From Media Annotations Working Group Wiki
Currently no text here - just pointers to existing discussion.
Some needs extracted from http://lists.w3.org/Archives/Public/public-media-annotation/2008Oct/0010.html
- uniform access to selected metadata across a variety of file formats.
- semantic mismatch problem (the same work in different formats): "What does the DOM API return when the script asks for "Artist" -- does the composer get included from file B, even though in A he's been put in the title(faute de mieux)?"
- access to basic information about ownership