Thanks to
@Tana_vak , who discovered it for me a few days ago when he posted it here on the thread, I have been testing Topaz Video AI for a few days with the free version and I AM SHOCKED.
The free version is full featured and lets you convert large videos, but it adds a huge watermark in the center of the screen. It's useless to watch, but it's good to see the improvements.
I'm testing rescaling 4K to 8K and it looks better than a Fanza 8K movie. Most important, it increases the definition, it increases the bitrate and removes the dirt from the image, you no longer see noise or blur in the middle distance. The key is to use little AI, if you overdo it, it looks artificial.