Freemake converter question

[Bongo boy]

Hi
I am trying to re-combine videos that I get here (which is simply the most amazing place I have ever been) without losing quality or altering the size much. I am experimenting with Freemake. The videos come out around 10 times the size when I set it to use the same settings as the original. I am afraid that dropping the qualities below original will make a difference('specially in the still frames and slo mo (grins). Has anyone figured out the best settings?
Thanks in advance.
Bongo

[CP]

use formatfactory.
you can choose small medium or large or even go into detail with encoding.
its free and will handle all formats.