Adding dialogues is easy, use Elevenlabs.io
Check my "Modern Familly" part 5 which I posted in December when I used the website.
Just a start but I know for sure soon we'll find better apps.
Yeah I remember your work, in fact, I have had used Elevenlabs.io in the past but never been satisfied cuz the voices tend to be monotone, I have used AI to generate the voice in the News anchor from one of my reworks, take a look:
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In my search looking for a software I have in mind, it come across this one:
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Looks promising, I mean, actualli THAT is what I need, Cloning the voice. I will make a test and tell you guys later how's going.