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RE: proposed updated response to MPEG on codecs

From: Michael Dolan <mdolan@newtbt.com>
Date: Thu, 16 Oct 2014 10:22:53 -0700
To: "'Timed Text Working Group'" <public-tt@w3.org>
Message-ID: <019801cfe965$d3974a70$7ac5df50$@newtbt.com>
I cannot support defining a formal media type string (including any of its
parameters) on an informal wiki.  This is highly irregular.  I believe its
general syntax and semantics must be normatively defined in TTML2 as part of
the media type (and preferably in my view) then registered with IANA (not
the other way around either).




From: Nigel Megitt [mailto:nigel.megitt@bbc.co.uk] 
Sent: Thursday, October 16, 2014 9:23 AM
To: Michael Dolan
Cc: Timed Text Working Group
Subject: Re: proposed updated response to MPEG on codecs



On 16 Oct 2014, at 16:52, Michael Dolan <mdolan@newtbt.com> wrote:

Thanks for fixes.   I assume Dave will update before posting.


As for the your second point, I am not sure that I follow.  We must define
the new media type parameter formally in TTML2 or our decisions and this
communication are meaningless.  Is your point that we did not agree as a
group to register the update with IANA?  I agree, but I also did not say
that to MPEG (although I personally think we should).



I was expecting the MIME type parameter to be external to TTML2 and defined
on the registry page. I'm not against updating the IANA registration if
that's useful but we haven't decided to do that. If we do, then clearly the
relevant part of the TTML 2 spec would need updating to match. If we don't,
then there may be no changes resulting, in TTML2.  


Since there may therefore be no change in TTML 2 I don't want to give the
wrong impression. 






From: Nigel Megitt [mailto:nigel.megitt@bbc.co.uk] 
Sent: Thursday, October 16, 2014 8:39 AM
To: Michael Dolan; 'Timed Text Working Group'
Subject: Re: proposed updated response to MPEG on codecs


Thanks for the quick turnaround Mike. 3 things:


typo: s/medaType/mediaType

correction: s/procProfile/processorProfiles


Query: do we want the sentence "Its parameters will be extended in TTML2 to
include the proposed syntax above." ? Unless we're changing the IANA
registration then I do not think we have agreed to do this.


Kind regards,





From: Michael Dolan <mdolan@newtbt.com>
Date: Thursday, 16 October 2014 16:29
To: 'Timed Text Working Group' <public-tt@w3.org>
Subject: proposed updated response to MPEG on codecs
Resent-From: <public-tt@w3.org>
Resent-Date: Thursday, 16 October 2014 16:30


Per my action item from today, please see the attached.


Over to Dave and Nigel for review to see if I captured where we ended up in
today's call; then over to Dave to upload to MPEG (or I can if needed).


Time is very short and should be posted Sunday morning CEDT.






Michael A DOLAN

TBT, Inc.  PO Box 190

Del Mar, CA 92014

(m) +1-858-882-7497


Received on Thursday, 16 October 2014 17:23:30 UTC

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