You can drag & drop your file or folder into Easy convert then select your destination extension and press convert
You can also add your file(s) or folder(s) by right click to the destination files then select Easy Convert from context menu
Add your file to Easy Convert then select it, Press the split button
Enter the time you want to split at it and press OK.
Add your file to Easy Convert then select it, Press the cut button
Enter start and end time then press OK.