Digital Cinema Initiatives

DCI SYSTEM REQUIREMENTS AND SPECIFICATIONS FOR DIGITAL CINEMA

DCI Specification, Version 1.2 with Errata as of 30 August 2012 Incorporated

 

Digital Cinema Initiatives, LLC (DCI) has adopted a revised Version 1.2 of its Digital Cinema System Specification with errata as of 30 August 2012 incorporated.

The new DCI Specification, Version 1.2 with Errata as of 30 August 2012 Incorporated, dated 10 October 2012, incorporates the 96 erratum previously released for Version 1.2 of the DCI Specification that was dated 7 March 2008. With the integration of these errata into the body of the Specification, readers will now be able to use the Specification without having to cross-reference to these 96 errata.

Future errata will modify the DCI Specification, Version 1.2 with Errata as of 30 August 2012 Incorporated.

Click here for:
Digital Cinema System Specification Version 1.2 with Errata as of 30 August 2012 Incorporated, dated 10 October 2012 (PDF)

Click here for:
Digital Cinema Object-Based Audio Addendum, dated September 9, 2013 (PDF)

Click here for:
DCI Stereoscopic Digital Cinema Addendum, Version 1.0, dated July 11, 2007 (PDF)


 

ERRATA TO DCI DIGITAL CINEMA SYSTEM SPECIFICATION
VERSION 1.2 WITH ERRATA AS OF 30 AUGUST 2012 INCORPORATED

Errata items continue to be evaluated and will be posted after agreement by the DCI membership that the specific erratum needs to modify the DCI Digital Cinema System Specification, Version 1.2 With Errata As Of 30 August 2012 Incorporated. Suggested Erratum issues may be emailed to dci.info@dcimovies.com. Please include "Errata" in the subject line.

DCI SPECIFICATION ERRATA LISTING 1 and 2 -- 21 AUGUST 2013

pdf DOWNLOAD: ERRATA #1 and #2, 21 AUGUST 2013

DCI SPECIFICATION ERRATA LISTING 3-9-- 04 SEPTEMBER 2014

pdf DOWNLOAD: ERRATA #3 to #9, 04 SEPTEMBER 2014

pdf DOWNLOAD: CHAPTER 9 REPLACEMENT

pdf DOWNLOAD: "changes-marked" document
This is a draft document that shows the differences (additions and deletions) between chapters 7 and 9 of the previous DCI Specification, Version 1.2 with Errata as of 30 August 2012 Incorporated, and the current version of the DCSS noted above. The actual documents (not this "changes-marked" document) are the definitive expressions of their respective DCSS versions and prevail in the event any interpretation is required.

ERRATA TO DCI DIGITAL CINEMA SYSTEM SPECIFICATION
VERSION 1.2 WITH ERRATA AS OF 30 AUGUST 2012 INCORPORATED
Erratum Spec. 1.2
with Errata
Incorporated
Page No.
Section(s) Affected Description

1

26

Section
3.3.3

Section 3.3.3 is replaced in its entirety with the following:
3.3.3. Channel Labeling and Channel Routing

Channel labeling indicates where an audio channel is to be reproduced in an auditorium. Channel routing is the process of using these labels to direct each audio channel to the Media Block output that corresponds to the intended loudspeaker or device.

The playback device is required to perform channel routing.

The channel labels and schema in SMPTE ST 429-2 "D-Cinema Packaging-DCP Operational Constraints" shall be utilized.

2

100

Section
9.4.3.5

The following sentence is added to the end of item #5 (i.e., below "b. Audio - Process..."):

The SM shall prevent playout of encrypted content for which the image and sound integrity pack metadata is not present per the requirements of Section 5.3.2.1.

3

100

Section
9.4.3.5

Erratum # 2 has been incorporated into Erratum # 9 (the replacement Chapter 9) and Erratum # 2 is therefore deprecated.

4

64

Section
7.5.4.1

The third and fourth paragraphs of this section shall be replaced with the following (the fourth paragraph remains between Figures 11 and 12):

The Image Media Block can be implemented in a server configuration, as shown in Figure 11. This is where the storage and the Image Media Block are closely coupled. In this configuration, the content data is then pushed to the projector. In this configuration, Link Encryption is required to protect the uncompressed content.

The Image Media Block can also be implemented as a component within the projection system. This provides the option of not requiring Link Encryption. In this configuration, the Image Media Block may use a push or pull method to process essence data from storage, as shown in Figure 12.

5

64

Section
7.5.4.1

In Figure 11, the "FM" with asterisk reference from the Projection System, and the associated " *optional " notation, are removed.

6

65

Section
7.5.4.1

The following paragraph is inserted above the "Note" at the top of page 65:

In addition to the two single Image Media Block (IMB), single projector configurations shown above, this specification provides for Multiple Media Block (MMB) configurations to support multiple projectors and/or the use of an Outboard Media Block (OMB) within the projection booth. See Chapter 9 "SECURITY" for details of MMB and OMB requirements and operation.

7

65

Section
7.5.4.2.1

The following shall replace the existing text of this section:

A Media Block is the device that converts, in real time, the packaged content data from storage into data for playback to downstream devices. The one or more Media Block(s) of the projection booth are required to playback the image, audio and other time-dependent content in a manner that presents a synchronized performance to the audience. Synchronization requirements are as follows:

  • Synchronization of audio and on-screen text to image shall be frame accurate.
  • Synchronization of audio objects shall be accurate to within 10 microseconds (sample accuracy at 96K).
  • The synchronization signal shall include information that represents the current position within the show timeline and shall be accurate to within 10 microseconds.
  • "Locate and play" shall be supported.
  • The synchronization signal shall be defined separately from any essence it may be asked to synchronize, and able to sync multiple media blocks regardless of the essence they are handling.

The sync signal shall be defined independently of an interface or transport mechanism.

8

65

Section
7.5.4.2.2

The following paragraph shall replace the first paragraph of this section:

The main function of a Media Block is to provide a secure environment within which to perform content essence decryption. In support of this Media Blocks shall contain a Security Manager, media decryptor(s) and (as applicable) associated forensic markers. Link Encryption shall be applied to image essence if the associated Media Block is not contained within the projection system.

9

79-148

Section
9.1-9.8
All of Chapter 9

The DCI document DCSS-replacement_Chapter_9--20140904.pdf replaces Chapter 9 in its entirety