The short answer is that you train a SAEHD model like normal and then export it as a .DFM file. If this doesn't make sense, go back to the tutorials forum and take a look at the Guide that is available to you.
DFM refers to the file extension and file format.
Originally (and AFAIK still now), DFL referred DeepFakeLabs, since there were multiple methods of creating "DeepFakes" (which in itself as become a generalized term referring to the use of DeepLearning methodologies to enhance or replace faces) where other methods/software do exist, it was used as a general shorthand term to specify which type of software you used to make DeepFakes, Specifically, it often referred to Iperovs github of DeepFakeLabs 2.0
If you can't find the right tutorial, then you're looking for the wrong thing, it's in the
main tutorial, It's been revised a number of times but instructions on how to export a .DFM file are in there. if you cant find it, use your browser's search function, though skipping to it is ill-advised. I'm not sure if it's in the colab one, but feel free to take a look
I'm not sure how you "spent hours looking" and what you did to look, but before trying to jump in directly to creating a DFM model, you should get the basics down first, otherwise most people will ignore your questions if you don't bother taking the time to go over the basic tutorial. If you had read it, you would've found it. I won't tell you where it is in the tutorial because it's something you'll want to read through if you're truly looking to make/use of DFL.
Forewarning, it's not going to be easy, and definitely not for the feint of heart.
Good luck
btw, we can see how much time you've spent online, if you didn't make an account during your hours long search, then I suppose I've helped you find your way ;D
