Re: Right usage of TTML for video

I found another links below not sure if it's obsolete now.

http://www.w3.org/2008/12/dfxp-testsuite/web-framework/START.html
it is also using a client side script as well and I could see comment
metioning TTML usage in "HTML5_player.js"

usage:

<video src="example.movie" id="video" controls>
 <text lang='en' type="application/ttaf+xml"
src="testsuite/Content/Br001.xml"></text>
 </video>

As a browser vendor, it is a different story if TTML is expect to be bound
to any other elements except for track.  Can I say <track > is the only
element that TTML can be work with? I mean without client side script, and
if browser vendor is trying to support it natively.

Regards,
Eunice


On Mon, Jun 24, 2013 at 10:27 PM, Glenn Adams <glenn@skynav.com> wrote:

>
> On Mon, Jun 24, 2013 at 4:42 PM, Eunice Yu <yonhee.yu@gmail.com> wrote:
>
>> Hello people.
>> I'm very new to TTML and FCC regularion brought me here. after short
>> surveying, still very confused about how to deal with TTML in modern
>> browser implementation.
>>
>> I can see several links which seem to demonstrate TTML.
>> http://www.cwmwenallt.com/ttml/ttml-demo.htm
>> http://www.html5labs.com/HTML5CaptionDemo/
>>
>> and they are all something like using track element.
>>
>> <video width="640" height="480" controls>
>>   <source src="video.mp4" type="video/mp4" />
>>   <track src="ttml.xml" kind="subtitles"srclang="en" label="English" />
>> </video>
>>
>
> this is correct on the surface syntax, the real issue is whether the
> browser directly supports rendering TTML or not; some do, some don't; it is
> sort of like SVG, at one point, many browsers didn't support SVG format
> directly, but now most do, at least on desktop browsers
>
> there is some work afoot to add TTML support to some of the browsers that
> don't support it today, so I expect the level of support to improve over
> time; in the mean time, you may find it necessary to use client side
> scripting to parse TTML into HTML/CSS for rendering purposes on the
> browsers that don't yet support it;
>
>
>>
>> but I am not sure if that is right implementation based on current
>> standard. if it is, it's wired that track does not have mime type. and if
>> it's not, I don't see any HTML element who requires TTML as text subtitles.
>>
>
> this is similar to the <video/> and <img/> elements that similarly don't
> require support for any specific video or image format; the <track/>
> element doesn't dictate which text track formats are to be supported either;
>
>
>>
>> so my question is where web developers are suppose to put TTML and on
>> which element should browser work to make it happen?
>>
>> on second thought, javascript can request and parse specific xml(TTML
>> here) and display them being styled somewhere on the web page. can I say
>> TTML is only for this?
>>
>> Any comments would be very helpful.
>>
>> Thank you in advance.
>> Eunice
>>
>
>