Filming the drunk male leaving various clubs and pubs (9)

I believe the answer is:

nightlife

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'filming' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

I don't understand how the rest of the clue works.

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(Other definitions for nightlife that I've seen before include "Entertainments after dark" , "urban activities?" , "some belated fun" .)

I've seen this clue in The Independent.

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