[whatwg] HTML 5 video tag questions

Tab Atkins Jr. jackalmage at gmail.com
Tue Jul 14 05:51:42 PDT 2009

On Tue, Jul 14, 2009 at 5:05 AM, Robert O'Callahan<robert at ocallahan.org> wrote:
> On Tue, Jul 14, 2009 at 9:46 PM, Boris Zbarsky <bzbarsky at mit.edu> wrote:
>> For the current model, note that all the text says is "should not show
>> this content to the user".  While this is not defined anywhere, it doesn't
>> seem to indicate that the content's DOM should not exist, for example.  In
>> Gecko, at least, the image in your example will be loaded and hence its
>> onload will fire.
> There's actually a fairly major related problem here. We hide the fallback
> content by treating it as display:none. Currently Gecko has a huge bug where
> a display:none plugin does not load/run. This works out well for the video
> fallback case. If we fix that bug, then unless we do some special magic,
> plugin-based video fallback will run and play audio while the <video>
> element plays --- very bad.
> People have already discovered that <video src="hellokitty.ogv"><object
> data="hellokitty.ogv"></object></video> plays the audio track twice in
> Firefox, and aren't happy about it, although it's what the spec seems to
> suggest. I'm not sure how to modify the spec in a sane way to fix this case,
> though.

How do y'all currently handle <noscript> content in a context that
allows scripts?  What if there was a <video> or <object> in the


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