Re: updated profile registry

I haven't gone back to look up the notes we made but I'm pretty sure that when we looked at this before we found the answer was that it had to be part of a Recommendation, and adding a new one of those would require a Charter change.

Nigel


From: Michael Dolan <mdolan@newtbt.com<mailto:mdolan@newtbt.com>>
Date: Wednesday, 23 September 2015 22:50
To: 'TTWG' <public-tt@w3.org<mailto:public-tt@w3.org>>
Subject: RE: updated profile registry
Resent-From: <public-tt@w3.org<mailto:public-tt@w3.org>>
Resent-Date: Wednesday, 23 September 2015 22:50

Hmm, I wonder if the W3C arrangement with IETF/IANA would allow us to publish a Note for this purpose?  Nigel/Thierry?

                Mike

From: Glenn Adams [mailto:glenn@skynav.com]
Sent: Wednesday, September 23, 2015 2:36 PM
To: Michael Dolan <mdolan@newtbt.com<mailto:mdolan@newtbt.com>>
Cc: TTWG <public-tt@w3.org<mailto:public-tt@w3.org>>
Subject: Re: updated profile registry

right, except that would make this dependent on TTML2 publishing schedule, which is why I had suggested at one point to publish an updated media registration (with new parameter) as a standalone document

On Wed, Sep 23, 2015 at 3:30 PM, Michael Dolan <mdolan@newtbt.com<mailto:mdolan@newtbt.com>> wrote:
Yes, exactly my expectation for TTML2.

                Mike

From: Glenn Adams [mailto:glenn@skynav.com<mailto:glenn@skynav.com>]
Sent: Wednesday, September 23, 2015 2:26 PM

To: Michael Dolan <mdolan@newtbt.com<mailto:mdolan@newtbt.com>>
Cc: TTWG <public-tt@w3.org<mailto:public-tt@w3.org>>
Subject: Re: updated profile registry



On Wed, Sep 23, 2015 at 3:15 PM, Michael Dolan <mdolan@newtbt.com<mailto:mdolan@newtbt.com>> wrote:
Yes, understood – saw that.  I just misremembered that it had been codified there.

Perhaps TTML2 doesn’t need the shorthand (tokens or operators) at all.

FYI, we are trying to decouple the registry from both TTM2’s publication schedule and any substantive technical provisions such that it can be approved for publication as a Note by TTWG consensus. This forces an informative suggestion in the registry since the details are not codified elsewhere.

If this syntax is to be used with some yet to be defined parameter to be used with a MIME type specification, then it could be defined wherever that parameter is defined. For example, if a 'codec' or 'codecs' parameter is defined for use with application/ttml+xml, then it could be defined in that context.


Regards,

                Mike

From: Glenn Adams [mailto:glenn@skynav.com<mailto:glenn@skynav.com>]
Sent: Wednesday, September 23, 2015 1:58 PM
To: Michael Dolan <mdolan@newtbt.com<mailto:mdolan@newtbt.com>>
Cc: TTWG <public-tt@w3.org<mailto:public-tt@w3.org>>
Subject: Re: updated profile registry



On Wed, Sep 23, 2015 at 1:46 PM, Michael Dolan <mdolan@newtbt.com<mailto:mdolan@newtbt.com>> wrote:
I’ve updated the profile registry based on comments received.  Note that the URL has changed:
https://www.w3.org/wiki/TTML/ProfileRegistry

FYI, a redirect survives at the “…CodecsRegistry” URL.

I addressed the comments (I think) as agreed except for one – after further thought I decided to delete the example rather than try to further explain 14496-30 informatively.

I thought the combination syntax was in TTML2, but it is not (should be).  So, I left in an informative suggestion for applications using the registry to enable it.

TTML2 uses a more verbose, less compact syntax for expressing conjunctive and disjunctive combination, about which see [1], which employs any() and all() functions. We abbreviated these in the proposed syntax in the registry to accommodate the desire for an abridged representation.

IMO, we do not need the abridged syntax in TTML2 itself.

[1] https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#profile-attribute-processorProfiles



I vaguely recall a 2nd update email on the EBU URN’s but I can’t find it.  If my memory is in fact better than my email filing, then apologies and please send me the changes again.

Regards,

                Mike

-------------------------
Michael A DOLAN
TBT, Inc. PO Box 190
Del Mar, CA 92014
(m) +1-858-882-7497<tel:%2B1-858-882-7497>