AW: webtv-ACTION-261: draft a proposal for the IG to confirm a desire for HTML and CSS to support TTML playback

Nigel, all,

 

Thanks for drafting!

 

> 1. The Media and Entertainment Interest Group recognises that playback of
TTML subtitles and captions needs to be supported by the web platform as a
whole.

 

The Media and Entertainment Interest Group recognises that although playback
of TTML subtitles and captions (especially in the IMSC profile) is already
common practice on the web, better integration in HTML 5 and support by the
web platform as a whole are needed.

 

Topic 3 and 4 should be left out for the moment as they are already answers
for questions we still investigate.

 

Best regards,

 

Andreas

 

-----Ursprüngliche Nachricht-----
Von: Nigel Megitt [mailto:nigel.megitt@bbc.co.uk] 
Gesendet: Mittwoch, 8. November 2017 18:55
An: Media and Entertainment Interest Group <public-web-and-tv@w3.org>
Betreff: RE: webtv-ACTION-261: draft a proposal for the IG to confirm a
desire for HTML and CSS to support TTML playback

 

All,

 

my proposed resolutions following Monday's meeting (designed to follow on
from each other, i.e. we could accept all of them as resolutions):

 

1. The Media and Entertainment Interest Group recognises that playback of
TTML subtitles and captions needs to be supported by the web platform as a
whole.

 

2. The playback of TTML subtitles and captions on the web platform requires
a CSS mapping for all the presentation features for which support is needed
in the IMSC profiles of TTML, i.e. that for any given style attribute value
permitted in IMSC there is an equivalent set of CSS property values that can
be applied to equivalent HTML elements to achieve the same semantics.

 

3. The playback of TTML subtitles and captions on the web platform is best
supported by allowing Text Track Cues to be created that support the generic
presentation semantics of HTML and CSS.

 

4. The playback of TTML subtitles and captions on the web platform should
include the ability to create appropriate Text Track Cues from data provided
via Media Source Extensions.

 

Reading that back, it looks a bit like a manifesto. Anyway, comments or
editing suggestions welcome, or indeed indications of support for making
these proposals into resolutions.

 

kind regards,

 

Nigel

 

________________________________________

From: Media and Entertainment Interest Group Issue Tracker
[sysbot+tracker@w3.org]

Sent: 09 November 2017 02:37

To:  <mailto:public-web-and-tv@w3.org> public-web-and-tv@w3.org

Subject: webtv-ACTION-261: draft a proposal for the IG to confirm a desire
for HTML and CSS to support TTML playback

 

webtv-ACTION-261: draft a proposal for the IG to confirm a desire for HTML
and CSS to support TTML playback

 

 <http://www.w3.org/2011/webtv/track/actions/261>
http://www.w3.org/2011/webtv/track/actions/261

 

Assigned to: Nigel Megitt

 

 

On product: tt

 

draft a proposal for the IG to confirm a desire for HTML and CSS to support
TTML playback

 

 

 

 

 

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