[Cin] The best strategy to render yuv (mpeg, limited range) from yuvj (jpeg, full range)?

[Tarantas]

So, my sources are in yuvj, and my target (youtube) is yuv.
I want to find the best strategy to minimize color banding and maximize
dynamic range available.
My current settings for this are:
 - JPEG in "preferences";
 - RGBA-float in "format" (color correction in YUV leads to a lot of
   color banding).
The problem is: I couldn't render this RGBA-float into YUV. No matter
what render settings I use, it renders in full range. Putting
color_range=mpeg doesn't help, because it just flags the file to be in
limited range, leading to increased contrast of image.
So, I'm a little confused. What I am really supposed to do? Using
ColorSpace filter is not convenient with filter like histogram, for
example.