Re: ARIB-TT

Yoshiharu-san,

Thanks for your email explaining the ARIB-TT extensions, which I understand
are based on supporting features in legacy Videotron Lambda and other (?)
formats.

As we move forward with TTML2, it would be useful to obtain further input
on, for example, whether new TTML2 features could interoperate (at least at
the semantic, if not syntactic level) with the ARIB-TT features. For
example, we have already drafted specification text for supporting:

   - border [1]
   - continuous animation [2]
   - ruby (ルビ) [3][4][5][6]
   - tate chu yoko (縦中横) [7]

We are also planning to support author supplied fonts (i.e., font-face),
text shadow (in addition to the current text outline support), and have
requests on file to support audio. Thus far, however, we don't have
proposals to support letter spacing or marquee functions. It would be
useful to learn if ARIB would wish to have TTML2 support these latter two
functions (letter spacing and marquee) as well.

Regards,
Glenn Adams

[1]
https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#style-attribute-border
[2]
https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#animation-vocabulary-animate
[3]
https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#style-attribute-ruby
[4]
https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#style-attribute-rubyAlign
[5]
https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#style-attribute-rubyOffset
[6]
https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#style-attribute-showBackground
[7]
https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#style-attribute-textOrientation




On Mon, Nov 17, 2014 at 8:23 AM, Dewa, Yoshiharu (OSAKI) <
Yoshiharu.Dewa@jp.sony.com> wrote:

>  Hi,
>
>
>
> There are nine extensions for arib-tt name space. It is derived from
> legacy Japanese subtitle system.
>
>
>
> arib-tt:font-face : Extended for Gaiji (External character) feature using
> svg/woff font file
>
> arib-tt:keyframes : Changing various style according to keyframe element
>
> arib-tt:audio : play receiver's embedded sound or cli sound file in
> subtitle stream
>
> arib-tt:animation : Define animation timing and style for arib-tt:keyframes
>
> arib-tt:border : syntax sugar for border setting. (style, width, color)
>
> arib-tt:letter-spacing : letter spacing specified by pixel value
>
> arib-tt:marquee : marquee function
>
> arib-tt:ruby : text ruby (much simplified W3C ruby spec…)
>
> arib-tt:text-shadow : text shadow setting offset X/Y and blur radius and
> color
>
>
>
> Hope this helps,
>
>
>
> -- Yoshiharu
>
>
>
> *From:* Michael Dolan [mailto:mdolan@newtbt.com]
> *Sent:* Saturday, November 15, 2014 8:33 AM
> *To:* 'TTWG'
> *Subject:* RE: ARIB-TT
>
>
>
> I asked a Japanese TV colleague last week.  I was told that it’s currently
> authorized for UHDTV OTA and is planned for OTT. I’m trying to learn more
> and see if they want to get their extensions added to TTML/IMSC…
>
>
>
>                 Mike
>
>
>
> *From:* Glenn Adams [mailto:glenn@skynav.com <glenn@skynav.com>]
> *Sent:* Friday, November 14, 2014 3:28 PM
> *To:* TTWG
> *Subject:* ARIB-TT
>
>
>
> I've recently been apprised of the work by ARIB on extensions to TTML via
> ARIB-TT, pages number 57 and following in [1].
>
>
>
> We should try to learn more about who is doing this work and interface
> with them regarding a number of extensions they have defined (in an ARIB
> defined namespace).
>
>
>
> [1] http://www.arib.or.jp/english/html/overview/doc/2-STD-B62v1_0-1p2.pdf
>