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Old 17th August 2019, 00:56   #86  |  Link
hello_hello
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Join Date: Mar 2011
Posts: 4,823
jpsdr,
I'm still not clear as to why I'm getting such bizarre results for XYZ conversions here. Am I doing something wrong?

I read your reply in the other thread and looked at the PDF, and I can see rec.601_525 line and rec.601_625 line are different, but the question I'm trying to get a simple answer to is... why do other programs such as ColorMatrix & DitherTools only have/require one version of rec.601?
I assume my understanding is wrong, but I thought once analogue PAL and NTSC are converted to digital, the colorimetry is the same, and therefore there's only one flavour of rec.601 required for colorimetry conversions. When I play an NTSC DVD encode, is the same colorimetry being used by MPC-HC to convert to RGB on playback as for a PAL DVD encode?

StvG said in the other thread I should be using rec.601_625 to convert between HD and SD etc in digital-land, and I don't doubt him, but once again I'm just after a simple explanation as to why.

Cheers.

Last edited by hello_hello; 17th August 2019 at 01:10.
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