Quote:
Originally Posted by hello_hello
I have a Bluray video. I re-encode it. I use no other filtering aside from colormatrix to change the colorimetry to rec.601.
(Of course normally I wouldn't do so unless I was downscaling to SD).
On playback I use a player that obeys the colorimetry info written to the video stream. I use the same TV/monitor each time.
The original Bluray video would look like this:
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
After I convert the colours, I'd tell x264 to write this:
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.601
The question was, how/why would they display differently?
I'm not sure how your references to subsampling apply.
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there will be NO color difference between these 2 copies