[whatwg] Serving up Theora <video> in the real world

Maciej Stachowiak mjs at apple.com
Sat Jul 11 12:15:47 PDT 2009

On Jul 11, 2009, at 7:56 AM, Ian Fette (イアンフェッティ) wrote:

> 2009/7/11 Robert O'Callahan <robert at ocallahan.org>
> On Sat, Jul 11, 2009 at 9:38 PM, Philip Jägenstedt  
> <philipj at opera.com> wrote:
> Well I disagree of course, because having canPlayType("video/ogg")  
> mean anything else than "can I demux Ogg streams" is pointless.
> So you want "canPlayType" to mean one thing when provided a type  
> without codecs, and another thing when provided a type with codecs.  
> I don't think that's a good idea.
> Anyway, it's too late. If you care passionately about this you  
> should have reopened this discussion months ago, not now that two  
> browsers have just shipped support for the API in the spec.
> Disagree -- the whole point of candidate rec (which the spec is  
> driving towards) is to find out how implementable the spec is -- not  
> just from the browser side, but from a web author side as well. If a  
> feature turns out to not be implementable /  usable in practice,  
> that is certainly valid feedback at this stage.
> (Not to say it wouldn't be better to have had this conversation  
> earlier, but I definitely don't think that the ship has sailed on  
> this, and in practice some things you only find out once it's  
> implemented and you can actually try using it.)

At this point, I think <video> should only be changed incompatibly if  
it is discovered to be literally unimplementable (unlikely now that  
it's been implemented twice) or unusable for its desired use cases,  
and an incompatible break is the only fix. But I don't think the issue  
at hand is that serious - we're just talking about potential  
refinement. The design we have now for canPlayType is not my favorite,  
but I can't really say it's broken.


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