Crossword Genius

Rotten to hide when not being filmed (9)

Ross

I believe the answer is:

offscreen

I'm a little stuck... Click here to teach me more about this clue!

'not being filmed' is the definition.
I can't judge whether this defines the answer.

'rotten to hide' is the wordplay.
'rotten' becomes 'off' (rotten food is 'off').
'to hide' becomes 'screen' (I've seen this before).
'off'+'screen'='OFFSCREEN'

'when' is the link.

Can you help me to learn more?

(Another definition for offscreen that I've seen is " TV equivalent of offstage".)

I've seen this clue in The Daily Express.
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