Originally Posted by RapalloAV
Ive just picked up this whole story today that CMD on the NX series converts everything to 422 which I believe adds an artifact unless the input is set to 422, sorry if I have this wrong...
I use madvr with my NX9 and output from the PC in RGB 8bit which is what madshi recommends best for madvr, if I was using CMD with RGB 8bit, does it add the artifact or not?
Originally Posted by Soulnight
I am not sure the JVC is TRULY downconverting it to 4:2:2 because it it were, that pattern in the red and blue colour bar versions would be completely unreadable. I just tested this now on my HDTV putting it into true 4:2:2 mode and the QBF pattern is a lot worse. So thats not what is happening here completely.
I think the better explanation is as simple as this.
If you use CMD on the JVC's you will not get the true FULL benefit of any content at 4:4:4 chroma.
Something has to give somewhere, yeah the difference is minute and not super visible from a few feet away arguably, but you all spend a lot of $$$ to get that last few percent performance, and from where I am sitting, CMD is not an acceptable compromise in resolution (if the details are comprised of coloured pixels) to use on the 9500 or 9900 and definitely not on Woofers Z1..
I also still have a hunch you could find content at 4:2:2 where this would also still affect things, but I cant be bothered to look into it. Nigel seems to be of the strong opinion that 4:2:2 wont be affected, so perhaps he could find some content and prove it. the very fact that the QBF pattern is 'broken' in essence when using CMD On vs Off is enough for me.
Also, regarding my desktop PC, and my desktop environment, I can tell in about 1 second from any view distance that I am in 4:2:2 and not 4:4:4 its a very clear difference and loss of overall saturation in the icons etc, which woofers images clearly showed. His CMD off images shows MUCH more saturated Red, Green and Blue letters vs CMD On. I for one would prefer to have the power of full chroma up-sampling and gaining that tiny bit of added saturation in the image.
I am a person who has disdain for CMD in all forms anyway since I believe you should view the content in the frame rate the director intended rather than essentially watching 66% fake interpolated frames and only 33% frames which were actually filmed... But that's your prerogative. So its definitely a tough decision for those who like CMD or feel they need it...
At the end of the day the SHOULD just make a CMD that works in 4:4:4, how about that? I would not be glossing over it, scream it to the clouds! Make JVC fix it in the next models.