I've been seeing announcements about various XML-related specs having to do with multimedia and rich graphics. Does anyone have some perspective as to how they fit together (or don't), which have the most potential in the "real world", and any observations as to what (if anything) one can do with generic XML tools to work with these formats? Is there some good independent/neutral source of information about this stuff?
The ones I know of include:
SMIL 2.0 (new W3C Recommendation, see http://www.w3.org/TR/smil20/)
X3D (successor to VRML) launched (http://xml.coverpages.org/ni2001-08-09-a.html)
MPEG-7 (an XML packaging format to bind multimedia objects together?) http://www.mpeg-7.com/