I can get a Youtube HD video to embed in standard size using allvideos plugin. 

Changing width parameters didn't work...has anyone had luck embedding the new youtube format as widescreen?

thanks

Has anyone figured this out?  My Youtube videos are the old 4:3 which make the widescreen vids look small, but I do recall changing the default size in the article (not in the parameters) before, I just can't remember where I changed it to change it to the 16:9 dimension without having to set the parameters each time.  Where can I change the default size of the embedded Youtube and will it affect the other video formats also or only Youtube?