Hi Ed

I have used most of the Video editors at one time or another.

I am on Windows 7 and I use most of the Video file types with no problems.

One I would really recommend for what I believe is what you want is Magix Video Easy. It is cheap and very simple to use.

ttp://www.magix.com/gb/video-easy/detail/

Hope this helps

Cheers

MikeL2