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Re: ARIB-TT

From: Glenn Adams <glenn@skynav.com>
Date: Mon, 17 Nov 2014 16:12:57 +0800
Message-ID: <CACQ=j+dcevi8+VhjuUAwCxx4Keewn8weiP=FUMZZhLJ0x0+nkg@mail.gmail.com>
To: "Dewa, Yoshiharu (OSAKI)" <Yoshiharu.Dewa@jp.sony.com>
Cc: Michael Dolan <mdolan@newtbt.com>, TTWG <public-tt@w3.org>
Added new issues at:

   - Issue 354 [1] - Letter Spacing
   - Issue 355 [2] - Marquee

[1] https://www.w3.org/AudioVideo/TT/tracker/issues/354
[2] https://www.w3.org/AudioVideo/TT/tracker/issues/355

On Mon, Nov 17, 2014 at 3:56 PM, Dewa, Yoshiharu (OSAKI) <
Yoshiharu.Dewa@jp.sony.com> wrote:

>  Hi Glenn,
>
>
>
> Ok. I'm happy to support this.
>
>
>
> Rgs,
>
> -- Yoshiharu
>
>
>
> *From:* Glenn Adams [mailto:glenn@skynav.com]
> *Sent:* Monday, November 17, 2014 4:50 PM
>
> *To:* Dewa, Yoshiharu (OSAKI)
> *Cc:* Michael Dolan; TTWG
> *Subject:* Re: ARIB-TT
>
>
>
> Thanks. Would you like issues to be raised on TTML2 that requests support
> for this functionality?
>
>
>
> On Mon, Nov 17, 2014 at 2:11 PM, Dewa, Yoshiharu (OSAKI) <
> Yoshiharu.Dewa@jp.sony.com> wrote:
>
> Hi Glenn,
>
>
>
> Followings are my understanding, so official translated specification is
> different from this. J
>
>
>
> The arib-tt:letterspacing is an attribute that specify default letter
> spacing pixel units between letters.
>
>
>
> *Values:*
>
> <integer> value expression that use px (pixel) units
>
> *Initial:*
>
> default
>
> *Applies to:*
>
> style, body
> <https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#document-structure-vocabulary-body>
> , div
> <https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#content-vocabulary-div>
> , p
> <https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#content-vocabulary-p>,
> span
> <https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#content-vocabulary-span>
>
> *Inherited:*
>
> yes
>
> *Percentages:*
>
> N/A
>
> *Animatable:*
>
> discrete
>
>
>
> Syntax:
>
> <xsd:attribute name="letter-spacing" type="xsd:string"/>
>
>
>
>
>
>
>
> The arib-tt:marquee attribute specify element auto scrolling function.
> This attribute defines style, direction, speed and loop count can be
> specified.
>
> When the element that is arib-tt:marquee attribute specified includes
> figures/images, these figures/images also scroll together.
>
>
>
>
>
> *Values:*
>
> <string> value expression that separated by white space
>
> *Initial:*
>
> No
>
> *Applies to:*
>
> style, body
> <https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#document-structure-vocabulary-body>
> , div
> <https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#content-vocabulary-div>
> , p
> <https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#content-vocabulary-p>,
> span
> <https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#content-vocabulary-span>
>
> *Inherited:*
>
> Yes
>
> *Percentages:*
>
> N/A
>
> *Animatable:*
>
> discrete? (not sure), continuous
>
>
>
> Syntax:
>
> <xsd:attribute name="marquee" type="xsd:string"/>
>
>
>
> The marquee parameter is string that is separated by white space. The
> parameters are composed four parts
>
> <marquee-style>,  <marquee-direction>, <marquee-speed> and
> <marquee-play-count>
>
> (Ex. arib-tt:marquee=” scroll forward normal 1”)
>
>
>
> <marquee-style>: specifies scroll style as follows;
>
> scroll : from start position to end position, context of element shall be
> scrolled completely. At end position, context of the element is disappeared.
>
> slide : The context of the element is slide in from start position and
> scroll until shows completely, then stopped.
>
> alternate : from start position to end position context of element shall
> be scrolled completely. After showing completely, direction will be
> reversed and scroll again. (endless)
>
>
>
> <marquee-direction> specifies scroll direction as follows;
>
> forward:from left to right (for horizontal writing mode) or from top to
> bottom (for vertical writing mode)
>
> reverse:from right to left (for horizontal writing mode) or from bottom
> to top (for vertical writing mode)
>
>
>
> <marquee-speed> specifies scroll speed as follows
>
> slow
>
> normal
>
> fast
>
>
>
> Actual speed is specified by operational specification for each services.
>
>
>
> <marquee-play-count> specifies scroll loop count. The integer value or
> infinite can be specified.
>
>
>
> Rgs,
>
> -- Yoshiharu
>
>
>
>
>
> *From:* Glenn Adams [mailto:glenn@skynav.com]
> *Sent:* Monday, November 17, 2014 12:53 PM
> *To:* Dewa, Yoshiharu (OSAKI)
> *Cc:* Michael Dolan; TTWG
> *Subject:* 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
>
>
>
>
>
Received on Monday, 17 November 2014 08:13:44 UTC

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