I noticed this in the closings of the show Limitless on Netflix in VR – the title is in a thin black font slowly scaling up on a white background, and the long stems noticeably change perceived thickness.
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Ffmpeg doesn’t do gamma correct downscaling, so reduced resolution videos will be a tiny bit darker than they should be, and high contrast animations can be subtly lumpy at the edges.
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Is it a bug or due to design choices? Makes me wonder if other alternatives fare any better.
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Yes, the libswscale library (on which the scale filter is based) was designed way before that. Try out the zscale filter utilizing the zimg library (https://github.com/sekrit-twc/zimg ), that should give better results.
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For the record, though, zimg is much more pedantic regarding knowing input/output colorspace parameters. And it will throw a weird error about not finding a path between input and output if things are left undefined/unset.
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Put a Peltier Cooler on a Voodoo and overclock it til it gets right \0_
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This is a complete pain with wireframe on a black background
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Yep, that is what you show people who are unconvinced that being gamma correct makes much of a difference.
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Is that another one of those space agency excuses why none of the photos are simple real photos?
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The incorrect presumption of linear color space may be the most pervasive error in graphics. It creeps in everywhere.
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