DVDVideoSoft error while converting mpeg video files on iPhone

I wanted to convert a mpeg video file to a format that could be used in my iPhone 4. I used the software DVDVideoSoft to convert it but something went wrong. The software compresses the video to the point that everything looks really small. I tried converting it to flash but the video is stretched to 4:6 and I want it to have widescreen. Another thing also, when I try to import it to iPhone, it failed. I have tried fixing the problem myself by uninstalling it. I removed everything and then downloaded it again from the website. I reinstalled it to my computer but the problem still persists. Any idea how am I going to fix this?
