I purchased a Blu-Ray Movie, How Do I Play it on iTunes & iDevices?

Question

I was cleaning my apartment today and I found a copy of The Dark Knight that I purchased when it was released (2009 I beleive) and it has 3 discs and 1 of them says Digital Copy in DVD format. I inserted that disc into my iMac and it took me to iTunes>Devices>Digital Copy and it asked for a code. I inputed the code on the print out and it stated it was invalid. I re-typed the code and same error. I looked at the small print and found out the code expired 12/2009.
I tried Warner Bros' website but they were no help.
I purchased this movie for something like $25 and I want to have it on my iPhone and iPad. The code that I never redeemed expired and I do not want to buy the movie again. Is it possible to rip the movie using a Blu-Ray burner and convert it into an iPhone/iPad friendly format? If so, how do you go about that? What file format is the right one?
I legally bought this title and it's a bit frustrating to find out I can't view it how I want due to an expired code.

Answer 1

Yeah, it's a bit slimy what they do with the short-lived digital version codes and sometimes you even see the DVDs for sale new in a store with the code already expired.
And, yes, it is still illegal to rip your DVD even though you have purchased viewing rights to the movie already.  It's the actual ripping process that's illegal regardless of why it is done, and even asking about how to do this on Apple's site can get a topic removed (it's specifically prohibited in the Terms of Use).
Oh, I guess you could write the DVD makers and ask if a code can be issued, but as you have found it's not really in their intere$t because right now your only option for a digital version is to go out and buy the movie all over again in digital format from somebody like Apple.