[jsb5717]

Picasa is a free, simple editor without a lot of bells and whistles. It might get you where you want to get.

I also have Movavi Photo Editor and Video Editor that I've used for drone footage. Not as comprehensive as much more expensive tools but a very nice toolbox for good editing.

The challenge for editing on a computer is color rendering, which will have a lot to do with your monitor and video card. What you see on the computer doesn't always match, exactly, what the actual output might be. It could take some experimenting and tweaking to get the output you actually want.