Digital cinema (D-cinema) distribution master — Part 9: Image pixel structure level 3 — Serial digital interface signal formatting

ISO 26428-9:2009 defines the formatting and constraints of the level 3 image pixel structure as defined in ISO 26428-1, for transmission over the 1,485 Gb/s dual link serial digital interface in accordance with SMPTE 372M or the 3 Gb/s interface in accordance with SMPTE 424M.

Souche de la distribution du cinéma numérique (cinéma D) — Partie 9: Structure de pixel d'image de niveau 3 — Formatage périodique de signal d'interface numérique

General Information

Publication Date
Technical Committee
Drafting Committee
Current Stage
9060 - Close of review
Start Date
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STANDARD 26428-9
First edition

Digital cinema (D-cinema) distribution
master —
Part 9:
Image pixel structure level 3 — Serial
digital interface signal formatting
Souche de la distribution du cinéma numérique (cinéma D) —
Partie 9: Structure de pixel d'image de niveau 3 — Formatage
périodique de signal d'interface numérique

Reference number
ISO 26428-9:2009(E)
ISO 2009

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ISO 26428-9:2009(E)
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ii © ISO 2009 – All rights reserved

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ISO 26428-9:2009(E)
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.
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 26428-9 was prepared by the Society of Motion Picture and Television Engineers (as
SMPTE 428-9-2008) 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
⎯ 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 9: Image pixel structure level 3 — Serial digital interface signal formatting [equivalent to
SMPTE 428-9]
The following part is under preparation:
⎯ Part 7 Subtitle [equivalent to SMPTE 428-7]

© ISO 2009 – All rights reserved iii

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ISO 26428-9:2009(E)
This part of ISO 26428 comprises SMPTE 428-9-2008 and Annex ZZ (which provides equivalences between
ISO standards and SMPTE standards referenced in the text).

iv © ISO 2009 – All rights reserved

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ISO 26428-9:2009(E)
SMPTE 428-9-2008


D-Cinema Distribution Master —

Image Pixel Structure Level 3 —

Serial Digital Interface Signal Formatting

Page 1 of 11 pages

Table of Contents      Page

Foreword . 2
1  Scope . 3
2  Conformance Notation . 3
3  Normative References . 3
4  SDI Image Data Format Constraints. 4
5  Virtual Interface Data Format. 5
Annex A  Ancillary Data (Normative) . 8
Annex B  Progressive Segmented Frame System (Normative). 9
Annex C  Bibliography (Informative) . 10
Annex D  Document Road Map (Informative). 11

Copyright © 2008 by THE SOCIETY OF
February 14, 2008
595 W. Hartsdale Ave., White Plains, NY 10607
(914) 761-1100
© ISO 2009 – All rights reserved 1

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ISO 26428-9:2009(E)
SMPTE 428-9-2008

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 428-9 was prepared by Technology Committee DC28.

Page 2 of 11 pages
2 © ISO 2009 – All rights reserved

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ISO 26428-9:2009(E)
SMPTE 428-9-2008
1 Scope

This standard defines the formatting and constraints of the DCDM SMPTE 428-1 Level 3 image Pixel
Structure for transmission over the 1.485Gb/s dual link serial digital interface SMPTE 372M or 3Gb/s interface
SMPTE 424M. The Serial Digital Interface (SDI) container parameters for DCDM level 3 are given in Table 1.

Table 1 – SDI container pixel array

X’ Y’ Z’ X’ Y’ Z’

samples sample Interface
DCDM System Lines per
per active periods per total lines
level nomenclature container
frequency fs
line total line per frame
(S/AL) (S/TL)
3 2048 ° 1080/24/P 2048 1080 24 74.25 2750 1125

2 Conformance Notation

Normative text is text that describes elements of the design that are indispensable or contains the
conformance language keywords: "shall", "should", or "may". Informative text is text that is potentially helpful
to the user, but not indispensable, and can be removed, changed, or added editorially without affecting
interoperability. Informative text does not contain any conformance keywords.

All text in this document is, by default, normative, except: the Introduction, any section explicitly labeled as
"Informative" or individual paragraphs that start with "Note:”

The keywords "shall" and "shall not" indicate requirements strictly to be followed in order to conform to the
document and from which no deviation is permitted.

The keywords, "should" and "should not" indicate that, among several possibilities, one is recommended as
particularly suitable, without mentioning or excluding others; or that a certain course of action is preferred but
not necessarily required; or that (in the negative form) a certain possibility or course of action is deprecated
but not prohibited.

The keywords "may" and "need not" indicate courses of action permissible within the limits of the document.

The keyword “reserved” indicates a provision that is not defined at this time, shall not be used, and may be
defined in the future. The keyword “forbidden” indicates “reserved” and in addition indicates that the provision
will never be defined in the future.

A conformant implementation according to this document is one that includes all mandatory provisions
("shall") and, if implemented, all recommended provisions ("should") as described. A conformant
implementation need not implement optional provisions ("may") and need not implement them as described.

3 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this
standard. At the time of publication, the editions indicated were valid. All standards are subject to revision,
and parties to agreements based on this standard are encouraged to investigate the possibility of applying the
most recent edition of the standards indicated below.

SMPTE 291M-2006, Television — Ancillary Data Packet and Space Formatting

SMPTE 428-1-2006, D-Cinema Distribution Master (DCDM) — Image Characteristics
Page 3 of 11 pages
© ISO 2009 – All rights reserved 3

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ISO 26428-9:2009(E)
SMPTE 428-9-2008

4 SDI Image Data Format Constraints

4.1 The serial digital container is a fixed containe

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