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Format Descriptions >> Format Description Categories >> FDD Workplan
Publication Log
The publication log is a frequently updated spreadsheet which lists the FDD short and long name, number, HTML and XML URLs along with the initial publication date as well as if the FDD was authored by LC or contract staff. This is not exactly the same as a change log because it does not record every time an edit is made to an existing FDD because small adjustments are made all the time. Major changes are marked in the �Last significant FDD update� field in the upper right corner of each FDD. Instead, the Publication Log serves as a record for each new FDD added to the website from June 2022 onwards.
Publication log:
fdd-publishedlog.xlsx (last updated 12/9/2025)
Planned FDDs for June 1, 2025 - May 31, 2026
The list below details the planned FDDs to be added by LC staff from June 2025 - May 2026. This list may change as resources and time permits. More information to come.
- Set 1: Audiovisual Content
- MXF_OP1a_D-10, MXF File, OP1a, D-10 in Generic Container
- MXF_OP1a_JP2_LSY, MXF File, OP1a, Lossy JPEG 2000 in Generic Container
- MXF_OP1a_UNC, MXF File, OP1a, Uncompressed Images in Generic Container
- CPP, Cinema Preservation Package SIST EN 17650:2022 - A framework for digital preservation of cinematographic works - The Cinema Preservation Package
- DNxHR, Avid DNxHR Family
- GXF, General Exchange Format SMPTE 360
- Set 2: AI, Immersive Media, 3D, VR and Animation
- Set 3: Email and PIM
- EA-PDF, An archival email format
based on PDF/A
- MHT, MIME HTML File
- Set 4: Textual and Publishing
- ISO/IEC CD 22424, Digital Publishing - EPUB 3 archiving for preservation (EPUB/A) - still in ISO review process
- OCF, Open Container Format - used in EPUB
- DOTX, Microsoft Open Office Document Template
- Set 5: GIS and Geospatial Data
- GPX, GPS Exchange Format (often used for location data applications such as Google Earth and MapMyRun)
- ECW, Enhanced Compression Wavelet
- Set 6: Miscellaneous
- ISO TS 32005: Portable Document Format — PDF 1.7 and 2.0 structure namespace inclusion in ISO 32000-2
- ISO 14289-2 PDF/UA-2
- PDF/A-4e, PDF/A for Engineering, Use of ISO 32000-2 (PDF/A-4): ISO 19005-4, Annex B
- PDF/A-4f, PDF/A for Embedded Files, Use of ISO 32000-2 (PDF/A-4): ISO 19005-4, Annex A
- MathML
- MDI, Microsoft Document Imaging
- CHM, Microsoft Compiled HTML Help
- SMIL_2_1, Synchronized Multimedia Integration Language (SMIL), Version 2.1
- APNG, Animated Portable Network Graphics
- YAML, YAML Ain't Markup Language
Completed FDDs for June 1, 2024 - May 31, 2025
The list below details the completed new FDDs authored by LC staff from June 2024 - May 2025.
- Set 1: Audiovisual Content - MXF
- MXF_RDD48, MXF Archive and Preservation Format Registered Disclosure Document (SMPTE RDD 48)
- MXF_GC_FFV1, MXF Generic Container Mapped to FFV1 Encoding (SMPTE RDD 48 Amd 1)
Set 2: Audiovisual Content - Other formats
- M2TS, MPEG-2 Transport Stream for Blu-ray Discs (BDAV) and AVCHD
- MPEG-TS, MPEG-2 Transport Stream
- MPEG-PS, MPEG-2 Program Stream
- DAMF, Dolby Atmos Master File
- DPP, Disc Description Protocol
- PTX_PTF_PTS, Pro Tools Session Files
- LOGICX, Logic Pro Project Format
- Set 3: Music Notation
- MUS, Finale Legacy Music Notation File
- MUSX,
Finale Music Notation File (2014+)
- ETF,
Finale Enigma Transportable File
- Set 4: Email and PIM
- HEML, HTML Email Markup Language
- Set 5: Miscellaneous
- PyTorch, PyTorch Serialized File Format
- PAR_Family, Parity Volume Set File Format Family
- WOZ, WOZ Disk Image
- A2R, A2R Flux Disk Image
- CBOR, Concise Binary Object Representation
Completed FDDs for June 1, 2023 - May 31, 2024
The list below details the FDDs that were added to the site in from June 2023 - May 2024. Most of this work is part of a contract with Ashley Blewer, Abi Simkovic and Frances Harrell through Myriad Consulting alongside LC-authored contributions as noted.
- Set 1: Mobile device support
- APK, Android Package
- IPA, iOS App Store Package
- Apple_ProRAW, Apple ProRAW
- XAP, Silverlight Application Package
- Set 2: Packaging, software and installation support
- LNK, Microsoft Windows Shortcut File
- DS_Store, Desktop Services Store
- class, Java Virtual Machine Class File Format
- gzip, GZIP
- bzip2, bzip2
- Set 3: 3D, VR and Animation
- 3DM, 3D Model File Format Family
- VRML, Virtual Reality Modeling Language Family
- XYZ, XYZ Point Cloud
- DGN, MicroStation DGN Family
- MA, Maya ASCII Scene File Format
- MB, Maya Binary Scene File Format
- Set 4: Audiovisual
- CAF, Apple Core Audio Format
- USAC, Unified Speech and Audio Coding
- ADM, Audio Definition Model
- NSV, Nullsoft Streaming Video
- SIB, Sibelius Music Notation Format
- IMF_Package, Interoperable Master Format (IMF) (LC authored)
- AV1, AOMedia Video 1 Video Encoding (LC authored)
- SWF_Family, Flash SWF File Format Family (LC authored)
- Set 5: Forensics and disc imaging
- Stream, KryoFlux Stream File
- DFXML, Digital Forensics XML
- MOOF, MOOF Disk Image
- HFE, HxC Floppy Emulator File Format
- Set 6: Email and PIM
- TNEF, Transport Neutral Encapsulation Format
- MLM, GroupWise Email Format
- EMLX, Apple Mail Email Format
- vCard, Virtual Card Format
- Set 7: Imaging
- EXIF_Family, Exchangeable Image File Format (Exif) Family
- JFIF_Family, JPEG File Interchange Format Family
- DNG_1_6, Adobe Digital Negative (DNG), Version 1.6
- AVIF, AV1 Image File Format (LC Authored)
- Set 8: Text
- Set 9: Datasets and Databases
- Set 10: Miscellaneous
- Apple_Fork, AppleDouble Resource Fork
- Lyrx, ArcGIS Layer File
- PEF, Portable Embosser Format
- CDX_Index, CDX Internet Archive Index File (LC authored)
Completed FDDs from June 1, 2022 - May 31, 2023
The list below details FDDs that were added to the site in 2022-2023. Much of this work is the result of a contract with NVision Solutions and contributors Joel Lawhead, Allyson Caridad and Jessica Herr.
- Set 1: Accessibility formats (for supporting audio players and screen readers)
- Set 2: 3D, Virtual Reality and related design formats
- Set 3: Audiovisual captioning and subtitle formats
- Set 4: Geospatial
- Set 5: Miscellaneous Formats
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