tl;dr
My video conversion has an artifact on the forehead that kind of looks like hair, but is mostly a dark splotch.
I am not sure what is going on. The swaps during training look quite good. And, the preview tool shows decent swaps as well. However, when I duplicate all my settings from the preview tool, the conversion results in most of the faces having a dark splotch across the forehead of the face. Sometimes it looks like hair. I suspect this may be a masking issue (using Bisenet-Fp Face) where the hairline of Face B is bleeding over onto the the larger forehead of Face A.
My bigger concern is that I do not see this defect in the Preview Tool, so, it is very difficult to correct. Maybe I am missing something, but it seems like the Preview and the Convert are not working with the same data or possibly a different algorithm.? TBH, I have struggled with the Preview tool. Many of the adjustments seem to produce little to no effect on the swapped faces. But, a few of them do. I am a bit color-blind so maybe I just cannot see the shifts. But, I definitely see the problems in the converted video, so ???
I will play with my masks and may follow up if I find something significant.
P.S. - I attempted to convert using Bisenet-Fp Head, but I receive an error that the mask is not stored in the alignments file. I created my Alignments with Bisenet-Fp, and was even sure to regenerate the masks with the Mask Tool. But, I do not see an option for 'Face' or 'Head' anywhere except in the Convert panel. How does one generate Bisenet-Fp Head masks?