Bad vibe about second supporting film (1,5)

I believe the answer is:

b-movie

'supporting film' is the definition.

'bad vibe about second' is the subsidiary indication.
'bad' is an anagram indicator.
'about' is an insertion indicator.
'second' becomes 'mo'.
'vibe' anagrammed gives 'bvie'.
'bvie' placed around 'mo' is 'bmovie'.

I've seen this clue in The Times.

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