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).

Combine @mime-subtype into @mimetype

Avoid using @mime-subtype and @mimetype as separate attributes. Instead, combine mimetype and mime-subtype values separated by a slash inside @mimetype (e.g., mimetype="application/excel". IANA documentation refers to these combined mimetypes as “media-type”.
Prior to Release 1.4d1 of JATS, the mimetype and subtype attributes were used separately (mimetype="application" mime-subtype="excel"). For backwards compatibility, this usage will still be valid JATS, although precombined mimetypes are now preferred.
OPTIONAL on many elements; click for list and usage
Value Meaning
Text, numbers, or special characters A specific mime subtype (IANA).
Restriction @mime-subtype is an optional attribute; there is no default.
Tagged Sample

Mimetypes and subtypes for multimedia objects (Mpeg and Flash)

Shown with mimetype and subtype separately; current preferred form is precombined “video/mpeg” and “video/x-flv
... 
<alternatives>
 <media mimetype="video" mime-subtype="mpeg" orientation="portrait"
   position="anchor" specific-use="archival-format" xlink:href="v1"></media>
 <media mimetype="video" mime-subtype="x-flv" orientation="portrait"
   position="anchor" specific-use="online-format" xlink:href="v1"></media>
</alternatives>
...