I finished upscaling "Luck of the Draw" to a 960x1080 file and it looks okay. The Topaz HQ video preset ensures that it went from 576 to 1080 without losing what clarity it had. The SD blu-ray file, when scaled to HDTV, was fuzzier due to the TV and Android TV box stretch.
The thing about stretching the Season 2 - 5 SD blu-ray files to an HDTV scale: the quality of those video files is so good that any added fuzziness is quite low because the files are in such good quality and clarity that losing a little doesn't make much difference. Season 1, however, doesn't have much quality to lose.
With the HQ preset scaling Season 1 episodes to 1080, Topaz has done the stretch so the TV won't have to. Nothing is gained, but nothing is lost. The image isn't better, but watching it on an HDTV won't make it worse. I'm going to do the other S1 episodes too, if only for myself.
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I think Topaz might have further value as a noise and grain reduction process, but it's currently far too slow to be practical. Going back to CHUCK, a TV series shot on 16mm film: it is a very grainy looking show and every scene is covered in a pattern of static that's very solid and obstructive. Digital noise reduction is loathed by many film connoisseurs because it blurs out the underlying detail as well as the grain itself and many film restorationists urge viewers to enjoy and appreciate all the grain and never try to reduce it.
However, I imagine most of these purists aren't watching 16mm film projects made by relatively low budget TV shows. I don't intend to create new files for CHUCK, but just as an experiment, I ran a few shots from the pilot through Topaz's HQ preset and realized: Topaz's algorithm has created a 'denoised' version of CHUCK that has taken that grain and rebuilt it as pixel detail; the details within it are still present, but the random static over the image is gone.
This could be incredibly beneficial to 16mm restorations where you lose an obnoxious, unhelpful texture but the detail underneath is fully resolved as crisp pixel rendering.
DAWSON'S CREEK is currently available in HD on Netflix and as a 16mm film image, it's very noisy as well, but not to the degree of CHUCK, likely because the scan processing has lightly muted the grainy texture. However, Topaz could take DAWSON'S CREEK and re-render that those grains into pixel clarity.
The issue, unfortunately: my computer would have needed 28 hours to re-render the CHUCK pilot from grain to pixel. In contrast, I ran CHUCK's pilot through a denoise filter in Handbrake which simply applied a filter to lightly reduce the noise. 13 minutes later, CHUCK had a new file for the pilot: the static pattern of the noise was now a slightly diminished cloud, faded out, present but not prominent, and the underlying image had a slight loss of detail due to blurring out the noise; it was maybe 5 per cent less sharp.
I recognize that my computer is a aged gaming laptop (i7, SSD, 32GB of RAM, 4GB VRAM) and that this machine was considered a low grade machine even when I originally bought it. And that professional video editing computers would be so much faster. But I think most video distributors would go for the filter and a small, barely perceptible loss of sharpness since the AI option would take 129 times longer.
Topaz isn't currently practical for grain-to-pixel conversion on a 1080p scan of 16mm film, but maybe someday it'll get there.