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Status update: TV/video-related activity at W3C, May 2015

From: Daniel Davis <ddavis@w3.org>
Date: Thu, 30 Jul 2015 18:00:26 +0900
Message-ID: <55B9E7AA.1000106@w3.org>
To: "public-web-and-tv@w3.org" <public-web-and-tv@w3.org>
Hi all,

Ahead of vacation time for many people, here is an update of some recent
activity and upcoming calls/meetings.

== GGIE (Glass-to-Glass Internet Ecosystem) ==

The group's recent activity is a continuing discussion of new end-to-end
digital video use cases include dynamic ad insertion and mapping of well
defined URI names to deliver Caches.

Call to action: GGIE is soon going to begin deep diving into select use
cases with the intention of fleshing out in detail the end-end use
cases, and to identify gaps in current standards that are preventing the
use case from being available for implementation.  We are also looking
at what the group will focus on in 2016, including areas such as deeper
work on identity and privacy for digital content creators and viewers.
See the current use cases linked from the GGIE website:
https://www.w3.org/2011/webtv/wiki/GGIE_TF

The next call to discuss these will be on Wednesday 19th August at
11:00am EST (see http://timeanddate.com/s/2v2f ).

== Multi-Device Timing Community Group ==

Recent activities of the Multi-device Timing CG [1] have focused on
filling gaps in the draft spec of the TimingObject [2]. The overall goal
is to make the spec ready for standardisation by September/October,
hopefully so that it may be ready for inclusion in the proposed Timed
Media Working Group [3] from the start.

Recent discussions and draft edits have been concerned with
1. how the TimingObject connects to online timing sources, providing a
fundament for precisely timed operation in a broad range of multi-device
Web applications.
2. how to connect HTMLMediaElements to the TimingObject, thereby
enabling precisely timed, multi-device video/audio presentations,
collaborative viewing, video synchronisation, dynamic switching between
video sources/ad-insertion etc.
3. how to connect sequencer logic (TimedTextTracks) to the TimingObject,
thereby enabling precisely timed, multi-device visualisation of timed
data (subtitles, transcripts, comments, data-series, etc).

The TimingObject spec draft has recently been updated to cover these
objectives, and we invite feedback from interested parties (Web TV IG
members in particular) during August/September (see [4]). The MTCG will
also be focussing on outreach, as multi-device timing likely is relevant
for several groups involved with media related activities (capturing,
transcripts, captioning, track support, animation, multi screen, remote
control, audio, interactivity, animation, etc).

Timing concepts have also been implemented independently by Motion
Corporation [5], and by Francois Daoust (W3C) [6]. During August we
expect further contributions for B). (MediaSync) and C). (Sequencer)
from the EU project MediaScape [7], as well as a report on current
status of HTMLMediaElements and their ability to support timed presentation.

[1] https://www.w3.org/community/webtiming/
[2] http://webtiming.github.io/timingobject/
[3] http://w3c.github.io/charter-html/timed-media-wg.html
[4] https://lists.w3.org/Archives/Public/public-webtiming/2015Jul/0019.html.
[5] http://motioncorporation.com
[6] https://github.com/webtiming/timingobject
[7] http://mediascapeproject.eu

== TV Control API ==

The current focus is on completing the technical specification of the TV
Control API which is on track for completion of the Editor's Draft by
the end of 2015. Here's the current draft:
http://w3c.github.io/tvapi/spec/

Most recently discussion and spec edits have focused on recording and
time-shifting. Work is being tracked in a progress table showing areas
that are supported and unsupported in the current spec:
https://www.w3.org/community/tvapi/wiki/Main_Page/Progress_Measurement

The next monthly conference call will be on Tuesday 4th August at 9:00am
ET (see http://timeanddate.com/s/2v2e ). New participants are very
welcome to join in. Call-in details are here:
https://www.w3.org/community/tvapi/wiki/Main_Page#Resources

== HTML Media Task Force -> Timed Media Working Group ==

The big news is the evolution of the Media Task Force into a proposed
new working group for Timed Media, namely video and audio. This is part
of a move towards modularization of HTML and its APIs. A blog post was
published this week about this proposal:
http://www.w3.org/blog/2015/07/moving-the-web-platform-forward/

The Timed Media Working Group itself is now going through charter review
with possible additional deliverables covering transcripts, captioning
support, inband track support, media capture and synchronization. On
this last topic there is the potential to adopt the work done by the
Multi-Device Timing Community Group (see above). See the full proposed
charter here:
https://w3c.github.io/charter-html/timed-media-wg.html

== Second Screen Working Group ==

The minutes of the group's face-to-face meeting from May in Berlin are
available online:
http://www.w3.org/2015/05/19-webscreens-minutes.html

The spec continues to mature and recent edits include the specification
of a PresentationRequest object and defaultRequest attribute. The latest
changes are listed here:
https://github.com/w3c/presentation-api/commits/gh-pages

Like the Web and TV Interest Group, the Second Screen Working Group will
have its next face-to-face meeting at TPAC 2015 in Sapporo, Japan:
http://www.w3.org/2015/10/TPAC/


That's a lot to digest so of course feel free to send a mail to this
list if you have questions or would like to discuss something further.

With regards,
Daniel Davis
W3C
Received on Thursday, 30 July 2015 09:01:03 UTC

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