Format Factory - Best video, Audio, Picture Format Converter (Recommended)

Format Factory is multitask free Media converter with user friendly features. It allows image, audio and video files conversion to most commonly used formats. Moreover it can also reduce multimedia file sizes and support file formats that are used by portable devices. It can also repair damaged media files. It comprehensively serves considerable range of file formats in all forms of media (images, video, audio), burning from a CD or DVD. It also supports merging of files and addition of subtitles to converted video files. Format Factory also comes with a DVD ripper and has been translated to more than 50 different languages.

It offers: 
Conversion of All video files to MP4 / 3GP / MPG / AVI / WMV / FLV / SWF formats
Conversion of All Audio files to MP3 / WMA / AMR / OGG / AAC / WAV formats
Conversion of All Image files to JPG / BMP / PNG / TIF / ICO / GIF / TGA formats
Rip DVD to video file, Rip Music CD to audio file
MP4 files support iPod, iPhone, PSP, BlackBerry format
Supports RMVB, Watermark, AV Mux.
Supports all windows OS

Pros:
Ease of Use with good interaction
Amazing software with Simple Interface
Advanced users can do more

Cons:
Product does not edit any file
Cannot maintain ID3 Tags on M4a to MP3 Conversion

Download Link

This software is added after undergoing thorough testing and logical rejection of other available conversion softwares, This software is totally free and have better and more comprehensive options then other available free and even paid softwares.