[whatwg] Scripted querying of <video> capabilities

Chris Double chris.double at double.co.nz
Tue Aug 12 02:13:29 PDT 2008

On Tue, Aug 12, 2008 at 7:47 PM, Kristof Zelechovski
<giecrilj at stegny.2a.pl> wrote:
> What is the advantage of using JavaScript to determine a viable embedding
> method over using alternative streams and fallback content that can include
> the OBJECT element where appropriate?

<video src="foo.ogg">
  fallback content

On a browser that doesn't support video this will use the fallback
content (OBJECT, etc) to instantiate something that can play the Ogg
file. On a browser that supports video and Ogg it will play the video.
On a browser that supports video but not Ogg, how do you then
instantiate a fallback that can play the Ogg file. Without JavaScript
and without providing an alternative source re-encoded in a different


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