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Old 1st August 2020, 14:09   #6  |  Link
Boulder
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Join Date: Mar 2002
Location: Finland
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Quote:
Originally Posted by foxyshadis View Post
Before you make a choice that will hugely impact both encoding time and storage space, just watch a few downsampled to 1080p and then upscaled again to see if you can tell. Some can, many can't, and there's not much point if you can't.
This. I use a method that utilizes the clever tool called Zopti to determine optimal (well, at least better than using the same values for all sources) parameters b and c for BicubicResize to downsample. There's a huge difference compared to just using Spline36 or Lanczos. For native 4K, I go for 1440p and upscaled 2K goes down to 1080p.
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