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keeps / commons-ip

Commons IP is project that provide a command-line tool and Java Library to validate and manipulate E-ARK Information Packages, so to create or process E-ARK SIP and AIP and also validate them against official specifications.
http://keeps.github.io/commons-ip/
GNU Lesser General Public License v3.0
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What is the purpose of IANA Media Types list? #249

Closed ThomasEdvardsen closed 7 months ago

ThomasEdvardsen commented 7 months ago

We are trying to create an eArchive SIP with wav-files in it. These files are given the mimetype "application/octet-stream" in the METS file and not "audio/x-wav" as expected, due to not being on the IANA Media Types list.

What is the purpose of IANA Media Types list?

ThomasEdvardsen commented 7 months ago

I found that this is a requirement (CSIP68) in the CSIP Specification, but do not understand why.

luis100 commented 7 months ago

Hi @ThomasEdvardsen, the best forum for this question would be the CSIP spec github project, but I guess that if you are setting a MIME type, it should follow the controlled vocabullary standard, which in the case of MIME's would be the IANA Media Type list. I do understand this is not optimal as the standard list lacks many of the commonly used formats. But, anyway, the MIME types in the METS file are not widely used. In RODA, we do not use them at all, we always do automatic file format identification (using Siegfried and PRONOM database) and set the formats (MIME type and PRONOM id) in the PREMIS metadata, kept in the metadata/preservation folder for each representation.

ThomasEdvardsen commented 7 months ago

Thanks @luis100. I found an issue on this, so hopefully it would be changed. https://github.com/DILCISBoard/E-ARK-CSIP/issues/704

luis100 commented 6 months ago

@ThomasEdvardsen not sure if you are aware but in Commons-IP you can extend that base list: https://github.com/keeps/commons-ip?tab=readme-ov-file#extend-list-of-iana-media-types

ThomasEdvardsen commented 6 months ago

I found it after i created this issue ;)