FormatFactory is one of the most comprehensive converters on the market today. It is capable of converting media files like video, images and audio. The program also allows subtitles embedding, video joining and cropping, and will let you edit pictures before converting them. It is available on all Windows Operating Systems.
FormatFactory is a freeware type program but you have to pay attention when installing it because it contains advertisement and it will try to install a toolbar and change your default search engine. You can download it for free from the official website.