Re: [xml-dev] RE: Highly Declarative Designs

[David Carlisle <davidc@nag.co.uk>]

On 08/02/2011 13:01, Costello, Roger L. wrote:

>     <audio>
>         <source src="witchitalineman.ogg">
>         <source src="witchitalineman.mp3">
>     </audio>
>

> A browser that can play back Ogg Vorbis files will look no further
> than the first<source>  element. A browser that can play MP3 files
> but not Ogg Vorbis files will skip over the first<source>  element
> and play the file in the second<source>  element.


Are you sure?

I don't see anything in here:

http://www.whatwg.org/specs/web-apps/current-work/#concept-media-load-algorithm

to suggest that the browser will use the file extension in this case, 
rather than fetching the specified resouce and determining its file type 
by inspecting its content.

David