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| Content | Preference | Format | Format Use | Notes | |
|---|---|---|---|---|---|
| Preservation | Delivery | ||||
| Video | Preferred | Codec: JPEG 2000* Wrapper: QuickTime, MXF (MXF OP1a, OP1b operational patterns or AS-07) | X | Recommend lossless compression | |
| Codec: Uncompressed* Wrapper: QuickTime | X | 8 bit or 10 bit | |||
| Codec: DV* Wrapper: QuickTime | X | For digitized DV tape | |||
| Codec: MPEG-2 Wrapper: QuickTime | X | ||||
| Codec: H.264* Wrapper: QuickTime | X | Any of the 21 different profiles; delivered by Streaming Delivery Service (SDS) | |||
| Accepted | Codec: Avid DNxHD* Wrapper: QuickTime, MXF (MXF OP1a, OP1b operational patterns or AS-07) | X | |||
| Codec: Apple ProRes* Wrapper: QuickTime | X | ||||
Disk Image Formats
| Content | Preference | Format | Format Use | Notes | |
|---|---|---|---|---|---|
| Preservation | Delivery | ||||
| Disk Image | Preferred | RAW (IMG,DD) | X | Often disk image formats are split into smaller files that are stitched together in sequence, often in 2GB chunks. When this occurs, many systems use sequential file extension numbering to delineate the relationships, e.g., myimage.001, myimage.002, myimage.003; or yourimage.e01, yourimage.e02, yourimage.e03. When this occurs, it is imperative that original filenames AND extensions be preserved so that they can be re-instantiated upon delivery to an end user (otherwise it will not be possible to put the sequence back together in the proper order). | |
| ISO | X | There are possibilities that some ISO files are merely RAW files that contain ISO file systems within them. Some ISO files may be pure copies of ISO file systems. | |||
| BIN/CUE | X | Often disk image formats are split into smaller files that are stitched together in sequence, often in 2GB chunks. When this occurs, many systems use sequential file extension numbering to delineate the relationships, e.g., myimage.001, myimage.002, myimage.003; or yourimage.e01, yourimage.e02, yourimage.e03. When this occurs, it is imperitave that original filenames AND extensions be preserved so that they can be re-instantiated upon delivery to an end user (otherwise it will not be possible to put the sequence back together in the proper order). Only .BIN files (and sometimes .ISO files) include sidecare .CUE files. The .CUE files serve as metadata for understanding the type and composition of data stored in the .BIN (or .ISO) file. | |||
| EWF-E01 (EWCF-ASR02) | X | Often disk image formats are split into smaller files that are stitched together in sequence, often in 2GB chunks. When this occurs, many systems use sequential file extension numbering to delineate the relationships, e.g., myimage.001, myimage.002, myimage.003; or yourimage.e01, yourimage.e02, yourimage.e03. When this occurs, it is imperitave that original filenames AND extensions be preserved so that they can be re-instantiated upon delivery to an end user (otherwise it will not be possible to put the sequence back together in the proper order). | |||
CAD Formats
Deposit the native CAD file together with a derivative PDF and make both deliverable. The PDF provides an alternative “fixed” preservation copy, providing mitigation for future obsolescence/rendering risks; while the native CAD file provides a truer version of the original, for users who are able to still read the format.
| Content | Preference | Format | Format Use | Notes | |
|---|---|---|---|---|---|
| Preservation | Delivery | ||||
| 2D CAD Drawing | Preferred | Portable Document Format (PDF) | X | X | embed fonts and linked files; delivered by File Delivery Service (FDS) |
| AutoCAD Drawing (DWG) | X | X | embed fonts and linked files; delivered by File Delivery Service (FDS) | ||
| Drawing Interchange Format (AutoCAD DXF) | X | X | embed fonts and linked files; delivered by File Delivery Service (FDS) | ||
| 3D CAD Drawing | Preferred | Portable Document Format (PDF) | X | X | embed fonts and linked files and embedded 3D content in U3D or PRC format; delivered by File Delivery Service (FDS) |
| AutoCAD Drawing (DWG) | X | X | embed fonts and linked files; delivered by File Delivery Service (FDS) | ||
| Drawing Interchange Format (AutoCAD DXF) | X | X | embed fonts and linked files; delivered by File Delivery Service (FDS) | ||
| Extensible 3D Graphics (X3D) | X | X | prefer xml encoding to binary or vrml; delivered by File Delivery Service (FDS) | ||
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Audio Formats
| Content | Preference | Format | Format Use | Notes | |
|---|---|---|---|---|---|
| Preservation | Delivery | ||||
| Audio | Preferred | Waveform Audio (WAV) | X | ||
| MPEG-4 Audio (MP4) | X | ||||
| MPEG 1/2 Audio Layer 3 (MP3) | X | Delivered by Streaming Delivery Service (SDS) | |||
| Accepted | Audio Interchange File Format (AIFF) | X | |||
| RealAudio | X | Delivered by Streaming Delivery Service (SDS) | |||
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