Table A.9 – Example AB_Book structure ............................................................................... 73

Table A.10 – AB_Level structure at Level 0 (audiobook) ....................................................... 77

Table A.11 – AB_Level at Level 1 (chapter) .......................................................................... 77

Table A.12 – AB_Level at Level 1 (chapter) .......................................................................... 78

Table A.13 – AB_Level at Level 1 (chapter) .......................................................................... 78

Table A.14 – AB_Level at Level 2 (section) ........................................................................... 79

Table A.15 – AB_Level at Level 2 (section) ........................................................................... 79

Table A.16 – AB_Level at Level 2 (section) ........................................................................... 80

Table A.17 – AB_Level at Level 2 (section) ........................................................................... 80

Table A.18 – AB_Level at Level 3 (subsection) .....
...

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