There are 3 repositories under anime-upscaling topic.
Real-time anime upscaling to 4k in mpv with Real-ESRGAN compact models
reav-ui - Upscale videos using R-ESRGAN
GUI application for Anime4K shaders which allows to save upscaled video to disk
Video player with the function of improving the quality of the hand-drawn image using the high-performance scaling algorithm of Anime4K