Re: [w3ctag/design-reviews] TV-Specific Web Subsetting (#105)

The [CTA WAVE project](https://cta.tech/Research-Standards/Standards-Documents/WAVE-Project/WAVE-Project.aspx) is publishing a periodic Web Media API Snapshot to provide a spec and associated test suite to help consumer electronics manufacturers keep their smart TVs and other consumer products in synch with the web platform. [WAVE membership](https://cta.tech/Research-Standards/Standards-Documents/WAVE-Project/WAVE-Project.aspx) includes browser vendors, device manufacturers and media distributors.

The spec includes web APIs "[that are supported across all four of the most widely used user agent code bases at the time of publication" which "will then be used to generate a test suite](https://w3c.github.io/webmediaapi/#out-of-date-browsers)."

This spec is being developed in the [Web Media API Community Group](https://www.w3.org/community/webmediaapi/). The spec is being published under a [W3C-CTA co-publishing agreement](https://www.w3.org/Consortium/Legal/2017/W3C-CTA-MOU.pdf).

- Web Media API Snapshot 2017 was published last December [on the CG site](https://www.w3.org/2017/12/webmediaapi.html) and [by the CTA](https://cta.tech/cta/media/EventImages/TechStandards/CTA-5000-Final-v2_pdf.pdf). The [Web Media API Snapshot 2017 Test Suite](https://webapitests2017.ctawave.org) is also available.

- [Web Media API Snapshot 2018](https://w3c.github.io/webmediaapi/) is targeting a final review draft this Friday November 2, 2018.

Web Media API Snapshot 2018 includes a [recommendation that manufacturers follow the TAG Evergreen Web finding](https://w3c.github.io/webmediaapi/#client-code-updates):
>Devices SHOULD regularly update their browsers, preferably automatically.

CTA WAVE has liaisons with television specification groups already referencing HTML5 or planning to reference it, including:
- Advanced Television Systems Committee (ATSC)...
- Hybrid Broadcast Broadband TV (HbbTV)
- IPTV Forum Japan
- Korean Ministry of Science, ICT and Future Planning (MSIP)

Notes:
1. The "[specification is not defining a subset or profile to be used in place of the full Web platform. There are additional specifications that are included in all code bases that are not included in this specification... There is no suggestion that APIs not included in this specification should be removed from implementations.](https://w3c.github.io/webmediaapi/#out-of-date-browsers)"

2. I gave a [lightning talk on the WAVE test suite](https://www.w3.org/2018/10/TPAC/slides/WAVE-Vickers.pptx) at the recent [TPAC 2018 AC meeting](https://www.w3.org/2018/10/TPAC/ac-agenda.html).

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