Many, many hours - depending on what you have for a system. These small clips can take several hours to render; my (unwarranted) assumption is that the machine

Many, many hours - depending on what you have for a system. These small clips can take several hours to render; my (unwarranted) assumption is that the machine being used likely has the equivalent (minimum) of a 1060 or 1070 (at least, that's what I'd use). Now - if you have the resources to own or build a multi-GPU machine with scads of RAM and the very best CPU - it will still take hours, but you might be able to get it down to "less than a day's worth". That's my best guess based on what I have seen so far and my own limited personal experience with deep learning and ML tech (nothing involving face swapping or such - more mundane things thru MOOCs I've taken in the past, using my 750ti SC as the GPU with tensorflow).