illusionLAB (6/24/2018)
Hey TDP,
Try rendering the exact same clip at 24 fps and 1280x720 and then bump it up to 1920x1080 (the time 'saved' could be put into more samples). It's kind of a 'trade secret' which is used far more often than you know - basically, raytraced CG is almost always 'too sharp' - so rendering slightly smaller and uprezzing introduces both filtering and softening (which is usually resharpened slightly). I've worked on high budget VFX shows that render in HD and uprez to 4K (and always at 23.976fps which is the standard for non-interlaced frames) - no one notices and the time/money saved is astronomical.
p.s. I wouldn't recommend this for iClone PBR renders as anti-aliasing is already too noticeable.Well, I tried this a few different ways, each at 720p, and it didn't come out good. I mean, it works at a point, but not to my satisfaction.
It looks like a blurry twinkly mess.
I guess if I really up the sample count then, yeah I can get a cleaner render faster @720p than if straight run @1080p, so I get the premise of what you are saying. But the cleanly-rendered frames, still, at this 720p pace, would be taking upwards of 12-14 seconds a frame or something, so just too long now.
So for me, any denoising on a 720p video looks too artifacty and the highlights look like twinkley blotchy artifacts.
Compared to a clean render @720p, I found here it's actually faster, for a comparable output, at 1080p with denoising.
The 24 FPS is a keeper though!