ISO 26428-11:2011

INTERNATIONAL ISO
STANDARD 26428-11
First edition
2011-12-15
Digital cinema (D-cinema) distribution
master —
Part 11:
Additional frame rates
Souche de la distribution du cinéma numérique (cinéma D) —
Partie 11: Cadences de prise de vue supplémentaire

Reference number
©
ISO 2011
©  ISO 2011
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ii © ISO 2011 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 26428-11 was prepared by the Society of Motion Picture and Television Engineers (as
SMPTE 428-11-2009) and was adopted, under a special “fast-track procedure”, by Technical Committee
ISO/TC 36, Cinematography, in parallel with its approval by the ISO member bodies.
ISO 26428 consists of the following parts, under the general title Digital cinema (D-cinema) distribution
master:
 Part 1: Image characteristics [equivalent to SMPTE 428-1]
 Part 2: Audio characteristics [equivalent to SMPTE 428-2]
 Part 3: Audio channel mapping and channel labeling [equivalent to SMPTE 428-3]
 Part 7: Subtitle [equivalent to SMPTE 428-7]
 Part 9: Image pixel structure level 3 — Serial digital interface signal formatting [equivalent to
SMPTE 428-9]
 Part 11: Additional frame rates [equivalent to SMPTE 428-11]
 Part 19: Serial digital interface signal formatting for additional frame rates level AFR2 and level AFR4
[equivalent to SMPTE 428-19]
Introduction
This part of ISO 26428 comprises SMPTE 428-11-2009 and Annex ZZ (which provides equivalences between
ISO standards and SMPTE standards referenced in the text).

iv © ISO 2011 – All rights reserved

SMPTE 428-11-2009
SMPTE STANDARD
Additional Frame Rates
for D-Cinema
Page 1 of 6 pages
Table of Contents      Page

Foreword . 2
Intellectual Property . 2
Introduction . 2
1  Scope . 3
2  Conformance Notation . 3
3  Normative References . 3
4  Glossary of Acronyms and Terms. 4
5  Additional Frame Rate Values . 4
5.1  Definition of AFR Levels . 4
5.2  D-Cinema Sound Sample Rates. 5
Annex A  Bibliography (Informative) . 6

Approved
MOTION PICTURE AND TELEVISION ENGINEERS
April 15, 2009
3 Barker Avenue, White Plains, NY 10601
(914) 761-1100
SMPTE 428-11-2009
Foreword
SMPTE (the Society of Motion Picture and Television Engineers) is an internationally-recognized standards
developing organization. Headquartered and incorporated in the United States of America, SMPTE has
members in over 80 countries on six continents. SMPTE’s Engineering Documents, including Standards,
Recommended Practices and Engineering Guidelines, are prepared by SMPTE’s Technology Committees.
Participation in these Committees is open to all with a bona fide interest in their work. SMPTE cooperates
closely with other standards-developing organizations, including ISO, IEC and ITU.

SMPTE Engineering Documents are drafted in accordance with the rules given in Part XIII of its
Administrative Practices.
SMPTE Standard 428-11 was prepared by Technology Committee 21DC.

Intellectual Property
At the time of publication no notice had been received by SMPTE claiming patent rights essential to the
implementation of this [Standard/Recommended Practice]. However, attention is drawn to the possibility that
some of the elements of this document may be the subject of patent rights. SMPTE shall not be held
responsible for identifying any or all such patent rights.

Introduction
This section is entirely informative and does not form an integral part of this Engineering Document.

The frame rates currently standardized by the DC28 D-Cinema Technology Committee are 24 and 48 frames
per second (fps).
The history of film making is littered with other frame rates ranging from less than 16 fps to 60 fps and beyond
and there is considerable support for the making of films using readily available equipment made specifically
for the film production market.

This standard defines how implementations that conform to the D-Cinema specifications can be extended to
support the additional frame rates of 25 fps, 30 fps, 50 fps and 60 fps.

Page 2 of 6 pages
SMPTE 428-11-2009
1 Scope
...