Just to give you a heads up even though it is a digital it will either download as HD or SD. I could be wrong but more than likely since this is from a DVD it will be in SD while if it came from a Blu ray it would have been HD. Then again I could be wrong on this but pretty sure your code is SD.
Ive read over it more closely and the Green Mile DVD does not say anywhere HD. However I do have another DVD auction for The Butler and that code is HD. So maybe all new DVDs are HD? I bought the Green Mile DVD a while ago