# Missing mime type

**URL:** <https://community.crossref.org/t/missing-mime-type/2223>\
**Category:** Content Registration\
**Tags:** schema, xml\_support\
**Created:** [13 November 2021 16:25 UTC](https://community.crossref.org/t/missing-mime-type/2223 "2021-11-13T16:25:32Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![hbarkmann](https://avatars.discourse-cdn.com/v4/letter/h/3ec8ea/32.png) [@hbarkmann](https://community.crossref.org/u/hbarkmann)\
**Post date:** [13 November 2021 16:25 UTC](https://community.crossref.org/t/missing-mime-type/2223/1 "2021-11-13T16:25:32Z")

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I am missing audio/wav in mime types in common5.3.0 / 5.3.1  
We need to register components of that type.

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**Author:** ![ifarley](https://sea2.discourse-cdn.com/flex020/user_avatar/community.crossref.org/ifarley/32/44_2.png) [@ifarley](https://community.crossref.org/u/ifarley)\
**Post date:** [16 November 2021 03:01 UTC](https://community.crossref.org/t/missing-mime-type/2223/2 "2021-11-16T03:01:04Z")

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Hi @hbarkmann,

How about **audio/x-wav** instead?

 ![Screen Shot 2021-11-15 at 8.56.38 PM](https://us1.discourse-cdn.com/flex020/uploads/crossref/original/1X/0a4c92f9009a78bb6420b2af1449c8ac541b9990.jpeg)

[https://data.crossref.org/reports/help/schema\_doc/5.3.1/common5\_3\_1\_xsd.html#mime\_type.atts](https://data.crossref.org/reports/help/schema_doc/5.3.1/common5_3_1_xsd.html#mime_type.atts)

-Isaac

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**Author:** ![hbarkmann](https://avatars.discourse-cdn.com/v4/letter/h/3ec8ea/32.png) [@hbarkmann](https://community.crossref.org/u/hbarkmann)\
**Post date:** [16 November 2021 09:32 UTC](https://community.crossref.org/t/missing-mime-type/2223/3 "2021-11-16T09:32:03Z")

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I am creating the XML on a windows maschine using .NET technology.  
To set the mime type for the component “format” value I call a .NET function and receive audio/wav as mime type from the system. There is obviously some mix up going on with these two mime types, see:

> <https://stackoverflow.com/questions/44891157/why-wav-format-doesnt-have-same-mimetype-in-different-browsers>

It would be very helpful if audio/wav is in the list of accepted types along with audio/x-wav.  
Herbert

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**Author:** ![PFeeney](https://avatars.discourse-cdn.com/v4/letter/p/a9a28c/32.png) [@PFeeney](https://community.crossref.org/u/PFeeney)\
**Post date:** [18 November 2021 19:07 UTC](https://community.crossref.org/t/missing-mime-type/2223/4 "2021-11-18T19:07:45Z")

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Hi Herbert,  
Unfortunately we aren’t easily able to update our support for new mime types - it requires updating our input schema and migrating to a new schema version. I will try to get this change made in an upcoming update but it won’t happen any time soon.

We don’t get many requests for new mime/media types, but since we ask for this metadata, we should be able to support what you need to send us. I’ve created a user story to look at this issue overall in more detail: [As a Crossref member I want up to date mime/media types to be supported in Crossref metadata (#671) · Issues · crossref / User stories · GitLab](https://gitlab.com/crossref/user_stories/-/issues/671) but will also try to do a quick update to include audio/wav.

I’m sorry we don’t have a better solution for now, but we’ll try to get this updated.