I fear that the virtual worlds industry, will end up like the gaming industry -- small islands that stifle large scale innovation. In contrast, the internet model, with its defined stack, is a much better example to arrive at the full 3D3C real virtual world. In any event, the call state:
INTERNATIONAL ORGANISATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE NORMALISATION ISO/IEC JTC1/SC29/WG11 CODING OF MOVING PICTURES AND AUDIO
ISO/IEC JTC 1/SC 29/WG 11/N9903 Archamps, France, May 2008
Title: MPEG-V Extended Call for Requirements
MPEG, a working group in ISO/IEC, has produced many important standards (MPEG-1, MPEG-2, MPEG-4, MPEG-7, and MPEG-21). MPEG feels that it is important to standardize intermediate formats and protocols for “Information exchange with Virtual Worlds”, MPEG-V in the areas of “Interfaces between virtual worlds” and “Interfaces between virtual worlds and the physical world”.
As stated in the w9424 “Information exchange with Virtual Worlds 'Context, Objectives and Use Cases'”  the intended standard for ‘Information exchange with Virtual Worlds’ will consist of at least three parts:
· Part1: Architecture
· Part2: Interfaces between virtual worlds
· Part3: Interfaces between virtual worlds and the physical world
The first part (Part1: Architecture) will describe an overall architecture that can be instantiated for all the foreseeable combinations of virtual worlds and real world deployment.
The second part (Part2: Interfaces between virtual worlds) will allow for the interchange of characteristics between virtual worlds taking native formats and scalability into account.
The third part (Part3: Interfaces between virtual worlds and the physical world) will allow for the interfacing of sensors and actuators to the virtual world taking native formats into account.
MPEG has produces “Draft requirements for MPEG-V”  based on the contributions received on a request for requirements issued at the 83rd MPEG meeting (
See the initial draft.