I use these to edit video from my camera, from DVD's and from my television.
OpenShot  will edit most but crashes if I try to edit WTV files from my windows television recordings.  It does edit VOB files and everything else.
ShotCut edits WTV, VOB and everything else I'v tried, it's a little more robust.
VSCD  edits everything too but I don't care for the confusing array of options.  It does come with a video screen capture and some other tools that are nice.

and there are 2 other programs that I use, one takes an AVI file and radically compresses it.   MeGui can compress an mpeg or avi about 10 times.  Handy for emailing or uploading to YouTube much quicker.
I have used Handbrake to convert a file but now I find ShotCut or one of the others better suited.

If you download one or all of these (because each has features I find useful at different times) go to YouTube and learn how to use them.  It won't take long if you're at all computer literate.