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w3c / sync-media-pub

Repository of the Synchronized Multimedia for Publications Community Group
http://w3c.github.io/sync-media-pub
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`metadata` element or `sync:link` element? #55

Open iherman opened 3 years ago

iherman commented 3 years ago

At the moment, that element is fairly underspecified; it comes that way from the SMIL specification. The problem I see is that the metadata element relies on the inclusion of other types of metadata coming in XML. That may have been a reasonable assumption in 2008 (when the latest version of SMIL was published) but may not be today. How would I use schema.org statements?

I wonder whether it is not better (while keeping metadata for SMIL's sake) to introduce a sync:link sub-element, whose only purpose would be to link to an external metadata file, in whatever format. That would follow the approach used in EPUB.

marisademeglio commented 3 years ago

This seems entirely reasonable to me. We haven't come across use cases involving metadata, so that aspect is definitely underspecified.