As a content provider, what do I need to do to upload YouTube HD videos
What format do I need to encode my videos with?
For the highest quality, YouTube now recommends these setting for your video:
MPEG4 (DivX, Xvid) format
64k Mono or 128k Stereo MP3 audio
30 frames per second
Up to 1GB file size and 10 min. duration
However, YouTube accepts a wide range of video file formats such as .WMV, .AVI and .MOV. Again, you may get the best results from converting your file to MPEG4 video with MP3 audio.