I wouldn't vote against the OMB credit, but it could be OCB as in "Based on Character By". Just my opinion. 

Rory

Quoting Silence_of_Lambs:

Quote:
"Based On ..." is how according to the rules an OMB credit is defined.

So for DVDProfiler purposes only OMB is correct.

Only if you ignore the notes for each credit.  While "Based on" is how the OMB credits are formatted, it is to be used for screenplays that are "Adapted from another medium."  That means they took a book and turned it into a film.  Since none of the films made after Planet of the Apes were adapted from a book, OMB is not correct.

According to the notes, OCB is for "screenplays based on characters from another work."  Pierre Boulle did not write a book titled, as an example, Beneath the Planet of the Apes.  That film, as well as the other sequels, were based on the characters from the book he did write.  So, for Profiler purposes, only OCB is correct.

I honestly don't know why this is a question as the credits, from the film, are quite clear. 

OCB. The reason? Well it speaks for itself. Just like TheMadMartian and hal9g explained.

The first film gets an OMB, the later films OCB.  Because they read "characters by."

Sorry but I have to disagree.

Allow me to quote the rules which clearly say that an OMB is:

Quote:
Based on [anything] By

If someone could explain to me in how far "Characters" are not part of the group "Anything" and into which group that isn't part of "Anything" they do belong instead, I'd happily agree.

Mind you, I'm not saying where this should be entered (Here I agree with the majority already), but where according to the rules it has to be entered. And this is a difference.

OK
I could agree on this interpretation.

I had a similar problem with a slight variation recently.
The credit is:

Quote:
Based on their [the screenwriters] interpretation of Agatha Christie's 'Miss Marple'

How would we handle this then?
In my contribution I explained my interpretation of the rules and it got accepted as OMB.