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Re: HTML WG media discussion: Alternate content insertion use cases

From: Daniel Davis <ddavis@w3.org>
Date: Thu, 07 May 2015 20:40:28 +0900
Message-ID: <554B4F2C.6090902@w3.org>
To: Ingar Mæhlum Arntzen <ingar.arntzen@gmail.com>
CC: "public-web-and-tv@w3.org" <public-web-and-tv@w3.org>, public-webtiming@w3.org
Hi Ingar,

Thank you for bringing this to the attention of the Multi-device Timing
CG. I agree, timing could be something to consider for some of the use
cases so I'll point the HTML Media Task Force to your comments.

I like the demos that have been posted to the CG's blog but haven't seen
the high-level paper before so I'll have a look through that as well.

Thanks again,

On 07/05/15 19:05, Ingar Mæhlum Arntzen wrote:
> Hi Daniel
> A brief look at the minutes indicates that this is highly relevant for
> the Multi-device Timing Community
> Group. https://www.w3.org/community/webtiming.
> We'll take some time to digest it, because there are many issues in the
> discussion that fundamentally come down to timing.
> Up front I can indicate that the HTMLTimingObject which we have recently
> drafted http://webtiming.github.io/timingobject/ is not only intended
> for multi-device timing, but for single-device as well.
> The timing group will also soon document a new, improved and generalized
> version of the HTMLTrackElement that interfaces directly with the
> proposed HTMLTimingObject. Together, these two concepts will address a
> wide area of timing related issues, including millisecond precise
> time-alignment of alternative tracks of timed data (from different
> sources), as well as dynamic modification of time-aligned data (live or
> later). With the HTMLTimingObject connected to Shared Motion, these
> properties are also available in the distributed scenario. Though
> standardization will likely take some time, we already have full
> implementations of these concepts in regular use (for instance see demos
> in the MTCG blog). 
> If you wish to look further into the background of this, we have just
> published a paper on distributed temporal composition of Web-based media
> (which is just a fancy way of talking about time-alignment of
> alternative data sources and media sources). This paper gives a high
> level perspective into the approach adopted by the Multi-device Timing CG. 
> https://sites.google.com/site/mediasynchronization/Paper4_Arntzen_webComposition_CR.pdf
> Best,
> Ingar Arntzen, Chair Multi-device Timing Community Group
> 2015-05-07 11:24 GMT+02:00 Daniel Davis <ddavis@w3.org
> <mailto:ddavis@w3.org>>:
>     Hello all,
>     This is to let you know about a discussion within the HTML Working Group
>     Media Task Force that would benefit from wider input, especially from
>     people here in the Web and TV Interest Group.
>     Initially intended as part of the MSE spec, it's currently a collection
>     of use cases for alternate content insertion in media [1]. However at
>     the recent Media Task Force face-to-face meeting [2] it was deemed that
>     the scope could be more than just MSE. There may even be some cross-over
>     with the current GGIE work [3] and so before a solution or target spec
>     is decided on there needs to be more feedback.
>     If this topic is of interest to you please could you take a look at the
>     use cases listed so far and feel free to edit, add or comment based on
>     your experience and requirements? The face-to-face meeting minutes are a
>     good place to see the discussion so far:
>     http://www.w3.org/2015/04/15-html-media-minutes.html#item05
>     Thank you in advance,
>     Daniel Davis
>     W3C
>     [1]
>     https://www.w3.org/wiki/HTML/Media_Task_Force/MSE_Ad_Insertion_Use_Cases
>     [2] https://www.w3.org/wiki/HTML/wg/2015-04-Agenda
>     [3] https://www.w3.org/2011/webtv/wiki/GGIE_TF
Received on Thursday, 7 May 2015 11:41:03 UTC

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