I understand the difference, which is why I said 'lower resolution, spatially and dynamically'. Are you saying definitively that chrominance is not encoded at

I understand the difference, which is why I said 'lower resolution, spatially and dynamically'. Are you saying definitively that chrominance is not encoded at lower spatial resolution? I also said it might be another cause of difference, not the cause. Anyone might want to look at http://en.wikipedia.org/wiki/4:2:2 http://en.wikipedia.org/wiki/4:2:2 before simply assuming I am talking nonsense.