I find AVS for you a comprehensive package of av software at a very low price - 1 year licence for $39 or unlimited for $59. You can just buy the components individually but at this price . . .!:
Movavi Video Editor and VideoPad Video Editor. They support various video formats, such as MP4, AVI, WMV, MPV, etc. You can also add effects, crop, add audio to the video. Google them, you will find them really good.