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WARNING: All documents in the section have all been replaced with more current versions.

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DCI Specification (DCSS) Archives


 

 

DCSS Version 1.4.2 (dated June 15, 2022) incorporated two prior addenda into the DCSS: [Digital Cinema Object-Based Audio Addendum, dated October 1, 2018] and [DCI Stereoscopic Digital Cinema Addendum, Version 1.0, dated July 11, 2007]. Users will no longer need to refer to these separate addenda.

Click here for archived:
Digital Cinema Object-Based Audio Addendum, dated October 1, 2018 (PDF)
Also see: DCI_Object-Based_Audio_Addendum_Changes-Marked_archived-7-1-2022.pdf

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


 

 

ARCHIVED ADDENDA (integral to the DCSS version 1.4.2) with no editorial changes.

DCI has converted the DV Addendum and HDR Addendum to HTML (and a corresponding new PDF), and approved for publication on the Website on 10/14/22. linked to on the Current DCI Spec page

There are no editorial changes so the version number doesn't change (Still version 1.0)

These two addenda below are the originals of the replaced documents are supplements and integral to the DCSS Version 1.4.2:

Click here for:
DCI High Dynamic Range D-Cinema Addendum, Version 1.0, dated 30 March 2022 (PDF)

Click here for:
DCI Direct View Display D-Cinema Addendum, Version 1.0, dated 30 March 2022 (PDF)


DV Addendum and HDR Addendum to HTML (with a corresponding new PDF), approved for publication on the website on 14 October 2022. There are no editorial changes, so the version number remains 1.0.


 

 

 

June 15, 2022 DCI Specification, DCSS Version 1.4.2

 

Digital Cinema Initiatives, LLC (DCI) has published a new Version 1.4.2 of its Digital Cinema System Specification (DCSS), dated June 15, 2022.

DCSS VERSION 1.4.2

DCSS Version 1.4.2 includes revisions and refinements respecting Object-Based Audio Essence (OBAE), also known as Immersive Audio Bitstream (IAB). Version 1.4.2 also implements post-show log record collection utilizing [SMPTE 430-17 SMS-OMB Communications Protocol Specification]. Figures in the DCSS have also been refreshed.

Furthermore, DCSS Version 1.4.2 incorporates two prior addenda into the DCSS: [Digital Cinema Object-Based Audio Addendum, dated October 1, 2018] and [DCI Stereoscopic Digital Cinema Addendum, Version 1.0, dated July 11, 2007]. Users will no longer need to refer to these separate addenda.

The DCSS 1.4.2 is available as an online HTML edition and as a PDF file. The PDF version contains pagination and includes page numbers whereas the HTML version does not. The PDF version is considered the definitive instance of the Digital Cinema System Specification, Version 1.4.2.

There is also a redline version that compares DCSS 1.4.2 to DCSS 1.4.1, showing additions and deletions. The redline is available in an online HTML or PDF edition. Future DCSS revisions will modify the DCSS Version 1.4.2.

DOCUMENT LINKS

A permanent link to the HTML edition of the DCSS, Version 1.4.2, is:
https://dcss.dcimovies.com/0c0cff34d231b516cb89ae3fad352d5cf37a9515/dcss.html

A direct link to the PDF file of the DCSS, Version 1.4.2, is:
https://dcss.dcimovies.com/0c0cff34d231b516cb89ae3fad352d5cf37a9515/dcss.pdf

A permanent link to the HTML redline of DCSS 1.4.2 and DCSS 1.4.1 is:
https://dcss.dcimovies.com/0c0cff34d231b516cb89ae3fad352d5cf37a9515/dcss-diff.html

A direct link to the PDF file of the redline of DCSS 1.4.2 and DCSS 1.4.1 is:
https://www.dcimovies.com/specification/DCI_DCSS_v141-to-v142redline.pdf

ADDENDA

These two addenda are supplements and integral to the DCSS.

DCI has converted the DV Addendum and HDR Addendum to HTML (with a corresponding new PDF), approved for publication on the website on 14 October 2022. There are no editorial changes, so the version number remains 1.0.


 

ARCHIVED
DCI Releases DCI Specification, DCSS Version 1.4.3
Approved for Distribution on May 24, 2023
Digital Cinema Initiatives, LLC, Member Representative Committee

 

Digital Cinema Initiatives, LLC (DCI) has published a new Version 1.4.3 of its Digital Cinema System Specification (DCSS), approved for distribution May 24, 2023.

ARCHIVED DCSS VERSION 1.4.3

ARCHIVED DCSS Version 1.4.3 includes minor revisions and refinements as follows:

  • Add bandwidth calculations for 48 kHz audio
  • Remove Link Encryption (LE) description and requirements
  • Allow curved Direct View Displays
  • Allow 19 or 20 bits for the FM Location Payload
  • Specify the time period after which playback stops in absence of Integrity Pack Metadata
  • Clarify storage reliability requirements

The ARCHIVED DCSS 1.4.3 is available as an online HTML edition and as a PDF file. The PDF version contains pagination and includes page numbers whereas the HTML version does not. The PDF version is considered the definitive instance of the Digital Cinema System Specification, Version 1.4.3.

There is also a redline version that compares DCSS 1.4.3 to DCSS 1.4.2, showing additions and deletions. The redline is available in an online HTML edition. Future DCSS revisions will modify the DCSS Version 1.4.3.

ARCHIVED DOCUMENT LINKS

A permanent link to the HTML edition of the DCSS, Version 1.4.3, is:
https://documents.dcimovies.com/DCSS/0f7d382dabf6e84847ce7e4413f198f25b81af05/

A direct link to the PDF file of the DCSS, Version 1.4.3, is:
https://documents.dcimovies.com/DCSS/0f7d382dabf6e84847ce7e4413f198f25b81af05/Digital%20Cinema%20System%20Specification.pdf

A permanent link to the HTML redline of DCSS 1.4.3 and DCSS 1.4.2 is:
https://documents.dcimovies.com/DCSS/0f7d382dabf6e84847ce7e4413f198f25b81af05/index-diff.html

ADDENDA (NOT Archived as of Jan 3 2023)

These two addenda are supplements and integral to the DCSS.

DCI has released updated versions of the DV Addendum and the HDR Addendum. Changes against prior versions of the two documents are available as redline links below.

[See Current DCSS]

 


 

 

DCI Compliance Test Plan (CTP) Archives


 
See current CTP: Compliance Test Plan/

ARCHIVED CTP VERSION 1.3.3
Approved for Distribution February 8, 2023

ARCHIVED DOCUMENT 1.3.3 LINKS


CTP Addendum on Testing

Note: this version now incorporates the "CTP Addendum on Testing" into the Section 11.2 of the CTP.

Pursuant to DCI's Compliance Test Plan Change Policy Statement, the release of CTP 1.3.3 constituted a "stage 1" change , taking effect immediately.



CTP 1.4 Archived 10/19/23

CTP 1.4a is the current version on CTP page release NOTE: this release is intended to be substantially identical to release 1.4 as a "stage 1" revision to 1.4 Pursuant to DCI's Compliance Test Plan Change Policy Statement, the release of CTP 1.4 constitutes a "stage 2" revision as it imposes new requirements and so will go into effect in 120 days, Saturday December 02, 2023.

Archived CTP VERSION 1.4
Approved for Distribution July 18, 2023

Release notes

  • Add SDR Direct View, HDR Direct View and HDR Projector test subjects
  • Subject all Media Blocks to timed text rendering test procedures
  • Specify tolerances for SDR projector test procedures and make them pass/fail
  • Replace photometer with spectroradiometer
  • Add stereoscopic image test procedures
  • Renumber tables and figures
  • Use consistent terminology for CMVP testing laboratory

 

DOCUMENT LINKS

 

Pursuant to DCI's Compliance Test Plan Change Policy Statement, the release of CTP 1.4 constitutes a "stage 2" revision as it imposes new requirements and so will go into effect in 120 days, Saturday December 02, 2023.

CTP 1.4a Archived 12/28/23

CTP VERSION 1.4a
Approved for Distribution July 18, 2023

NOTE: this release is intended to be substantially identical to release 1.4.

 

CTP Version 1.4a Release notes

  • Clarify the position of the spectroradiometer at 7.1.1 and 7.5.15
  • Update test procedures 7.5.12 and 7.5.26 to match revised RP 431-2
  • Clarify ambient light requirements for imaging device environments
  • Move CTP Version from row 11 to row 2 in Table 11.1

CTP 1.4a DOCUMENT LINKS

 

Pursuant to DCI's Compliance Test Plan Change Policy Statement, the release of CTP 1.4 constitutes a "stage 2" revision as it imposes new requirements and so will go into effect in 120 days after publication, Saturday December 02, 2023. CTP VERSION 1.4a is a "stage 1" revision to 1.4 and will take effect immediately.


CTP 1.4b Archived 5/1/2024

CTP VERSION 1.4b Approved for Distribution July 1,8 2023

CTP Version 1.4b Summary of changes since CTP Version 1.4a
This release is intended to be substantially identical to release 1.4

CTP Version 1.4b Release notes

  • Rename track file and change duration of A.2.293. HDR Dark Gray Scale
  • Rename track file and change duration of A.2.292. SDR Dark Gray Scale
  • Fix incorrect "SPEAKING" OBAE expectations
  • Rename track file at A.2.251. SDR Stereoscopic Contrast Test Patterns
  • Rename track file at A.2.254. 4K SDR Scaling Test Pattern
  • Table 11.1: add Test Start Date and fix row numbering
  • Bump to DCI common HTML tooling

CTP Addendum Archives



 

 

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