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Misc/NEWS.d/next/Library/2026-03-23-20-14-57.gh-issue-146341.JSTJlL.rst

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+Add the following MIME types corresponding to file extensions:
+
+-        '.3gp'    : 'video/3gpp',
+-        '.3g2'    : 'video/3gpp2',
+ -       '.m4s'    : 'video/iso.segment',
+ -       '.lot'    : 'video/lottie+json',
+ -      '.mj2'    : 'video/mj2',
+ -       '.pyv'    : 'video/vnd.ms-playready.media.pyv',
+ -       '.blk'    and '.bk2': 'video/vnd.radgamettools.bink',
+ -      '.sswf' and       '.ssw'  : 'video/vnd.sealed.swf',
+ -       '.yt'     : 'video/vnd.youtube.yt'.