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mime-subtype Mime Subtype

Mime subtype for a graphic, multimedia object, or piece of supplementary material.

Usage/Remarks

The source for this attribute’s values is the Internet Assigned Numbers Authority (IANA).
Although this Tag Set cannot enforce it, the element <graphic> should be limited to still images. The element <media> should be reserved for objects whose @mime-subtype involves video, audio, moving images, time-dependent graphical types, and other non-XML data types. Mimetypes and subtypes should be set accordingly but are not constrained by this Tag Set.
OPTIONAL on many elements; click for list and usage

<graphic>, <inline-graphic>, <inline-media>, <inline-supplementary-material>, <media>, <supplementary-material>

Value Meaning
Text, numbers, or special characters A specific mime subtype (IANA).
Restriction @mime-subtype is an optional attribute; there is no default.
Tagged Samples
Mime subtypes (such as MPEG) for multimedia objects 
... 
<alternatives>
 <media mime-subtype="mpeg" mimetype="video" orientation="portrait"
   position="anchor" specific-use="archival-format" xlink:href="v1"></media>
 <media mime-subtype="x-flv" mimetype="video" orientation="portrait"
   position="anchor" specific-use="online-format" xlink:href="v1"></media>
</alternatives>
...
Mime subtype for Comma Separated Values (CSV) 
...
<supplementary-material id="source-data-1" content-type="sdata" 
  mimetype="text" mime-subtype="csv" xlink:href="source-data-1.csv">
 <label>Supplementary File 1</label>
 <caption>
  <title>Orthogroup clustering analysis</title>
 </caption>
</supplementary-material>
...