[Python] Moviepy: add audio to a video

I am trying to run the following code:

from moviepy.editor import *
videoclip = VideoFileClip("filename.mp4")
audioclip = AudioFileClip("audioname.mp3")

new_audioclip = CompositeAudioClip([videoclip.audio, audioclip])
videoclip.audio = new_audioclip
videoclip.write_videofile("new_filename.mp4")


but when I run it I got the following error:

Traceback (most recent call last):
File "C:/.../video.py", line 5, in <module>
new_audioclip = CompositeAudioClip([videoclip.audio, audioclip])
File "C:\...\venv\lib\site-packages\moviepy\audio\AudioClip.py", line 285, in __init__
ends = [c.end for c in self.clips]
File "C:\...\venv\lib\site-packages\moviepy\audio\AudioClip.py", line 285, in <listcomp>
ends = [c.end for c in self.clips]
AttributeError: 'NoneType' object has no attribute 'end'


Does anybody know how can I solve that?

Continue reading...