view of scene an issue

I think you have zoomed out. The bit in the middle is what will be rendered. The darkened area around is out of shot. There is a scale drop down (bottom right corner?) - set it to "fit". If you use ALT + mouse wheel it does this sort of thing. Its useful to see a character off screen, but confusing when you don't use it often.

Mmm... seems odd. Did you try changing the "x" and "y" scale? Screenshot below.

If you still run into problems, try exporting your animation as a transparent PNG sequence, and then add the backdrop later in a video editor or something.