2. Add Video Files
2.1 Camera Roll
Run Video Converter App, tap the + button on the top left and choose to Import Videos from Camera Roll.
Note: Video Converter App requires access to your photos in order to read video from photo library. You need to go to Settings -> Privacy > Photos and turn on Converter.
All video clips in your Camera Roll, Photo Library or Photo Albums will be listed. You can choose and add any of them to the conversion queue.