The real tense of "I'm going to be talking about"

I just listened to a video in which the speaker said "I'm going to be talking about....". Can we change that to "I'm going to talk about..."?

Solution 1:

The sentence

[1.] "I'm going to be talking about...."

has a different meaning from

[2.] "I'm going to talk about..."

[1] and [2] differ in aspect (i.e. the internal temporal structure of the event). In [1] the speaker is focussing on the talking as an ongoing (continuous) event, whereas in [2] the focus is on the talking as a single, whole event.

Both forms are correct, and refer to the event in different ways. You could change from one to the other but you'd be talking in a slightly different way about the event.