Re: tvapi-ACTION-27: Work on triggered interactive overlay requirements

Hi Bin,

Thanks for your help. Then DataCue (TextTrackCue) appears a promising
direction. And I'm planning to follow the pattern of VTTCue [1] to have a
similar one for TV triggers to realize the requirements.

Best regards,
Sean

[1] http://dev.w3.org/html5/webvtt/#the-vttcue-interface

On Mon, Mar 16, 2015 at 6:41 AM, HU, BIN <bh526r@att.com> wrote:

>  Sean,
>
>
>
> Thank you for looking into this and working on it.
>
>
>
> Yes, as a requirement [1], the start time and end time or duration are
> needed to be supported in the trigger so that START_OVERLAY and
> DISMISS_OVERLAY events can be dispatched. More particularly,
> [trigger.types] includes [trigger.types.time] [1]. And other types of
> triggers are required too.
>
>
>
> Let me summarize the basic scenario of Triggered Interactive Overlay in
> order to look into what is the appropriate solution to support it. Some
> more detailed can be found in attached email thread we discussed last year.
>
>
>
> 1.       In-band triggering scenario:
>
> a.       “Trigger” needs to be encoded into video assets’ metadata so
> that a DataCue element can be created within UA, which contains all of
> those information for dispatching a trigger event.
>
> b.      *To-Do* in our spec:
>
>                                                                i.      *Content-type
> *of data in DataCue that is specific to trigger
>
>                                                              ii.      *Data
> structure* of the data in DataCue that is specific to trigger
>
> 1.       *Mandatory elements for a trigger*
>
> 2.       *Optional elements for a trigger*
>
> 2.       Out-band triggering scenario
>
> a.       “Trigger” (and related information) is pre-provisioned in
> platform.
>
>                                                                i.      The
> condition of triggering an event may be subject to content
>
> b.      Based on pre-provisioned event, and current content, events are
> triggered.
>
> c.       The same To-Do: content-type and data elements.
>
>
>
> Please also see attached email thread that we discussed on June 8 2014
> about this scenario.
>
>
>
> Let me know if there are more questions, and I am very happy to discuss it.
>
>
>
> Thank you
>
> Bin
>
>
>
> [1]
> https://www.w3.org/community/tvapi/wiki/Main_Page/Technical_Requirement#Triggered_Interactive_Overlay_Requirements
>
>
>
> *From:* Sean Lin [mailto:selin@mozilla.com]
> *Sent:* Friday, March 13, 2015 1:53 AM
> *To:* TV Control API Community Group
> *Subject:* Re: tvapi-ACTION-27: Work on triggered interactive overlay
> requirements
>
>
>
> Hi all,
>
>
>
> I'm currently working on this item but have a question. Can we assume the
> trigger contains start time and end time, no matter it's from in-band or
> out-band signaling? If so, it appears DataCue element [1] in HTML 5.1 could
> be utilized to realize these requirements (or at least for some in-band
> scenarios).
>
>
>
> Thoughts?!
>
>
>
> Thanks and best regards,
>
> Sean
>
>
>
> [1] http://www.w3.org/html/wg/drafts/html/master/semantics.html#datacue
>
>
>
>
>
> On Tue, Feb 17, 2015 at 10:57 PM, TV Control API Community Group Issue
> Tracker <sysbot+tracker@w3.org> wrote:
>
> tvapi-ACTION-27: Work on triggered interactive overlay requirements
>
> http://www.w3.org/community/tvapi/track/actions/27
>
> Assigned to: Bin Hu
>
>
>
>
>
>
>
>
>
>
>
> --
>
> Sean Lin
>
> Mozilla Taiwan
>
> selin@mozilla.com
>
>
>



-- 
Sean Lin
Mozilla Taiwan
selin@mozilla.com