For video conversion first download BlackBerry Video Converter software from DownloadFile.org or nidesoft.com.
And then follow the steps:
1. Start the program and Click 'Add' button to load the source file to be converted.
2. Then make settings like 'profile' to select the format of output video, video size and quality of video.
3. And at last to convert video format just click 'Convert' and it will be done in few minutes.