Fwd: Re: [MEDIA_PIPELINE_TF] ISSUE-37: ViewPort-Support

forwarding to archive with proper ISSUE ID (ISSUE-37)

-------- Original Message --------
Subject: Re: [MEDIA_PIPELINE_TF] ISSUE-34: ViewPort-Support
Resent-Date: Wed, 10 Aug 2011 10:22:48 +0000
Resent-From: public-web-and-tv@w3.org
Date: Wed, 10 Aug 2011 20:22:01 +1000
From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
To: Scott Wilson <scott.bradley.wilson@gmail.com>
CC: Cyril Concolato <cyril.concolato@telecom-paristech.fr>, public-web-and-tv@w3.org

On Wed, Aug 10, 2011 at 8:08 PM, Scott Wilson
<scott.bradley.wilson@gmail.com> wrote:
>
> On 10 Aug 2011, at 10:46, Silvia Pfeiffer wrote:
>
>> On Wed, Aug 10, 2011 at 5:22 PM, Cyril Concolato
>> <cyril.concolato@telecom-paristech.fr> wrote:
>>> Hi Sylvia,
>>>
>>> Le 10/08/2011 02:38, Silvia Pfeiffer a écrit :
>>>>
>>>> I wonder if instead it might be worth analysing if we can come up with
>>>> a<track>  kind that allows overlaying hyperlinkable regions onto the
>>>> video?
>>>
>>> Why wouldn't it be possible to have a track element point to some animated
>>> SVG file?
>>
>> The <track> element points to timed text, i.e. to a file that provides
>> text fragments along the timeline of the video. SVG is not suitable
>> for that use. Just like you cannot put a SVG into a <audio> or <video>
>> element, you won't be able to put a SVG into a <track> element.
>>
>> However, we can e.g. create a WebVTT file with data in the cues that
>> point to SVG files or whatever else we want to time-align with the
>> video and link that in the <track> @src with @kind=metadata.
>
>
> Right, so we would need a WebVTT cue node type for such a link to the SVG or whatever. Maybe a HTML <a> or <link> tag.
>
> However I think a major point of WebVTT is it is simple to create and to parse tracks, which is why it has such a restricted document model, so we should be parsimonious in extending the spec.

Yes, we need to be careful how we extend it.

Regards,
Silvia.