Re: ISSUE-203 (ttp:version): Add ttp:version to allow author to indicate which version of TTML content was created for. [TTML.next]

On Mon, May 13, 2013 at 12:39 PM, Michael Dolan <mdolan@newtbt.com> wrote:

> Even if we keep the old NS, we’ll have to create a new set of profiles.
>

I don't believe we *have* to. We wouldn't need to change the current
dfxp-transformation or dfxp-presentation profiles, which are already too
minimal to be of much use (without extensions). We would define a new
dfxp-full profile, thought we might assign it a new designator, like
dfxp-full-2.

So I'm thinking having a version would still be useful unless we introduce
a new NS, and I think that might not be a good idea. We did go to the
trouble of defining the existing NSs as "mutable" in order to grow them in
the future without having to change NS URIs.


> ****
>
> ** **
>
> *From:* Glenn Adams [mailto:glenn@skynav.com]
> *Sent:* Monday, May 13, 2013 10:35 AM
> *To:* Michael Dolan
> *Cc:* Timed Text Working Group
> *Subject:* Re: ISSUE-203 (ttp:version): Add ttp:version to allow author
> to indicate which version of TTML content was created for. [TTML.next]****
>
> ** **
>
> I'm presently assuming we won't change the NS URL. If we do, then it
> wouldn't be needed.****
>
> ** **
>
> On Mon, May 13, 2013 at 9:17 AM, Michael Dolan <mdolan@newtbt.com> wrote:*
> ***
>
> Don't we already have the tools to implicitly (but clearly) signal the
> version with both the namespace and the pre-defined profiles? Don't all
> these have to change in TTML.next? What does the version (as defined in
> SVG) add?
>
>         Mike****
>
>
> -----Original Message-----
> From: Timed Text Working Group Issue Tracker [mailto:sysbot+tracker@w3.org
> ]
> Sent: Sunday, May 12, 2013 1:46 PM
> To: public-tt@w3.org
> Subject: ISSUE-203 (ttp:version): Add ttp:version to allow author to
> indicate which version of TTML content was created for. [TTML.next]
>
> ISSUE-203 (ttp:version): Add ttp:version to allow author to indicate which
> version of TTML content was created for. [TTML.next]
>
> http://www.w3.org/AudioVideo/TT/tracker/issues/203
>
> Raised by: Glenn Adams
> On product: TTML.next
>
> Add ttp:version to allow author to indicate which version of TTML content
> was created for. See <svg version> [1] as an analogy.
>
> [1] http://www.w3.org/TR/SVG/struct.html#SVGElementVersionAttribute
>
>
>
>
> ****
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> ** **
>