[whatwg] Query supported formats for media elements

[Maik Merten]

Oh, I see that there already was/is a discussion on querying media
format support (
http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2008-August/015620.html
).

Anyway, the question when error flags are supposed to be set and if such
flags could be used to "query" media format support with the help of the
type-attribute of the source-element may still be of interest.


Maik