EN IEC 62942:2020

SLOVENSKI STANDARD
01-oktober-2020
Format datoteke za profesionalni prenos in izmenjavo digitalnih avdio podatkov
(TA6) (IEC 62942:2019)
File format for professional transfer and exchange of digital audio data (TA6) (IEC
62942:2019)
Dateiformat für die professionelle Übertragung und den Austausch digitaler Audiodaten
(IEC 62942:2019)
Format de fichier pour le transfert et l'échange professionnels de données
audionumériques (IEC 62942:2019)
Ta slovenski standard je istoveten z: EN IEC 62942:2020
ICS:
33.160.99 Druga avdio, video in Other audio, video and
avdiovizuelna oprema audiovisual equipment
35.040.40 Kodiranje avdio, video, Coding of audio, video,
multimedijskih in multimedia and hypermedia
hipermedijskih informacij information
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62942

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2020
ICS 33.160.30
English Version
File format for professional transfer and exchange of digital
audio data
(IEC 62942:2019)
Format de fichier pour le transfert et l'échange Dateiformat für die professionelle Übertragung und den
professionnels de données audionumériques Austausch digitaler Audiodaten
(IEC 62942:2019) (IEC 62942:2019)
This European Standard was approved by CENELEC on 2020-01-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62942:2020 E
European foreword
The text of document 100/3143/CDV, future edition 1 of IEC 62942, prepared by IEC/TC 100 "Audio,
video and multimedia systems and equipment", was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62942:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-10-16
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-01-16
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 62942:2019 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
ISO 3166-1 NOTE Harmonized as EN ISO 3166-1

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
ISO 8601 - Data elements and interchange formats - - -
Information interchange - Representation of
dates and times
ISO/IEC 10646 2017 Information technology - Universal Coded - -
Character Set (UCS)
SMPTE ST 330 2011 SMPTE standard for television - Unique - -
Material Identifier (UMID)
RFC 3629 - UTF-8, User Datagram Protocol - -

IEC 62942 ®
Edition 1.0 2019-12
INTERNATIONAL
STANDARD
File format for professional transfer and exchange of digital audio data

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.30 ISBN 978-2-8322-7722-5

– 2 – IEC 62942:2019 © IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 BWF file . 10
4.1 Existing chunks defined as part of the RIFF Format . 10
4.2 Additional chunks . 10
4.3 Contents of a BWFF . 10
4.4 Broadcast audio extension chunk . 11
4.5 Filename . 13
4.6 Channel usage . 13
4.7 File size . 13
Annex A (normative) RIFF WAVE file format . 14
A.1 General . 14
A.2 Resource Interchange File Format (RIFF) . 14
A.2.1 General . 14
A.2.2 Chunks . 14
A.2.3 RIFF forms . 15
A.3 Waveform audio file format (WAVE) . 15
A.3.1 General . 15
A.3.2 WAVE format chunk . 16
A.3.3 WAVE format categories . 16
A.4 Storage of WAVE data . 19
Annex B (normative) Chunk order . 20
Annex C (normative) Filename conventions . 21
C.1 General . 21
C.2 File-name length . 21
C.3 File-name extension . 21
C.4 File-name character set . 21
Annex D (informative) Multi-channel usage . 23
D.1 General . 23
D.2 Multi-channel audio data packing . 23
D.3 Channel assignments in multi-channel files . 24
D.3.1 General . 24
D.3.2 Distribution and archive . 24
D.3.3 Production recordings . 24
Annex E (informative) Other audio codings . 25
E.1 General . 25
E.2 MPEG files . 25
Annex F (normative) Extended file format (BWF-E) . 26
F.1 General . 26
F.2 Exceeding the 4-GB limit . 26
F.2.1 General . 26
F.2.2 64-bit resource interchange file format (RF64) . 27

IEC 62942:2019 © IEC 2019 – 3 –
F.3 Compatibility between BWF and BWF-E . 28
F.3.1 General . 28
F.3.2 Initialisation as BWF . 28
F.3.3 Transition to BWF-E . 28
F.4 RIFF/WAVE and RF64/WAVE structures . 29
F.4.1 Chunks and structs specific to the RIFF/WAVE format . 29
F.4.2 Chunks and structs specific to the RF64/WAVE (BWF-E) format . 29
Annex G (normative) bext chunk versions . 31
G.1 Version 0 . 31
G.2 Version 1 . 31
G.3 Version 2 . 31
Annex H (normative) Loudness parameters. 32
H.1 Treatment of loudness parameters . 32
H.2 Loudness parameter references . 33
Annex I (informative) Definition of the format for "Unique" Source Identifier (USID) for
use in the field . 34
I.1 USID . 34
I.2 Examples of USIDs . 34
Annex J (informative) Specification of the format for field . 35
J.1 General . 35
J.2 Syntax . 35
J.3 Examples of coding history fields . 35
Annex K (normative) Universal broadcast audio extension chunk . 37
K.1 General . 37
K.2 Contents of a BWFF with 'ubxt' chunk . 37
K.3 Universal broadcast audio extension chunk . 37
Bibliography .
...