TV-related groups

HTML Media Extensions Working Group

Relevant documents:
- Network Service Discovery (NSD) API (stalled)
  - Discussions with Web Apps Security WG to address security and privacy concerns. CORS checks subsequently added to specification.

Created in April 2016 following 2 years of incubation within the TV Control API Community Group
Initial work based on requirements from the Web and TV Interest Group.
The goal of the WG is to enable a web app to get EPG information, control and switch TV/radio channels, interact with the TV platform, etc.
Relevant document:
- TV Control API

The goal of the Second Screen Working Group specifies is to allow web applications to use secondary screens to display Web content and Web media when connected, e.g. through video ports or HDMI, or wirelessly through Miracast, WiDi, or AirPlay;
The Second Screen Community Group discusses protocols for the specifications of the Working Group (as well as possible extensions to these specifications) to improve interoperability between first and second screens
Relevant documents:
- Presentation API
- Remote Playback API

Created in October 2013 to develop a specification defining how user agents should expose in-band tracks as HTML5 media element video, audio and text tracks so that Web applications can access the in-band track information;
Led by CableLabs with discussion involving TP Vision, Telecom ParisTech, Opera, Sony and others;
Relevant documents:
- Background work relating to MPEG-2, MP4 and DASH.

Created in February 2015 to look into timing and synchronization between devices and to define a common, multi-device, timing mechanism and a practical programming model. This will improve the Web as a platform for time-sensitive, multi-device Web applications;
Led by Motion Corporation;
Relevant documents:
- Group charter
- Timing Object specification

Re-chartered in 2013 to include WebVTT and TTML 1.1 specifications, and TTML Text and Image Profiles for Internet Media Subtitles and Captions as deliverables.

Created in September 2016 to specify a minimum set of Web technologies that developers can rely on being supported across devices for media applications

Created in 2011 to work on text tracks for video on the Web, applied to captioning, subtitling and other purposes.
Relevant documents:
- WebVTT draft specification
- Source of WebVTT specification on GitHub

Created in 2012 to study and clarify the influence of Open Web Platform on the professional world of broadcasting.

Multimodal Interaction WG
- Multimodal/Multi-device integration for TV and CE devices

Protocols and Formats Working Group
- Review of accessibility support in Web and TV

Core Mobile Web Platform CG
- Adoption of the Mobile Web as a compelling platform for the development of modern mobile web applications

System Applications WG
- Runtime environment, security model, and associated APIs for building Web applications with comparable capabilities to native application

Web Performance WG
- Methods to enhance aspects of application performance of user agent features and APIs