Sustainability of Digital Formats
Planning for Library of Congress Collections
Sustainability of Digital Formats
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| Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact | |
| Full name | Module Music Formats (Mods) |
| Description | A group of digital music file types produced by a variety of software applications called trackers. Mod files include sequencing information (similar to MIDI_SD) and waveform samples (generally PCM audio), and may be compared to XMF files. Information about a variety of mod formats is linked from http://pipin.tmd.ns.ac.yu/extra/fileformat/modules/index.htm; several mod file types are enumerated in File type signifiers, below. |
| Production phase | May be used by composers or arrangers for initial-state activities, in middle-state exchange of data or archiving, or for final-state, end-user delivery. |
| LC experience or existing holdings | None |
| LC preference | None established at this time. XMF is likely to be preferred to mods. |
| Disclosure | Little or not documentation. |
| Documentation | None identified at this time. |
| Adoption | Various types of mods are encountered on the web. One commentator writes, "Mods are extremely popular in the demo world and offer a way of making music of an acceptable level of quality rather cheaply." |
| Licensing and patent claims | None investigated by the compilers of this document. |
| Transparency | Unknown; may be relatively transparent. |
| Self-documentation | Unknown. |
| External dependencies | See MIDI_SD and DLS. |
| Technical protection considerations | None known to the compilers of this document. |
| Normal rendering for sound | Good support |
| Fidelity (support for high audio resolution) | Not applicable; fidelity depends upon the performance of external hardware and software. |
| Support for multiple sound channels | [Same as MIDI_SD ?] |
| Support for downloadable or user-defined sounds, samples, and patches | Yes |
| Functionality beyond normal rendering for sound | Not investigated at this time |
| Tag type | Value | Note |
| Filename Extension | 669, amf, dmf, far, it, med, mod, mt2, mtm, okt, s3m, stm, ult, wow, xm | From the list of extensions and associated tracker programs at www.modplug.com. Additional signifier information for some mod types is provided in the following three-row sets. |
| Filename Extension | 669 | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | application/playerpro | For 669 (669 Tracker Module), from The File Extension Source. |
| Magic numbers | Hex: 4A 4E ASCII: JN or Hex: 69 66 ASCII: if | For 669 (669 Tracker Module), from The File Extension Source. |
| Filename Extension | dmf | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | None identified | |
| Magic numbers | Hex: 44 44 4D 46 ASCII: DDMF | For dmf (Delusion/XTracker Digital Music File), from The File Extension Source. |
| Filename Extension | far | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | None identified | |
| Magic numbers | Hex: 46 41 52 FE ASCII: FAR | For far (Farandoyle Tracker Music Module), from The File Extension Source. |
| Filename Extension | it | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | audio/it | For it (Impulse Tracker Music Module), from The File Extension Source. |
| Magic numbers | Hex: 49 4D 50 4D ASCII: IMPM | For it (Impulse Tracker Music Module), from The File Extension Source. |
| Filename Extension | med | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | application/soundapp audio/med audio/x-mod | For med (Amiga MED/OctaMED Tracker Module Sound File), from The File Extension Source. |
| Magic numbers | Hex: 4D 4D 44 ASCII: MMD | For med (Amiga MED/OctaMED Tracker Module Sound File), from The File Extension Source. |
| Filename Extension | mtm | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | None identified | |
| Magic numbers | Hex: 4D 54 4D ASCII: MTM | For mtm (MultiTracker Music Module), from The File Extension Source. |
| Filename Extension | okt | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | application/soundapp | For okt (Oktalyzer Tracker Module), from The File Extension Source. |
| Magic numbers | Hex: 4F 4B 54 41 53 4F 4E 47 43 4D 4F 44 ASCII: OKTASONGCMOD | For okt (Oktalyzer Tracker Module), from The File Extension Source. |
| Filename Extension | s3m | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | audio/s3m audio/x-s3m | For s3m (ScreamTracker v3 Sound File), from The File Extension Source. |
| Magic numbers | Hex (position 25): 00 00 00 1A 10 00 00 | For s3m (ScreamTracker v3 Sound File), from The File Extension Source. |
| Filename Extension | xm | From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | audio/xm audio/x-xm audio/module-xm audio/mod audio/x-mod | For xm (Fast Tracker 2 Extended Module), from The File Extension Source. |
| Magic numbers | Hex: 45 78 74 65 6E 64 65 64 20 6D 6F 64 75 6C 65 3A 20 ASCII: Extended module: | For xm (Fast Tracker 2 Extended Module), from The File Extension Source. |
| General | |
| History |
URLs
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URLs
• http://www.modplug.com/, a site for users
• List of extensions and associated tracker programs (http://www.modplug.com/modfaq/2.html)
• Segment of a format-oriented web site devoted to mod formats (http://pipin.tmd.ns.ac.yu/extra/fileformat/modules/index.htm)
• The File Extension Source (http://filext.com/)
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