LS from ITU-T and Statement of interest to participate

Dear Sirs

Please find attached the official liaison statement from ITU-T SG16 Question 13
titled "LS to W3C on multimedia application frameworks for IPTV services".

We are also attaching our "statement of interest in participating in the Web on
TV Workshop". 

We are looking forward to sharing with you at the workshop,

Best regards 

Masahito Kawamori
Marcelo Moreno

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Title:	Statement of Interest in presenting at Web on TV Workshop


Source:	Rapporteurs of ITU-T Study Group 16, Q13
	Masahito Kawamori (masahito.kawamori@ties.itu.int)
	Marcelo Moreno    (moreno@inf.puc-rio.br) 

Over the last several years ITU-T has adopted a leadership role in promoting
collaborative work on developing global standards for IPTV, first in the IPTV
Focus Group activities and subsequently in the IPTV-GSI. These initiatives have
been very successful in bringing together the IPTV related work going on in a
number of standardization organizations such as ATIS IIF, ETSI TISPAN, DVB
Project, etc. to develop a set of global standards on various aspects of IPTV.
During the last meetings there were some contributions suggesting collaborative
work between ITU-T and W3C.
Firstly, we would like to inform W3C about the background of our work on
Multimedia Application Framework (MAFR) for IPTV services. ITU-T has collected
and profiled the technologies shown to be suitable for IPTV terminal devices to
provide a rich multimedia experience to the user. The MAFR series already has
the following recommendations approved:
?	H.760: Overview of multimedia application frameworks for IPTV [1] , gives an
overview of various multimedia application frameworks that would give
interactivity and rich user experience to IPTV services. It describes both
“middleware-based” standards and “web-based” standards.
?	H.761: Nested context language (NCL) and Ginga-NCL for IPTV services [2]
specifies the IPTV profile of Ginga-NCL, a declarative XML-based language
originally designed for hypermedia document specification for the Web. Ginga-NCL
is an NCL presentation engine built as a component of an IPTV middleware.
?	H.762: Lightweight interactive multimedia framework for IPTV services [3],
gives a subset of HTML, CSS and ECMAScript for use in IPTV terminals. LIME is
very strictly profiled so that it can be used on a resource-limited devices like
TV-sets. LIME can support interactivity such as widgets and portals, as well as
AJAX-like applications on IPTV. LIME can be used with basic services like
video-on-demand (VOD), linear channel service over IP, and EPG.
We have also recently consented a new Recommendation H.763.1 “Cascading Style
Sheet for IPTV Services”, which describes a profile deemed essential for IPTV
services.

Other Recommendations that are being drafted include “SVG for IPTV”,
“ECMAScript: Core and Extension for IPTV Services” and “Lua for IPTV” in the
H.760 series.
ITU-T MAFR series adopts a hypermedia approach for user interactivity, after
considering the requirements from content creators and designers, which are very
concerned about the quality of their products. They usually don’t use text for
their multimedia presentations, because TV experience is different from personal
computer experience: it is collective; there is a greater distance between user
and display; the user looks for entertainment and information more passively,
among other differences. This led us to our realization of the need to
distinguish Multimedia Markup Languages (M3L), such as Ginga-NCL and LIME, from
Text Markup Languages, like HTML.
As one can see, our work on MAFR is quite relevant to web-related multimedia in
general and IP-based TV services in particular. 

ITU-T Study Group 16 Question 13 would like to ask for the opportunity to
present its standardization work on IPTV at the upcoming W3C “Web on TV
Workshop”, to be held 2-3 September 2010 in Tokyo, Japan.  We would appreciate
it very much if W3C will grant our members to participate and present at the
above-mentioned workshop.

References:
[1]	ITU-T Recommendation H.760 - Overview of multimedia application frameworks
for IPTV (2009)
[2]	ITU-T Recommendation H.761 - Nested context language (NCL) and Ginga-NCL for
IPTV services (2009)
[3]	ITU-T Recommendation H.762 - Lightweight interactive multimedia framework
for IPTV services (2010)
[4]	ITU-T Recommendation H.750 - High-level specification of metadata for IPTV
services (2009)
[5]	ITU-T Recommendation H.770 - Mechanisms for service discovery and selection
for IPTV services (2010)
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