Hello! For use this one item u mast to installing ffmpeg with python. If u alr have this, u can read next information:
VAR: input_files - you must to add the file extension(as f. ext.) that you have | LINE: 13
LAST TEXT IN 16 LINE: u must set the f. ext. that you want to take
LINE 23: you must to set f. ext. in file.endswith() thet u you have for gotting only free-up files