I've been enhancing some of the old videos at Downblouse Loving and am pleased with the results. I'm using Vmake AI:
https://vmake.ai/
After a lot of research and testing I've found that to be the best way to enhance old videos.
A lot of the old videos are 960 x 540 with a bit rate of 1800 kbps. I've not gone mad and tried to upscale them to 4K, though I have tested that idea out. I didn't like the results as the videos lost their realism and looked a bit waxy and fake. That's because the AI had do fill in so much detail to blow them up to 4K.
I've found a way to convert the old videos and for the file sizes not to be too much bigger.
Here are 3 videos that have been enhanced:
https://www.downblouseloving.com/tag/video-samples/
What do you think? Is anyone else considering doing this? I haven't got any feedback from the members yet but will be asking for some soon.