Why exactly can’t you use hardware acceleration with an nvidia card? We have Arch Linux with a Quadro P400 and using the nvidia driver Tdarr runs super smoothly. The way to get all your content in x265 is just by decoding and encoding, which Tdarr, Handbrake etc can do. But it’s one stream per nvenc/nvdec at a time so it takes time.
I do not understand how in this day and age there are are people that just think 'I’ll just dump this here on the street "