I trained two person's face images.
I got great quality swap images in preview images.
However, when I Convert images, there are strange blur in the images' corner.
All the options are as default except two.
trainer : Realface
scale : 128
Looking at it more carefullly, please make sure that 1: You are feeding in the original frame, NOT THE EXTRACTED FACES to convert and 2: that you've removed any bad alignments, as that may be an alignment error where it thinks there are 2 faces in that image to convert.
That blur is in the original frame. You can see the edge of the swap in that image at the square edge there in the middle of the blur. Obstructions can be hard to deal with, and this one may require manual intervention to get working right.
Looking at it more carefullly, please make sure that 1: You are feeding in the original frame, NOT THE EXTRACTED FACES to convert and 2: that you've removed any bad alignments, as that may be an alignment error where it thinks there are 2 faces in that image to convert.