I like video2x[1] for this, a nice simple CLI with lots of different options for different cases, (especially the anime upscalers) used it quite a bit, also played with realcugan-ncnn-vulkan[2] which has given me pretty great results.

[1]: https://github.com/k4yt3x/video2x [2]: https://github.com/nihui/realcugan-ncnn-vulkan