Sustainability of Digital Formats: Planning for Library of Congress Collections |
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Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact |
Full name | ISO/IEC 15444-1:2004. Information technology -- JPEG 2000 image coding system -- Part 1: Core coding system, Amendment 1: Codestream Restrictions, Profile 4 (formal name); JPEG 2000 Profile 4 (common name) |
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Description | Implementation of JPEG 2000 Core Coding (Part 1) that constrains the use of variables in the specification ("restricts the codestream") to serve 4K presentations within the Digital Cinema Initiative's DCP_1_0. The restrictions include image size limited to 4,096 x 2,160 pixels, no more than one tile, 12-bit bit depth per component, no more than 6 decomposition levels, CPRL compression order, progression order and tile parts to support the scalable decompression of a 2K image as well as the 4K image, and maximum compressed bytes per frame (aggregate of color components) 1,302,083 (24 fps). Additional general information about JPEG 2000 profiles is provided in the Notes to J2K_C Notes. |
Production phase | Final-state content distribution by those who follow the Digital Cinema Initiative DCP_1_0 specification. |
Relationship to other formats | |
Subtype of | J2K_C, JPEG 2000 Part 1, Core Coding System |
Used by | MXF_GC_JP2, MXF Generic Container Mapped to JPEG 2000 |
Used by | JP2_J2K_C_Profile_3, JP2 File with JPEG 2000 Core Coding, Profile 3 |
LC experience or existing holdings | See J2K_C |
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LC preference | See J2K_C |
Disclosure | Open standard. See J2K_C |
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Documentation | ISO/IEC 15444-1:2004. Information technology - JPEG 2000 image coding system: Core coding system, Amendment 1: Profiles for digital cinema applications (2006) |
Adoption | Employed in the Digital Cinema Package (DCP_1_0) for theatrical distribution. |
Licensing and patents | See J2K_C |
Transparency | See J2K_C |
Self-documentation | See JP2_FF |
External dependencies | See J2K_C |
Technical protection considerations | See JP2_FF; see also DCDM_1_0 and DCP_1_0. |
Still Image | |
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Normal rendering | See J2K_C |
Clarity (high image resolution) | See J2K_C. |
Color maintenance | See J2K_C |
Support for vector graphics, including graphic effects and typography | See JP2_FF |
Support for multispectral bands | Not relevant to this profile. |
Functionality beyond normal rendering | See J2K_C and JP2_FF; see also DCDM_1_0 and DCP_1_0. |
Tag | Value | Note |
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Filename extension | j2c |
Extension for raw codestreams; see also JP2_FF |
Internet Media Type | See related format. | See JP2_FF |
Magic numbers | See related format. | See JP2_FF |
Indicator for profile, level, version, etc. | Rsiz=4 |
The profile indicator is the Rsiz value in the SIZ marker segment |
General | |
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History |
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