A few years back I downloaded a little program which
is very very easy to use and does the job great.
It is called Wondershare Filmora9.
At first, I just wanted a video-editor to make little "Film style GiFs"
but
as I quickly learned to use it without looking at a Tutorial, I began
doing alot more with this Filmora9.
It is a very cool video-editor and you can even remix sound on
it to make music videos or add music mixes into your videos.
You can use it to do HD quality stuff on it too.