mimetypes cannot detect mime of mka files

[manujchandra]

BPO	45253
Nosy	@Fidget-Spinner, @akulakov
Files	Screenshot from 2021-09-21 13-10-33.png

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-09-21.07:49:08.538>
labels = ['type-bug', 'library', '3.9']
title = 'mimetypes cannot detect mime of mka files'
updated_at = <Date 2021-10-11.18:23:24.571>
user = 'https://bugs.python.org/manujchandra'

bugs.python.org fields:

activity = <Date 2021-10-11.18:23:24.571>
actor = 'andrei.avk'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-09-21.07:49:08.538>
creator = 'manujchandra'
dependencies = []
files = ['50292']
hgrepos = []
issue_num = 45253
keywords = []
message_count = 2.0
messages = ['402290', '403666']
nosy_count = 3.0
nosy_names = ['kj', 'andrei.avk', 'manujchandra']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'pending'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue45253'
versions = ['Python 3.9']

Linked PRs

• gh-89416: Add RFC 9559 MIME types for Matroska formats #126412

[manujchandra]

The mimetypes library cannot detect mime of mka files. It returns None instead of audio.

mp3 and mkv are working. Only mka is not working.

[akulakov]

mkv (matroska) is not registered with IANA here: http://www.iana.org/assignments/media-types/media-types.xhtml

Therefore according to the comment in mimetypes.py, it should not be added.

Also note that .mkv is also not in mimetypes.py, so it's being loaded from your system's mime types, so if you want .mka to work as well, make sure it's registered on your system rather than in Python's mimetypes.py .

I will close this as not a bug, please comment here if you think it should stay open.

[hugovk]

https://www.iana.org/assignments/media-types/media-types.xhtml now lists:

matroska	audio/matroska	[RFC9559]

Where RFC 9559 was published in October 2024.

Please see PR #126412.

(cc @manujchandra)