YouTube a famous online video sharing site from Google, which allows users to upload 10 minutes video files up to 2GB. Log in to YouTube account click upload option where you can find official announcement in the upload section.

YouTube allows to embed HD videos

It seems YouTube is testing for embedding HD videos, you can find out some of the popular HD videos comes with “Play in HD” in embedding videos.

Example : Embedded HD Video

http://www.youtube.com/watch?v=fRSw-3loPVo&hd=1