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WTVML is an XML-based and WML-derived content format designed to allow web site operators to easily develop and deploy Interactive TV services, typically it reduces the time taken for web site operators to create a TV Site, and results in the Site being deployable on a larger number of devices, and is capable of being automatically validated, tested and transformed.
The format follows a strict XML syntax (DTD) that has been developed in response to multiple user requirements by BSkyB, and is now being enhanced by Miniweb Interactive. The format was standardized through ETSI as TS 102 322.
WTVML has the potential to unify the Interactive TV content creation industry, which has been hampered by proprietary "middlewares" and a lack of browser standards.
The fragmentation of technologies available to build Digital TV platforms has meant that typical web site operators have had no common content format available to them to allow them to develop their TV Site once, and deploy it unchanged across multiple networks and devices.
WTVML services can be automatically and dynamically transformed into various forms of HTML/JS/CSS, making them compatible with traditional web browsers as well as WTVML native browsers, and allowing the network operator to manage his platform specific features independently from the standard used by the web site authors. WTVML follows a web 2.0 style model, in that complete applications are DTD driven, allowing TV Style services to be created without the use of Script.