If i want my BD player to do the upscaling DVD's and Blu-rays. Do i go to Video/Output settings on the 4400 and turn Video Conversion to "off"? Or am i wrong about this and need to change something else?
I would set the Denon Video Conversion to Automatic.
I think others may set it to OFF.
Really no wrong answers.
I would set the Video Upscaling on the Sony BD player to 2160p.
So everything that outputs from the Sony BD player will be upscaled 2160p. Then the Denon will not have to do anything.
But for other sources that are 1080p or 720p, the Denon will Automatically upscale to 2160p.
BTW, I say "2160p" instead of "4K" because the BluRay, TV and most PJ resolution is 3840 x 2160p, so it's not really "4K" - it's actually 3.8K. LOL.