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/_sources/registries/fdd/fddXML/fdd000121.xml

https://github.com/digipres/digipres.github.io
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  1. <?xml version="1.0" encoding="UTF-8"?>

    2. 

  2. <fdd:FDD id="fdd000121" titleName="XMF, eXtensible Music File Format, Version 1.0" shortName="XMF_1_0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:fdd="http://www.digitalpreservation.gov/formats/schemas/fdd/v1" xsi:schemaLocation="http://www.digitalpreservation.gov/formats/schemas/fdd/v1 http://www.digitalpreservation.gov/formats/schemas/fdd/v1/fdd-v1-0.xsd">

    3. 

  3. 	<fdd:properties>

    4. 

  4. 		<fdd:gdfrGenreSelection>

    5. 

  5. 			<fdd:gdfrGenre>sound</fdd:gdfrGenre>

    6. 

  6. 		</fdd:gdfrGenreSelection>

    7. 

  7. 		<fdd:formatCategories>

    8. 

  8. 			<fdd:category>file-format</fdd:category>

    9. 

  9. 		</fdd:formatCategories>

    10. 

  10. 		<fdd:gdfrComposition>container-wrapper</fdd:gdfrComposition>

    11. 

  11. 		<fdd:gdfrForm>binary</fdd:gdfrForm>

    12. 

  12. 		<fdd:updates>

    13. 

  13. 			<fdd:date>2011-02-28</fdd:date>

    14. 

  14. 		</fdd:updates>

    15. 

  15. 		<fdd:draftStatus>Partial</fdd:draftStatus>

    16. 

  16. 	</fdd:properties>

    17. 

  17. 	<fdd:identificationAndDescription>

    18. 

  18. 		<fdd:fullName>XMF, eXtensible Music File Format, Version 1.0</fdd:fullName>

    19. 

  19. 		<fdd:description>

    20. 

  20. 			<p>XMF is a wrapper format for MIDI, Downloadable Sounds (DLS), and WAVE waveform data. From the <a href="http://www.midi.org/techspecs/xmf/xmf.php">specification</a> from MIDI.org: "XMF is low-overhead meta-file format . . . .  primarily intended to bundle existing standard music and sound file formats--such as <a href="fdd000119.shtml">SMF</a>, <fddLink id="fdd000118">DLS_1_1b</fddLink>, and <fddLink id="fdd000001">WAV</fddLink>--and not to replace any of them." (RP-030, p.2)  MIDI and audio data may be encapsulated in the XMF file or be linked via external URI reference. The <a href="http://www.midi.org/techspecs/xmf/xmf_faq.php">MIDI Manufacturers Association FAQ</a> states, "The most popular use of XMF is currently for mobile phone content, via the Mobile XMF file type."</p>

    21. 

  21. 			<p>The second part of the specification (RP-031) discusses <i>Type 0</i> and <i>Type 1</i> files: "both must contain at least one SMF file; inclusion of DLS files is optional" (p. 1), and "the SMF file images in an XMF <i>Type 0</i> file are guaranteed to be streamable." (RP-031, p. 2) [Is there a type that only contains external references to SMF and/or DLS data?]</p>

    22. 

  22. 			<p>Later versions of the meta file format (1.01 and 2.0 at this writing) define a set of four file types as outlined in Notes below.</p>

    23. 

  23. 		</fdd:description>

    24. 

  24. 		<fdd:shortDescription>Wrapper format for MIDI, Downloadable Sounds (DLS), and WAVE waveform data.  The most popular use of XMF is for mobile phone content, via the Mobile XMF variant.</fdd:shortDescription>

    25. 

  25. 		<fdd:productionPhase>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.</fdd:productionPhase>

    26. 

  26. 		<fdd:relationships>

    27. 

  27. 			<fdd:relationship>

    28. 

  28. 				<fdd:typeOfRelationship>May contain</fdd:typeOfRelationship>

    29. 

  29. 				<fdd:relatedTo>

    30. 

  30. 					<fdd:id>fdd000119</fdd:id>

    31. 

  31. 					<fdd:shortName>SMF</fdd:shortName>

    32. 

  32. 					<fdd:titleName>Standard MIDI File Format</fdd:titleName>

    33. 

  33. 				</fdd:relatedTo>

    34. 

  34. 			</fdd:relationship>

    35. 

  35. 			<fdd:relationship>

    36. 

  36. 				<fdd:typeOfRelationship>May contain</fdd:typeOfRelationship>

    37. 

  37. 				<fdd:relatedTo>

    38. 

  38. 					<fdd:id>fdd000118</fdd:id>

    39. 

  39. 					<fdd:shortName>DLS_1_1b</fdd:shortName>

    40. 

  40. 					<fdd:titleName>Downloadable Sounds Format, Version 1.1b</fdd:titleName>

    41. 

  41. 				</fdd:relatedTo>

    42. 

  42. 			</fdd:relationship>

    43. 

  43. 			<fdd:relationship>

    44. 

  44. 				<fdd:typeOfRelationship>Has later version</fdd:typeOfRelationship>

    45. 

  45. 				<fdd:comment>XMF, eXtensible Music File Format, Version 1.01, not documented at this Web site.</fdd:comment>

    46. 

  46. 			</fdd:relationship>

    47. 

  47. 			<fdd:relationship>

    48. 

  48. 				<fdd:typeOfRelationship>Has later version</fdd:typeOfRelationship>

    49. 

  49. 				<fdd:comment>XMF, eXtensible Music File Format, Version 2.00, not documented at this Web site.</fdd:comment>

    50. 

  50. 			</fdd:relationship>

    51. 

  51. 		</fdd:relationships>

    52. 

  52. 	</fdd:identificationAndDescription>

    53. 

  53. 	<fdd:localUse>

    54. 

  54. 		<fdd:experience>None</fdd:experience>

    55. 

  55. 		<fdd:preference>None established at this time</fdd:preference>

    56. 

  56. 	</fdd:localUse>

    57. 

  57. 	<fdd:sustainabilityFactors>

    58. 

  58. 		<fdd:disclosure>Fully documented.  Developed by the <a href="http://www.midi.org/">MIDI Manufacturers Association</a>.

    59. 

  59. 		</fdd:disclosure>

    60. 

  60. 		<fdd:documentation>The <i>XMF (eXtensible Music Format), Version 1.0</i> (2001) contains three parts: RP-030, general specification; RP-031, Type 1 and Type 0 files; and RP-032, meta event and patch type prefix.  As of February 2011, this version was no longer offered from <a href="http://www.midi.org/techspecs/xmf/xmf.php">MIDI.org</a>, although the successor versions were available there.</fdd:documentation>

    61. 

  61. 		<fdd:adoption>The <a href="http://www.midi.org/techspecs/xmf/xmf_faq.php">MIDI Manufacturers Association FAQ</a> states, "Many mobile phones can already open and play Mobile XMF files."  The compilers of this document have not confirmed the accuracy of this statement.  <a href="../contact_format.shtml">Comments welcome</a>.</fdd:adoption>

    62. 

  62. 		<fdd:licensingAndPatents>The <a href="http://www.midi.org/techspecs/xmf/xmf_faq.php">MIDI Manufacturers Association FAQ</a> states, "XMF is freely usable. The only thing you have to pay for is buying the specification documents."

    63. 

  63. </fdd:licensingAndPatents>

    64. 

  64. 		<fdd:transparency>Transparent wrapper. See also <fddLink id="fdd000102">MIDI_SD</fddLink> and <fddLink id="fdd000118">DLS_1_1b</fddLink>.</fdd:transparency>

    65. 

  65. 		<fdd:selfDocumentation>Provided by <i>MetaDataItems</i>, which may be placed at any node in the file and may include technical, copyright, or descriptive information, e.g., title, name, author, etc. The specification speaks of a future plan to specify an XML semantic equivalent to the current mechanism.</fdd:selfDocumentation>

    66. 

  66. 		<fdd:externalDependencies>See <fddLink id="fdd000102">MIDI_SD</fddLink> and <fddLink id="fdd000118">DLS_1_1b</fddLink>.

    67. 

  67. 		</fdd:externalDependencies>

    68. 

  68. 		<fdd:techProtection>None known to the compilers of this document.</fdd:techProtection>

    69. 

  69. 	</fdd:sustainabilityFactors>

    70. 

  70. 	<fdd:qualityAndFunctionalityFactors>

    71. 

  71. 		<fdd:soundQF>

    72. 

  72. 			<fdd:normalSound>Not applicable; see <fddLink id="fdd000102">MIDI_SD</fddLink> and <fddLink id="fdd000118">DLS_1_1b</fddLink>.</fdd:normalSound>

    73. 

  73. 			<fdd:fidelity>Not applicable; see <fddLink id="fdd000102">MIDI_SD</fddLink> and <fddLink id="fdd000118">DLS_1_1b</fddLink>.</fdd:fidelity>

    74. 

  74. 			<fdd:channels>Not applicable; see <fddLink id="fdd000102">MIDI_SD</fddLink>.</fdd:channels>

    75. 

  75. 			<fdd:samples>Yes, when an XMF instance contains or references <fddLink id="fdd000118">DLS_1_1b</fddLink>.</fdd:samples>

    76. 

  76. 			<fdd:beyondSound>The XMF specification (RP-032) discusses Meta-Events pertaining to assignment of data to instruments in an XMF context. See also <fddLink id="fdd000102">MIDI_SD</fddLink>; the compilers of this document have not investigated the degree to which such added functionality is provided by XMF as distinct from other file formats and/or application software.</fdd:beyondSound>

    77. 

  77. 		</fdd:soundQF>

    78. 

  78. 	</fdd:qualityAndFunctionalityFactors>

    79. 

  79. 	<fdd:fileTypeSignifiers>

    80. 

  80. 		<fdd:signifiersGroup>

    81. 

  81. 			<fdd:filenameExtension>

    82. 

  82. 				<fdd:sigValues>

    83. 

  83. 					<fdd:sigValue>xmf</fdd:sigValue>

    84. 

  84. 				</fdd:sigValues>

    85. 

  85. 				<fdd:note>Suggested by the specification.</fdd:note>

    86. 

  86. 			</fdd:filenameExtension>

    87. 

  87. 			<fdd:filenameExtension>

    88. 

  88. 				<fdd:sigValues>

    89. 

  89. 					<fdd:sigValue>mxmf </fdd:sigValue>

    90. 

  90. 				</fdd:sigValues>

    91. 

  91. 				<fdd:note>For Mobile-XMF, from <a href="http://www.iana.org/assignments/media-types/audio/vnd.nokia.mobile-xmf">http://www.iana.org/assignments/media-types/audio/vnd.nokia.mobile-xmf</a>.</fdd:note>

    92. 

  92. 			</fdd:filenameExtension>

    93. 

  93. 			<fdd:internetMediaType>

    94. 

  94. 				<fdd:sigValues>

    95. 

  95. 					<fdd:sigValue>audio/mobile-xmf</fdd:sigValue>

    96. 

  96. 				</fdd:sigValues>

    97. 

  97. 				<fdd:note>From <a href="http://filext.com/">The File Extension Source</a>, for Mobile-XMF.  See also <a href="http://www.iana.org/assignments/media-types/audio/vnd.nokia.mobile-xmf">http://www.iana.org/assignments/media-types/audio/vnd.nokia.mobile-xmf</a>: <i>audio/vnd.nokia.mobile-xmf</i>

    98. 

  98. 				</fdd:note>

    99. 

  99. 			</fdd:internetMediaType>

    100. 

  100. 			<fdd:magicNumbers>

    101. 

  101. 				<fdd:sigValues>

    102. 

  102. 					<fdd:sigValue>Hex: 58 4D 46 5F</fdd:sigValue>

    103. 

  103. 					<fdd:sigValue>ASCII: XMF_</fdd:sigValue>

    104. 

  104. 				</fdd:sigValues>

    105. 

  105. 				<fdd:note>From <a href="http://filext.com/">The File Extension Source</a>, for Mobile-XMF. </fdd:note>

    106. 

  106. 			</fdd:magicNumbers>

    107. 

  107. 		</fdd:signifiersGroup>

    108. 

  108. 	</fdd:fileTypeSignifiers>

    109. 

  109. 	<fdd:notes>

    110. 

  110. 		<fdd:general>

    111. 

  111. 			<p>In February 2011, the <a href="http://www.midi.org/techspecs/xmf/xmf.php">MIDI Manufacturers Association Web site XMF page</a> outlined the current set of XMF specifications: </p>

    112. 

  112. 			<ul>

    113. 

  113. 				<li>XMF Meta File Format (RP-030) [specification not offered]</li>

    114. 

  114. 				<li>XMF Meta File Format 1.01 (RP-039)</li>

    115. 

  115. 				<li>XMF Meta File Format 2.00 (RP-043)</li>

    116. 

  116. 				<li>XMF Type 0 and Type 1 Files (RP-031)</li>

    117. 

  117. 				<li>XMF Type 2 Files (Mobile XMF Files; RP-042)</li>

    118. 

  118. 				<li>XMF Type 3 Files (Audio Clips for Mobile XMF Files; RP-045)</li>

    119. 

  119. 				<li>XMF Type 4 Files (Interactive XMF or iXMF Files, no RP number provided)</li>

    120. 

  120. 			</ul>

    121. 

  121. 			<p>

    122. 

  122. 				<a href="http://en.wikipedia.org/wiki/MIDI">Wikipedia MIDI article</a> (consulted February 25, 2011): "The MMA [MIDI Manufacturers Association] has also defined (and AMEI [Association of Musical Electronics Industry, a Japan-based trade group] has approved) a new family of file formats, XMF (Extensible Music File), some of which package SMF chunks with instrument data in DLS format (Downloadable Sounds, also an MMA/AMEI specification), to much the same effect as the MOD file format. The XMF container is a binary format (not XML-based, although the file extensions are similar)."</p>

    123. 

  123. 			<p>From <a href="http://www.iana.org/assignments/media-types/audio/vnd.nokia.mobile-xmf">http://www.iana.org/assignments/media-types/audio/vnd.nokia.mobile-xmf</a> (2004): "Mobile XMF is a Musical Instrument Digital Interface (MIDI) specification developed by MMA and AMEI."</p>

    124. 

  124. 		</fdd:general>

    125. 

  125. 		<fdd:history>The development of XMF post-dates that of <fddLink id="fdd000120">RMID</fddLink>, the use of which is <a href="http://www.midi.org/techspecs/index.php">deprecated</a> at the MIDI.org web site.</fdd:history>

    126. 

  126. 	</fdd:notes>

    127. 

  127. 	<fdd:formatSpecifications>

    128. 

  128. 		<fdd:citations>

    129. 

  129. 			<fdd:citation>

    130. 

  130. 				<fdd:specReference>

    131. 

  131. 					<i>XMF Specification</i> (2001); as of February 2011, no longer available from MIDI.org (former URL: http://www.midi.org/about-midi/specshome.shtml).  Note that successor versions are available from the <a href="http://www.midi.org/techspecs/xmf/xmf.php">MIDI.org XMF Web page</a> (http://www.midi.org/techspecs/xmf/xmf.php).</fdd:specReference>

    132. 

  132. 			</fdd:citation>

    133. 

  133. 		</fdd:citations>

    134. 

  134. 	</fdd:formatSpecifications>

    135. 

  135. 	<fdd:usefulReferences>

    136. 

  136. 		<fdd:urls>

    137. 

  137. 			<fdd:url>

    138. 

  138. 				<fdd:urlReference>

    139. 

  139. 					<link>http://www.midi.org/techspecs/xmf/xmf_faq.php</link>

    140. 

  140. 					<tag>XMF FAQ</tag>

    141. 

  141. 					<comment>From the MIDI Manufacturers Association.</comment>

    142. 

  142. 				</fdd:urlReference>

    143. 

  143. 			</fdd:url>

    144. 

  144. 			<fdd:url>

    145. 

  145. 				<fdd:urlReference>

    146. 

  146. 					<link>http://www.wordiq.com/definition/MIDI</link>

    147. 

  147. 					<tag>http://www.wordiq.com/definition/MIDI</tag>

    148. 

  148. 					<comment>Scroll down for a short description of XMF.</comment>

    149. 

  149. 				</fdd:urlReference>

    150. 

  150. 			</fdd:url>

    151. 

  151. 			<fdd:url>

    152. 

  152. 				<fdd:urlReference>

    153. 

  153. 					<link>http://www.iana.org/assignments/media-types/audio/vnd.nokia.mobile-xmf</link>

    154. 

  154. 					<tag>2003 vendor registration of MIME media type by Nokia</tag>

    155. 

  155. 					<comment>Includes description of Mobile XMF.</comment>

    156. 

  156. 				</fdd:urlReference>

    157. 

  157. 			</fdd:url>

    158. 

  158. 			<fdd:url>

    159. 

  159. 				<fdd:urlReference>

    160. 

  160. 					<link>http://www.ietf.org/rfc/rfc4723.txt</link>

    161. 

  161. 					<tag>Mobile XMF MIME</tag>

    162. 

  162. 					<comment>2006 registration of audio/mobile-xmf as MIME media type with IANA.  Technically this refers to version 2.0 of XMF.</comment>

    163. 

  163. 				</fdd:urlReference>

    164. 

  164. 			</fdd:url>

    165. 

  165. 			<fdd:url>

    166. 

  166. 				<fdd:urlReference>

    167. 

  167. 					<link>http://en.wikipedia.org/wiki/MIDI</link>

    168. 

  168. 					<tag>Wikipedia MIDI article</tag>

    169. 

  169. 					<comment>Includes section on XMF.</comment>

    170. 

  170. 				</fdd:urlReference>

    171. 

  171. 			</fdd:url>

    172. 

  172. 			<fdd:url>

    173. 

  173. 				<fdd:urlReference>

    174. 

  174. 					<link>http://filext.com/</link>

    175. 

  175. 					<tag>The File Extension Source</tag>

    176. 

  176. 				</fdd:urlReference>

    177. 

  177. 			</fdd:url>

    178. 

  178. 		</fdd:urls>

    179. 

  179. 	</fdd:usefulReferences>

    180. 

  180. </fdd:FDD>

    181. 

  181.