I have been searching and reading all I can find on this, but I am still a bit confused and hoping someone can help.
Lets say I have 4 videos to extract FaceB from. So I extract each one, and end up with all of them in a single output directory, and I have 4 separate alignment files.
So then I can run a Tools->Sort, and sort by faces, delete the faces I don't want, and then I can Remove Faces from each of the 4 alignment files 1 by 1.
Then my understanding is I can merge the alignment files.
But if these are Face B faces, then what is the purpose of the alignment files, my understanding is that for the purpose of Training, the alignments are stored in the PNG's of the faces files themselves, so what is the alignment file being used for?
Is the workflow I mention the right way? Or should I merge each of the alignment files first, and then remove missing?
Is it correct that for training, in order to align the faces, it uses the landmarks which are stored in the PNG files meta data? If so, what is the alignment file doing for training?
And for conversion, the only alignment file that matters is the alignment file of the video you are swapping into correct?