Since setting up my Apple TV, I have purposely purchased my Blu-Ray movies with included digital copies when possible. The packaging for each title includes the iTunes icon, and indeed the copies are unlocked within the iTunes software. However, each one seems to have its own way of going about this process. Some have special windows to enter the code and some require inserting the "Digital Copy Disc". Odd and nonuniform, but no problem.
The problem I'm having with digital copies is this: not all digital copies are created equal, at least not in the eyes of iTunes. While all result in local SD renditions of the movies on my desktop PC, only some appear in my Purchases list under iTunes Store->Movies->Purchased.
So far I have entered codes for these movies: Kung Fu Panda 2, Captain America, X-Men First Class, Puss in Boots, and The Adventures of Tintin. Of that group, Tintin, Captain America, and Puss in Boots show on my Purchased list.
This is significant, as the resolution of the iTunes Store version is at minimum 720p, an improvement over the local digital copy. As I understand it, movies in the Purchased list under the iTunes Store are eligible for cloud streaming to my Apple TV and can also be re-downloaded. Should my hard drive crash and I lose all my local content, I would be able to download these movies again, just like apps in the App Store.
Can anyone shed some light on why some digital copies are treated differently by Apple and iTunes? Is there some way to tell from the packaging what you're really getting?