I noticed some strange extensions and now I am pretty sure they were automatically parsed from rfc, but since it is not structured errors sometimes occur

image/heic: subtype, for

subtype;image/heic
for;image/heic

I think this 2 extensions we parsed automatically from rfc https://www.iana.org/assignments/media-types/image/heic

   File extension(s): heif (for subtype heif), heic (for subtype 
      heic), hif (for subtypes heif and heic)

.for can be an extension for "text/x-fortran" according to sources/from-apache

application/vnd.wfa.dpp: NA

Same for application/vnd.wfa.dpp

NA;application/vnd.wfa.dpp

https://www.iana.org/assignments/media-types/application/vnd.wfa.dpp

Additional information:

   1. Deprecated alias names for this type: NA
   2. Magic number(s): NA
   3. File extension(s): NA

image/avif: or

image/avif does not have extension "or"

75:image:I:E
...
avif;avif,heif,heifs,or,hif;

https://www.iana.org/assignments/media-types/image/avif

application/vnd.etsi.asic-e+zip: or

or;application/vnd.etsi.asic-e+zip

and in

vnd.etsi.asic-e+zip;asice,or,sce;
vnd.etsi.asic-s+zip;asics,or,scs;

https://www.iana.org/assignments/media-types/application/vnd.etsi.asic-e+zip

2. File extension(s) : asice or sce

vnd.exstream-package: or

vnd.exstream-package;pub,or,pkg;

https://www.iana.org/assignments/media-types/application/vnd.exstream-package

3. File extension(s): pub or pkg

audio/atrac-advanced-lossless: and

and;audio/atrac-advanced-lossless
...
atrac-advanced-lossless;aal,aa3,and,omg;
atrac-x;atx,aa3,and,omg;
atrac3;at3,aa3,and,omg;

https://www.iana.org/assignments/media-types/audio/ATRAC-ADVANCED-LOSSLESS

File extension(s):  'aal', 'aa3', and 'omg'

image/heif-sequence is better for .heifs

heifs;image/avif

As i got it avif is a subtype of heif - https://aomediacodec.github.io/av1-avif/

This document specifies syntax and semantics for the storage of [AV1] images in the generic image file format [HEIF], which is based on [ISOBMFF]. While [HEIF] defines general requirements, this document also specifies additional constraints to ensure higher interoperability between writers and readers when [HEIF] is used with [AV1] images.

So image/avif can have .heifs extension, but it is better to return image/heif-sequence type for .heifs

markov2 / perl5-MIME-Types

wrong extensions for image/heic and some others #9