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Old 28th March 2020, 21:57   #15  |  Link
poisondeathray
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Join Date: Sep 2007
Posts: 5,345
On a synthetic test clip (the one above, but there is animation, rotation, but it's just simple text motion)

Same thing 720x480 YV12 source => Resolve => Export v210 => Convert back to YV12

ConvertBits(8).ConvertToYV12(chromaresample="point")
[Parsed_psnr_4 @ 000000702506d280] PSNR y:71.482031 u:48.201779 v:48.396939 average:53.027946 min:52.964134 max:53.075222

Z_ConvertFormat(pixel_type="YV12", resample_filter="point")
[Parsed_psnr_4 @ 000000a5d07f7800] PSNR y:68.920585 u:61.097875 v:73.214861 average:66.519582 min:64.670853 max:67.972861

The U, V scores are much lower for the internal avs as expected with the known shifting

I'll try some real clips when I get a chance , but with synthetic test patterns it might be possible to figure out how it's interpeting the chroma and reverse it more closely

Last edited by poisondeathray; 28th March 2020 at 22:04.
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