Webkit should support video in embedded objects. Many sites use it and many browsers support it as well.
Created attachment 28732 [details] a very poor prof of concept I am ashamed of myself by posting this patch. But it would be very bad of my part to keep it hidden here in my disk while I can't work on this right now.
I think that making HTMLEmbedElement depend on HTMLMediaElement a very much better idea.
I will be working on this in the next couple of days. Expect some progress soon.
> Many sites use it and many browsers support it as well. What is the actual user visible problem that's being fixed here? What are the sites that are broken due to this? I'm marking INVALID for now, since this seems to have been abandoned, but please feel free to re-open if you'd like to follow up.