Avatarify lets users run realtime deepfakes on live video calls
I ran this on ubuntu 18.04. It took a little work to get around a small bug that will be squashed when the v412loopback library gets officially rebuilt but here is a solution
https://github.com/alievk/avatarify/issues/37#issuecomment-6...anyway, on a 4930k at 4.5 ghz i am seeing reasonable performance(~30fps) but minimal cuda utilization(titan pascal). 
The biggest issue is that you need a well lit, stationary face for it to properly map features of the jpg you are using to substitute for your face. Also the jpg needs clearly identifiable features. Even then, the amount of facial expression is subdued (for example closing your eyes is not properly processed).I seem to recall software about 10 years ago where you drew line segments of corresponding features on 2 images and the jpg was then mapped onto the video. It was more accurate and expressive than this is but did require time to set up.