Currently Being ModeratedMay 10, 2013 7:13 AM (in response to Chardagha)
That setting is governed by YouTube for each video - so the next time you go to the same video the playing speed will have stuck, but there is no general default setting as far as I know.
Currently Being ModeratedMay 15, 2013 8:17 AM (in response to Chardagha)
YouTube has to work with the raw materials its contrbutors submit. If they get a high-res video, they can post it that way. However, they can't take a grainy, low-res submission and turn it into awesomeness. So it's actually the submittors--not YouTube or Apple--that would have to be re-engineered, and that's not possible.