Is it possible after extraction to do a manual retouch of the mask? like in DeepFaceLab you can manually do mask then retouch it after doing a mask training for best results. im asking because sometimes the mask is a bit weird on some faces especially it its a bit covered with hands or legs or something else. and if yes how?
Yes. You use the manual tool for this.
Hmm damn fixing 27k frames will be long. Oh may i ask what Tools>Mask do? And where to read about it?
and is it possible to train the mask like in DeepFaceLab as manually fixing 27k frames is hell
Tools/Mask is tool to re-mask your project.
Often it's quicker to extract your faces without a mask as you'll have to go through and delete the un-needed and false positive faces anyway, and/or add faces manually that were missed. Because of that you will have to go in and (re)mask the project. This is what the "mask" tool does. It also allows you to re-mask to other available masks.