Dublin Core : Format
The Format field in DAI metadata contains a value from an internationally recognized standard of Internet Media Types (MIME types). The format of the Format value is broken down into Types and Subtypes.
The standard is available here:
These are the Types in the standard:
The subtypes often represent the file extension of the file you're working with. The following are some examples of what MIME Type / Subtype combinations to use for digital objects on the DAI. Note that the DAI has chosen to stray from the IANA standard by indicating Audio/mp3 instead of Audio/mpeg (which is mandated by the standard) and Video/wmv (which doesn't appear in the standard since it is a proprietary Microsoft file).
|Book, where each page is a jpeg image||Image/jpeg|
|Book, where each page is a jpeg and the book is also available as PDF||Image/jpeg; Application/pdf|
|Photograph, map, poster or other instance where image is a jpeg||Image/jpeg|
|Video, where file is in MPEG4 format||Video/mp4|
|Video, where file is wmv||Video/wmv|
|Sound recording, where file is in mp3 format||Audio/mp3|