upscaled 'look' plugin / down convert resolution effect

Looking for a plugin for After Effects or Premiere to lower the sharpness of footage.
I find digital footage these days is often too sharp and I prefer the softer look of a filmic image.
This screen grab is from an 8K RED file played back at 1/8 resolution in Red Player, which approaches the look i'm after.
I would love to find a way to easily 'downconvert' footage to simulate this look (sort of a DVD look with softer edges) without creating the pixelization effect that often occurs when simply up converting footage within an NLE.

Thus far i've been nesting my comps in a lower res sequence and then re-importing back into a 4k sequence, but this creates that undesired pixelization look. Anyone encountered any tools that desharpen footage in a more aesthetically pleasing manner?