The Media Working Group has published First Public Working Drafts of three specifications that enhance media user experiences on the Web:

• Media Capabilities defines APIs to allow websites to make an optimal decision for decoding, encoding, and rendering when picking media content for the user.
• Picture-in-Picture allows websites to create a floating video window always on top of other windows so that users may continue consuming media while they interact with other content sites or applications on their device.
• The Media Session Standard enables web developers to show customized media metadata on platform UI, customize available platform media controls, and access platform media keys such as hardware keys found on keyboards, headsets, remote controls, and software keys found in notification areas and on lock screens of mobile devices.

The Web of Things Working Group has published two Proposed Recommendations:

• Web of Things (WoT) Architecture
• Web of Things (WoT) Thing Description

WoT Architecture describes a formal model and a common representation for a WoT Thing Description. A Thing Description describes the metadata and interfaces of Things, where a Thing is an abstraction of a physical or virtual entity that provides interactions to and participates in the Web of Things. Thing Descriptions provide a set of interactions based on a small vocabulary that makes it possible both to integrate diverse devices and to allow diverse applications to interoperate.

Comments are welcome through 27 February 2020.

The Timed Text (TT) Working Group invites implementation of its updated Candidate Recommendation of Timed Text Markup Language 2 (TTML2) (2nd Edition). This document specifies the Second Edition of the Timed Text Markup Language (TTML), Version 2, also known as TTML2 (2e), in terms of a vocabulary and semantics thereof. The Timed Text Markup Language is a content type that represents timed text media for the purpose of interchange among authoring systems. Timed text is textual information that is intrinsically or extrinsically associated with timing information. It is intended to be used for the purpose of transcoding or exchanging timed text information among legacy distribution content formats presently in use for subtitling and captioning functions.

Comments are welcome by 25 February 2020.