Is this the full code? Not running

[DIN05AUR]

Does this repo contain full length code? Or it is just the part of a code, because there are just few files (just 3 .py files) and when I tried running it, it shows error FILE_PATH = sys.argv[1]
RuntimeWarning: Couldn't find ffmpeg or avconv..........................IndexError: list index out of range

[Helias]

RuntimeWarning: Couldn't find ffmpeg or avconv... some libraries could use ffmpeg, be sure to have it installed.

Moreover, try to give as input a sample with only one channel
ffmpeg -i input.wav -ac 1 output.wav