Vess Stoytchev wrote:Thanks for this info. Interesting it is.
Well, some might call it 'pixel peeping' - what you are seeing there on the scopes is effectively an amplification of what's happening at the pixel level. The 1920 x 1080 checker pattern is made up of 5x5 pixel blocks so that every second border falls in the middle of a color sub-sampled region.
I searched for more information to explain why DNxHR_444 (and DNxHD_444) behaves that way. Best I could find was a Lift Gamma Gain forum post, referenced here:
https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=79163&start=50#p446056"DNx was optimized to be more visually lossless while ProRes to be more mathematically lossless. So DNx adds a slight blurring in some instances to tame artifacting and aliasing in the original image. This can cause regeneration problems, but you have to go like 8 generations to see it."Maybe so, but for my purposes, if I'm going to use an 'intermediate/exchange' export format I want it to be closer to mathematically lossless. I don't want intentional blurring and this behavior was evident in the first DNxHR_444 export of the checker pattern, not after multiple generations.
That's my perspective on this anyway. Others mileage might vary.
Vess Stoytchev wrote:@Bryan Worsley oh my, I have forgotten the days of VirtualDub. I'm downloading VirtualDub2 to check it out, thanks.
I think you'll find it somewhat more advanced than the original VirtualDub.