This removes the traditional payment model for the content, so that business models will have to change. Ads can be pushed on the basis of consumer interests or pulled by an explicit request from the user. In both cases the ads would be more interesting, and more effective for the advertisers. Another means is to allow people to vote by phone, so that the extra phone calls become a source of revenue. Annotation of content Annotation of non-textual media already occurs during the production of the media, that is when recording shots for inclusion in film or video productions, but currently the annotations are not in a form for storing with the media.
Examples are the script of the storyline and the camera meta-data, such as focal length, pan, zooms.
Another way of collecting metadata is to have users submit it, e.g. CDDB , where the huge effort required for populating the annotation database is distributed over massive numbers of users. Rather than restricting annotators to rigid predefined sets or unmanageable free text, a more balanced approach is to allow users to define their own ontologies and be able to extend them. Just as librarians have systems for updating their classification schemes, so must online media annotation schemes be able to grow. The different levels in the processing chain in MPEG-4 are better integrated than those that are covered by different IETF and W3C specifications. SMIL doesn't address transport issues, so that the author doesn't know what the different implementations will do, e.g., when the audio becomes out of sync.