https://mailarchive.ietf.org/arch/msg/ietf-announce-old/VsDBw4_Cgsxoq5GTWDLuY1OgQCk/
Document Action: The 'text/html' Media Type to Informational
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html mediadocumentactiontexttype
https://caniuse.com/?search=ciu/html-media-capture
"ciu/html-media-capture" | Can I use... Support tables for HTML5, CSS3, etc
html media capturesupport tableshtml5 css3useetc
https://www.w3.org/groups/wg/html/
HTML Media Extensions | Working Groups | Discover W3C groups | W3C
The mission of the HTML Working Group is to continue the evolution of HTML (including classic HTML and XML syntaxes).
html mediaworking groupsextensionsdiscoverw3c
https://www.w3.org/TR/2018/REC-html-media-capture-20180201/
HTML Media Capture
html media capture
https://techhtml.github.io/html-media-capture/
HTML Media Capture
html media capture