I would like to know what (なんだけど / なんですが) means? I think these two forms are
the same, but when I asked in class their meaning, I was told that they mean
nothing, so I'm kinda confused.

For example, in this short sentence: そのことなんだけど, what is the function of (何 + だ
+ けど [softener])? It appears in: <https://www.youtube.com/watch?v=s7xM_NVn5Vc>
minute 3:32

Besides of its function, are there any grammar patterns or any particular
cases in which なんだけど should be used?

Thank you so much in advance for your help and your explanations!
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2018-04-24T18:20:24.453
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2018-04-24T23:49:24.313
2018-04-24T23:41:43.670
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question
grammar expressions anime no-da explanatory-の
なんだけど Meaning and grammar patterns