I looked into upscaling for the original episodes of Police Squad. Paid a good chunk of money for an AI upscaler because I was too curious how good of a job it could do.
The results were not great. When there's too many different things impacting the quality of the source, the AI just can't do a great job. In the case of Police Squad DVD rips, they were low res and noisy.
When I eventually found a higher resolution Bluray version, I ran that through just to denoise it and got much better results. My understanding is that it also would have been able to do a good job upscaling given a source that wasn't noisy.
Maybe you can use a chain of models to handle both problems. I didn't try anything like that. Though I would expect the tool to have that as an option if it is something that worked well.
The results were not great. When there's too many different things impacting the quality of the source, the AI just can't do a great job. In the case of Police Squad DVD rips, they were low res and noisy.
When I eventually found a higher resolution Bluray version, I ran that through just to denoise it and got much better results. My understanding is that it also would have been able to do a good job upscaling given a source that wasn't noisy.
Maybe you can use a chain of models to handle both problems. I didn't try anything like that. Though I would expect the tool to have that as an option if it is something that worked well.