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Old 29th March 2020, 01:02   #16  |  Link
Stereodude
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Join Date: Dec 2002
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Checking with YUV PNSR, z_lib (avsresize) is lossless 4:2:0 -> 4:2:2 -> 4:2:0 using point resize. The internal Avisynth functions are not lossless.

A quick test of a few other z_lib resize kernels show they are are not lossless.
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