Originally Posted by music_to_my_ear
" I would scrap the receiver processing to 24p as it's somewhat pointless as cfraser pointed out above. "
Is the denons vp really that bad? I thought it was a top tier chip?
You misunderstand. It's not that the VP in the AVR is crappy, it's that the damage has already been done before it ever gets to the VP.
Think about what's happening. You are taking the original 480i source off the disc, with unknown cadence (probably 3:2 film but could be true 60i interlaced video, or worse a mix) and then the player is creating a progressive signal and scaling it to 1080p60. Now, this 1080p60 signal comes to the AVR, and you tell the AVR to squish those 60 frames into 24 frames. It doesn't matter how good the VP is in that final step, the deinterlacing has already been done, the scaling has already been done, all it is doing is trying to squish 60 into 24, but the problem is that 60 isn't an even multiple of 24, so the receiver will make decisions about how to squish the frames.... depending on what happened on the way, you could end up with a smooth result or a horrible result with stutters and judder.
The advantage with Blu-ray / HD-DVD is that you can feed a direct progressive 24 frame source to a display that can refresh in a direct multiple of 24 (e.g. 96hz or 120hz) so there is no need to interpolate or throw away frames. You have it in your head that this is "better" so you are trying to force this onto the DVD signals as well, but having it as 24 frames WON'T be better inherently, as there's a lot of stuff that can get messed up in that transition from 480i to 1080p24, and ESPECIALLY so if you have two different devices doing different pieces of the process.
Now, if you could find a player that could do a true "source direct" 480i off the SD DVD, and feed that signal via HDMI directly to the Denon, then the Denon's VP could do the full cadence recognition, deinterlacing, scaling, etc. up to 1080p/24, you'd probably get a better and more consistent result. But the irony is that "source direct" is a somewhat exotic feature, and the players that have it are likely to ALSO have built-in video processing that's as good or even better than the Denon! So if upscaling of SD DVD is really important to you, I'd probably just do some research and find a nice BDP that can do the whole shebang for you and just set it to output 1080p for all sources straight from the disc.
If you want to test what the Denon can do directly, most DVD players have component video output that can do the 480i straight off disc (you may have to disable progressive scan in the player). Then you can feed the 480i component signal to the Denon and have it do a full analog>HDMI conversion with scaling to 1080p/24. That's the cheapest way to fully utilize the Denon's VP while eliminating other variables, although of course you introduce an A/D conversion which in and of itself is an added step.