I love AI ... but pay for open source code?..... no.
U can get better result free.
https://github.com/nagadomi/waifu2x
(with Real-Sr option for real people not anime select the model models-DF2K_JPEG)
or use realsr-ncnn-vulkan win version 
https://github.com/nihui/realsr-ncnn-vulkan
also
Like remini for pics or vids 
https://colab.research.google.com/github/tg-bomze/DFDNet/blob/whole/DFDNet_Colab.ipynb
also if you have old pics
https://colab.research.google.com/drive/1NEm6AsybIiC5TwTU_4DqDkQO0nFRB-uA?usp=sharing#scrollTo=KvqDOPXnLmkl