Quote:
Originally Posted by Asmodian
Oh, I see. You moved the chroma back after making the video mod2 again! Seems so obvious now. Thanks. 
edit: it is somewhat embarrassing how well I feel I understand YV12, point resize, etc. and how bad I am at seeing the (in retrospect, at least) obvious consequences.  |
If it's any consolation, I don't think it's very 'obvious'.
I had to sit down with pencil and paper and trace out where the individual chroma pixels went at each stage of the process, getting quite confused until I was finally sure I had worked it out correctly.
Quote:
Originally Posted by zee944
Can the colorspace conversions and cropping/adding borders be separated with a well-thought out function? I mean, to do a color conversion anytime, adding/cropping anytime by any values without taking into account what and how happened before, yet keep the chroma intact all the time?
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I'm not sure if that's possible. I'll need to think about it for a while and my head still hurts after the earlier effort.