This is just a thought...
I haven't noticed feedback about the DPI resolution in each frame. Each RAW frame have 240dpi :o, and RGB resolution consist of 72dpi. Which means you can EASLY upscale resolution up to 4K with little to none IQ loss.
Here's a upscaled (1920 x 1280) PNG still sample from a 4K RED sequence: http://we.tl/2JT9is7EfI
IQ looks similar (i'll say a lot better) to h.264 but @ 4K resolution. This is just amazing. :D