I have a feeling that's not the best place to ask this question, and I would be grateful if someone could point me in the direction of a better one.
I have short handheld footage of a girl standing in front of a flower wall.
The ask is to lengthen her legs, so she appears a bit taller.
Since she does not move, I don't mind stretching the whole image from her waist down, but I don't know how to do it.
I can track her belt in the frame, but I have no idea how to stretch the footage from her waist down, not the rest.