Why this program is failed to load files that I need?

You can add the files from computer to the program to start converting. However, when the loading process fails, you can try:

• First, you need to make sure that the file format is supported for FonePaw Video Converter Ultimate.
• Second, please make sure that the files on your computer are not damaged and can be used normally.
• Third, you can save your the files on local disc with a simple name which you can remember it easily, then check it if it can play on your computer well.