WonderFox Free HD Video Converter Factory proves itself to be one of the best free video converters on the market from multiple sides. It owns support for basically all types of video and audio formats as inputs and can also convert videos to all kinds of formats, for instance, 3GP to MP4 and MP4 to 3GP involving in this article. The concise and well-designed interface makes the whole conversion process easier. Meanwhile, it won't leave any watermark on the exported video or limit the conversion amounts. Multiple-functionality is another striking feature of Free HD Video Converter Factory. It can be used as not only a free and fast video converter, but a good video compressor, editor, and downloader. By installing this 3GP file converter, you're able to change video formats at your disposal and also use more useful features.