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Format Description 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 starting from June 2022.
Publication log:
fdd-publishedlog.xlsx (last updated 04/25/2025)
Planned FDDs for June 1, 2024 - May 31, 2025
The list below details the planned FDDs to be added by LC staff from June 2024 - May 2025. This list may change as resources and time permits. More information to come.
- 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)
- MXF_OP1a_D-10, MXF File, OP1a, D-10 in Generic Container (already has a placeholder entry but will be completed with more information)
- MXF_OP1a_JP2_LSY, MXF File, OP1a, Lossy JPEG 2000 in Generic Container (already has a placeholder entry but will be completed with more information)
- MXF_OP1a_UNC, MXF File, OP1a, Uncompressed Images in Generic Container (already has a placeholder entry but will be completed with more information)
- 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
- 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
- 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: Immersive Media, 3D, VR and Animation
- MPEG-I Family, Coded Representation of Immersive Media
- Set 5: Email and PIM
- HEML, HTML Email Markup Language
- MHT or MHTML for email
- Set 6: Miscellaneous
- PyTorch, PyTorch Serialized File Format
- PAR_Family, Parity Volume Set File Format Family
- 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
- SEG-Y, SEG "Ex" or Exchange Tape Format - Geospatial seismic data format
- WOZ, WOZ Disk Image
- A2R, Apple II Flux Disk Image
- CBOR, RFC 8949 Concise Binary Object Representation
- YAML, YAML Ain't Markup Language
- CHM, Microsoft Compiled HTML Help (often used in software documentation)
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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