And to be more specific, for non-realtime transcoding you want to use ESRGAN in VapourSynth with models from upscale.wiki. You generally want a denoiser in fron

And to be more specific, for non-realtime transcoding you want to use ESRGAN in VapourSynth with models from upscale.wiki. You generally want a denoiser in front of the AI model and a temporal softener behind it. This is quite a rabbit hole, and I can point to more specific filter setups if you want. For realtime, mpv shaders and mpc-be extensions linked above are good. TBH I havent done a subjective quality shootout between these in awhile. Smart TVs also have AI ASICs that can do a surprisingly good job. That + vapoursynth transcodes is what I lazily rely on these days.