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My main video restoration project is 8mm camcorder tapes with a few VHS tapes. I also have MiniDV tapes that could use some love. I have experimented with Vapoursyth filters inside the Selur Hybrid software. A few months ago, I started using a dev version of Hybrid, which includes a lot of AI(?) upscalers. I found that most made my videos too cartoony looking. The only one that was good was RealESRGAN in the mode RealESR-general. I recently installed the newest version of Hybrid on another computer and discovered that it includes another AI(?) upscaler called RealCUGAN, which I used in the mode SE and with TTA enabled.
I haven't found very many discussions about RealESRGAN or RealCUGAN, and whether these upscalers make a lot of the rest of the filters unnecessary, such as the denoise filters. For instance, I found that when I used RealESRGAN, using the denoise filters in QTGMC didn't change the final video.
I have attached some images from a MiniDV tape that was upscaled with the default settings in Selur Hybrid Vapoursyth, RealCUGAN, and RealESRGAN. In my opinion, the RealESRGAN looks the best.
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