The most common and most likely answer to this crossword clue is the 4 letter word IMDB
I've seen this crossword clue in Independent
I
M
D
B
Buddy explains!
The straight part
We know that "Often overlooked film’s dub might be listed here? (1,1,1,1)/Often overlooked film’s dub might be listed here?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case often overlooked film’s dub might be listed here? (1,1,1,1)/often overlooked film’s dub might be listed here? = imdb.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.