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 --------- attached text ---------- 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)