The HD revolution is now in full swing and you can now embed your YouTube videos to show in HD by default easier than ever. While you can still use the old &ap=%2526fmt%3D18 code before the &h1 in your embed code, you can now simply click on the video's embed code and the resulting menu appears to "Show In HD". Click that check box, copy the embed code and proceed as normal. It's going to be a great tool for making the internet a much more attractive place, putting HD in the hands of average YouTuber. See the difference below.