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gh-146341: Add new video MIME types to mimetypes.py #146342

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Add new video MIME types to mimetypes.py
clin1234 Mar 23, 2026
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📜🤖 Added by blurb_it.
blurb-it[bot] Mar 23, 2026
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clin1234 Mar 23, 2026
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Formatting
clin1234 Mar 24, 2026
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Omit comma
clin1234 Mar 24, 2026
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Again...
clin1234 Mar 24, 2026
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Add name and GH issue in News fragment
clin1234 Apr 1, 2026
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Add new video MIME types and update contributions
clin1234 Apr 1, 2026
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Fix syntax errors in mimetypes.py
clin1234 Apr 2, 2026
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13 changes: 11 additions & 2 deletions Doc/whatsnew/3.15.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -867,8 +867,17 @@ mimetypes
- ``application/vnd.ms-cab-compressed`` for ``.cab`` extension
- ``application/vnd.ms-htmlhelp`` for ``.chm`` extension
- ``application/vnd.ms-officetheme`` for ``.thmx`` extension

(Contributed by Charlie Lin in :gh:`145718`.)
- ``.3gp`` for ``video/3gpp``
- ``.3g2`` for ``video/3gpp2``
- ``.m4s`` for ``video/iso.segment``
- ``.lot`` for ``video/lottie+json``
- ``.mj2`` for ``video/mj2``
- ``.pyv`` for ``video/vnd.ms-playready.media.pyv``
- ``.blk`` and ``.bk2`` for ``video/vnd.radgamettools.bink``
- ``.sswf`` and ``.ssw`` for ``video/vnd.sealed.swf``
- ``.yt`` for ``video/vnd.youtube.yt``

(Contributed by Charlie Lin in :gh:`145718` and :gh:`146342`.)

* Add ``image/jxl``. (Contributed by Foolbar in :gh:`144213`.)
* Rename ``application/x-texinfo`` to ``application/texinfo``.
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11 changes: 11 additions & 0 deletions Lib/mimetypes.py
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Expand Up @@ -668,8 +668,13 @@ def _default_mime_types():
'.sgml' : 'text/x-sgml',
'.vcf' : 'text/x-vcard',
'.xml' : 'text/xml',
'.3gp' : 'video/3gpp',
'.3g2' : 'video/3gpp2',
'.m4s' : 'video/iso.segment',
'.lot' : 'video/lottie+json',
'.mkv' : 'video/matroska',
'.mk3d' : 'video/matroska-3d',
'.mj2' : 'video/mj2',
'.mp4' : 'video/mp4',
'.mpeg' : 'video/mpeg',
'.m1v' : 'video/mpeg',
Expand All @@ -679,6 +684,12 @@ def _default_mime_types():
'.ogv' : 'video/ogg',
'.mov' : 'video/quicktime',
'.qt' : 'video/quicktime',
'.pyv' : 'video/vnd.ms-playready.media.pyv',
'.blk' : 'video/vnd.radgamettools.bink',
'.bk2' : 'video/vnd.radgamettools.bink',
'.sswf' : 'video/vnd.sealed.swf',
'.ssw' : 'video/vnd.sealed.swf',
'.yt' : 'video/vnd.youtube.yt',
'.webm' : 'video/webm',
'.avi' : 'video/vnd.avi',
'.m4v' : 'video/x-m4v',
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13 changes: 13 additions & 0 deletions Misc/NEWS.d/next/Library/2026-03-23-20-14-57.gh-issue-146341.JSTJlL.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
Add the following MIME types corresponding to file extensions:

- ``.3gp`` for ``video/3gpp``
- ``.3g2`` for ``video/3gpp2``
- ``.m4s`` for ``video/iso.segment``
- ``.lot`` for ``video/lottie+json``
- ``.mj2`` for ``video/mj2``
- ``.pyv`` for ``video/vnd.ms-playready.media.pyv``
- ``.blk`` and ``.bk2`` for ``video/vnd.radgamettools.bink``
- ``.sswf`` and ``.ssw`` for ``video/vnd.sealed.swf``
- ``.yt`` for ``video/vnd.youtube.yt``
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@benediktjohannes benediktjohannes Apr 1, 2026

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Same as in other PR, maybe add your name here and please add 3.15 release notes and maybe combine the PRs


(Contributed by Charlie Lin in :gh:`146342`.)
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