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    Format

    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:

    http://www.iana.org/assignments/media-types/index.html

    These are the Types in the standard:

    application

    audio

    example

    image

    message

    model

    multipart

    text

    video


    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).


    DAI object Format
    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

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