Thinktechno.com

Youtube feels fairly restricted with it 1GB upload limit, but as of now Youtube will offer your with 2GB of space to upload your videos as well  as directly link to an high definition video.

To share a link to the HD version of your video, simply add “&hd=1″  to the end of the URL and will play in HD as soon as someone plays it. Besides that you could also embedded, simply click the customize button to the right of the embed box on the video page, some options should appear, click on “play in HD”. Now you embed code will play HD videos at (853×505) resolutions for maximum viewing pleasure.

Pranjal