Quote:
Originally Posted by katzenjoghurt
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colorprim=2 / transfer=2 / colormatrix=2
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There's a lot we don't know about your source, such as its bitdepth, frame size, encoder family, or colour tagging.
A conversion from any of those source states could introduce colour-shifting depending entirely on what specific process you're using, especially rounding errors when resizing or denoising, or even a bad source decoder. Heaps of variables.
However, given that your MediaInfo dump of the x265 encode shows "unknown" for all of the colour characteristics, I'd start my investigation there.