This is a real great working and easy to use software. I use it from a long time ago, and I could do everything what I want, like to convert a video/audio file to any other format, or size, while in the meantime I can change the aspect ratio, the bitrate and almost everything. The editor is an easy to use one, so you don't need any special skill to cut out the don't wanted parts.
Also, I suggest to take a look for the additional options, as with these you can even add subtitles to your videos, and so on. I recommend to try this solution!