app.py

import gradio as gr
import subprocess
import os
import ffmpeg
import pymedia.audio.acodec as acodec
import pymedia.muxer as muxer

def outputProducer(inputVideo):
    print(inputVideo)
    input_file = ffmpeg.input(inputVideo)
    input_file.output('audio.wav', acodec='wav').run()
    command2 = "ls"
    retVal = subprocess.check_output(command2)
    return retVal
demo = gr.Interface(fn=outputProducer,
                    inputs = [gr.Video()],
                    outputs= [gr.Textbox()],
                    title = 'Simplify')
demo.launch()