I do have the inpainting model for RV1.4 and I used that version a couple times, but I generally just used the normal version for the tests and I haven't compared the inpainting vs non-inpainting models yet. As for the inpainting mask I think I misunderstood what you meant. It does use an image mask in order to do the processing, but there isn't currently a way to upload custom masks for the frames themselves and I thought you were asking about that.