The missing formats are missing because they were never defined in the 
OpenURL standard. There is a registry of formats [1] that was designed 
to be updatable, although few updates have been done. I worked on the 
document type standards that are there today, and would happily help 
develop additional types if we can get some assurance that they could be 
added to the standard. I honestly do not know what mechanism exists for 
adding new types, but if anyone is interested we could ping the 
appropriate folks at OCLC and see.

kc
[1] 
http://alcme.oclc.org/openurl/servlet/OAIHandler?verb=ListRecords&metadataPrefix=oai_dc&set=Core:Metadata+Formats

On 1/17/14, 8:36 AM, Chad Mills wrote:
> I was able to easily find and create COinS for books and journals.  I started thinking about images, video, audio, etc.  I see references to 'info:ofi/fmt:kev:mtx:unknown' as a rft_val_fmt value some places.  I would assume if I went down that road the rft.genre would have a value of 'unknown' as well.  Is there some other alternative I am missing when handling other formats?
>
> Thanks!
>
> --
> Chad Mills
> Digital Library Architect
> Ph: 848.932.5924
> Fax: 848.932.1386
> Cell: 732.309.8538
>
> Rutgers University Libraries
> Scholarly Communication Center
> Room 409D, Alexander Library
> 169 College Avenue, New Brunswick, NJ 08901
>
> http://rucore.libraries.rutgers.edu/

-- 
Karen Coyle
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m: 1-510-435-8234
skype: kcoylenet