The adding steps are very simple, just some clicks, you can add the video files to convert quickly.
1. Download, install and lanuch the software, you can see the interface:
2. Click "Add" button, you will see the videos available in the popup dialog:
3. Select the videos you want to convert and click the "OK" button. Then all videos you selected will show in the File list as follows:
The software can only convert the videos playable on iTunes, If your video files don't exist in iTunes, this error prompt window comes out as follow: