Standards
Standards

Understand the various specifications, their maturity levels on the web standards track, and their adoption.
Explore web standards
Groups
Groups

A variety of groups develop Web Standards, guidelines, or supporting materials.
About W3C groups
Get involved
Get involved

W3C works at the nexus of core technology, industry needs, and societal needs.
Find ways to get involved
Resources
Resources

Master Web fundamentals, use our developer tools, or contribute code.
Learn from W3C resources
News & events
News & events

Recent content across news, blogs, press releases, media; upcoming events.
Follow news & events
About
About

Understand our values and principles, learn our history, look into our policies, meet our people.
Find out more about us
Search
My account

First Public Working Draft: Media Source Extensions™

Author(s) and publish date

Published:: 30 September 2021

The Media Working Group has published a First Public Working Draft of Media Source Extensions™. This specification extends HTMLMediaElement [HTML] to allow JavaScript to generate media streams for playback. Allowing JavaScript to generate streams facilitates a variety of use cases like adaptive streaming and time shifting live streams.

Related RSS feed

Subscribe to our news feed