Fixed the background so it actually works now. It turns out it was waaaay too big (file size/video dimensions). I wish .gifs worked, that would be so simple.
Scanline renderer worked this time! that was nice as it meant I could go back to my old ways of getting a render done in a super quick time. It also made everything whiter, removing most lighting and shadows and reducing the depth that the 3d render (mental ray) gave; which is nice and all, but not for this scene – there are too many solid objects and things built to a relatively realistic perspective. It also highlighted all of the problems with the textures even more…
The first render had such a distinct contrast between foreground and background. I thought that if I replaced the flat background with some 3d objects (from an older project) then I could get the two to blend together a little better. Admittedly the wrong thing to do, I want everything to be a bit ‘flatter’. Some technical issues have made those buildings look just as flat as the previous one. I just need to sort out the lighting to sort that out.
The contrast between 3d and 2d can certainly produce some interesting results, not just visually but also if used as some sort of narrative tool.
One more render with a bit of shadows around the buildings, maybe a higher resolution one too, just to compare.
Updated album of images - http://imgur.com/a/teAUo#0