[media-types] Re: [IANA #1449419] application/ vnd.softpres-ipf-disk-image registration request

Hi Amanda,

Similar to the other 2 registration requests: other than the unclear 
relationship between the registrant and the company that produced the 
original software, this is fine to register.

In particular I want to hear from others whether it is Ok for Thomas 
Huth to be listed as the Change Controller for this registration.

Thank you,

Alexey

On 07/04/2026 00:11, Amanda Baber via RT wrote:
> Hi,
>
> #3 of 3 from this applicant.
>
> thanks,
> Amanda
>
> =====
>
> Name: Thomas Huth
>
> Email: [email protected]
>
> Media type name: application
>
> Media subtype name: vnd.softpres-ipf-disk-image
>
> Required parameters: N/A
>
> Optional parameters: N/A
>
> Encoding considerations: binary
>
> Security considerations: IPF (Interchangeable Preservation Format) disk images can store the same data as real floppy disks. That means they may contain arbitrary content, including but not limited to active content. Thus if the users do not trust the contents of the disk image, they should carefully check the contents first before using it (e.g. with a suitable anti-virus software to check for known malicious software). The IPF format also does not provide privacy or full integrity protection, so if these protections are desired they must be applied externally.
>
> Interoperability considerations: There has never been an official documentation of the IPF disk image file format, so this could lead to incompatibilities. But there is a support library available (http://www.kryoflux.com/download/spsdeclib_5.1_source.zip) and the layout has been analysed and documented by a third party, so that applications that follow these sources should be interoperable.
>
> Published specification: Third party specification: https://www.kryoflux.com/download/ipf_documentation_v1.6.pdf
>
> Applications which use this media: The IPF file format is used by floppy disk preservation tools and various emulators of old computers that used such floppy disks.
>
> Fragment identifier considerations: N/A
>
> Restrictions on usage: N/A
>
> Provisional registration? (standards tree only): No
>
> Additional information:
>
> 1. Deprecated alias names for this type: N/A
> 2. Magic number(s): 0x43 0x41 0x50 0x53 at file offset 0 (i.e. the ASCII letters "CAPS")
> 3. File extension(s): .ipf
> 4. Macintosh file type code: N/A
> 5. Object Identifiers: N/A
>
> General Comments:
>
> Person to contact for further information:
>
> 1. Name: Thomas Huth
> 2. Email: [email protected]
>
> Intended usage: COMMON
>
> IPF files are usually created by disk preservation tools like the software for the "KryoFlux" floppy controller card. The IPF files contain the low-level flux data of the disk and thus can be used to fully preserve the contents of a floppy disk. These files then can be used in emulators for providing the floppy disk contents to the emulated system.
>
> Author/Change controller: Thomas Huth
>
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