[demistate]

Youtube just announced on their blog that they will be encoding 1080P files for the viewer to watch on Youtube.

http://youtube-global.blogspot.com/2...o-youtube.html

Here is a link to a (poor) sample video: http://www.youtube.com/watch?v=DUM1284TqFc&fmt=37

Here is a sample from a 21MP 6k time lapse, downsampled to 1080P sunset.

http://www.youtube.com/watch?v=9iiwWqoqgI4&fmt=37

Quality isn't so great.

Originals:

http://alexandermejia.net/1080test/1080sunset_m2.mp4 (mp4 uploaded to youtube)
http://alexandermejia.net/1080test/screenshot.png (Screenshot of original)
http://alexandermejia.net/1080test/1080sunset_m2.avi (Black-magic Uncompressed 4:2:2 AVI)