The HTML Media Extensions Working Group works in public. Our mailing list, public-html-media, is opened to the public.

A detailed list of this group's publications and their status is available.

The Group is currently chartered to make corrections that do not add new features to its Recommendation(s) through 30 April 2018.

Note: As of May 2017, the HTML Media Extensions remains to make corrections that do not add new features to its Recommendation(s) accomplished within the scope of the charter. Future work on HTML is now happening in the Web Platform Working Group and the Group was renamed accordingly in November 2015.

Membership and Participation

The HTML Media Extensions Working Group encourages active participation from a diverse community, including content authors and content providers, web developers, implementors (of browsers, authoring tools, conformance checkers, etc.) and anyone interested in helping to evolve the HTML Media extensions. A full list of participants is available.

By charter, the group operates primarily by email (see public-html-media archive), supplemented by web-based surveys, occasional teleconferences and up to two in-person meetings per year.

How to join the group

This group operates under the W3C Patent Policy, which ensures that specifications published by the group can be implemented on a royalty-free (RF) basis. To record agreement from all participants with that W3C Patent Policy, joining the group involves completing several steps:

When you join, you will be subscribed to public-html-media, the publicly archived mailing-list for the group. Consistent failure to follow the Discussion Guidelines will result in removal from the working group.

Communication: Mailing lists and IRC

The primary mailing list for HTML Media Extensions Working Group communication is public-html-media.

The group uses the #html-media channel on for its weekly telcons and for informal discussion.

Patent Disclosures

W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent.