Combining an audio file with video file in python

def combine_audio(vidname, audname, outname, fps=25):
    import moviepy.editor as mpe
    my_clip = mpe.VideoFileClip(vidname)
    audio_background = mpe.AudioFileClip(audname)
    final_clip = my_clip.set_audio(audio_background)
    final_clip.write_videofile(outname,fps=fps)

source::https://www.programcreek.com/python/example/105718/moviepy.editor.VideoFileClip Example no 6

I got the answer of my Question, you can also try it and let me know if need further assistance

cmd = 'ffmpeg -y -i Audio.wav  -r 30 -i Video.h264  -filter:a aresample=async=1 -c:a flac -c:v copy av.mkv'
subprocess.call(cmd, shell=True)                                     # "Muxing Done
print('Muxing Done')