Provide the 'codec' parameter in write_audiofile."

1

got this error.
an exception occurred: ValueError(“MoviePy couldn’t find the codec associated with the filename. Provide the ‘codec’ parameter in write_audiofile.”

2

I figured it out. This happens, if you don’t specify an extension in the output file name

3

I’m glad you figured it out. It is a bug anyway – the ‘codec’ parameter should have been set regardless of what the extension is.