There are a lot of popular software on the market. Thank you for your information. I also know some practical softwares. I want to share to the people who come this nice website. These tools are designed for video conversion.
4Videosoft Sansa Video Converter
4Videosoft Mobile Video Converter
4Videosoft BlackBerry Video Converter
4Videosoft Archos Video Converter
4Videosoft iRiver Video Converter
4Videosoft Walkman Video Converter
4Videosoft Sony XPERIA Video Converter