Python 连接音频文件并叠加在视频上

我试图编写一个程序，从一个文件夹中获取一组视频，对它们进行编译，然后从一个文件夹中获取另一组音频文件，并将它们连接起来，然后将组合的音频叠加在最终视频的顶部(希望有意义).我能够将视频处理成一个最终输出视频，但在组合音频时遇到了麻烦.下面我提供了与audio comp相关的两小段代码，我正在使用moviepy处理视频，并try 将其用于音频.

songDirectory = './songs/'
songList = []
songs = []
audioclip=''

def makeCompilation():
    for filename in os.listdir(songDirectory):
        f = os.path.join(songDirectory, filename)
        if os.path.isfile(f) and filename.endswith(".mp3"):
            audioclip = moviepy.editor.AudioFileClip(f)
            songList.append(filename)


    for song in os.listdir(songDirectory):
        c = os.path.join(songDirectory, song)
    audio_clips = moviepy.editor.AudioFileClip(c)
    audio_output = moviepy.editor.concatenate_audioclips(audio_clips)
    finalClip = concatenate_videoclips(videos, method="compose")
    final_duration = finalClip.duration    
    final_audio_output = audio_output.set_duration(final_duration)
    final_output= finalClip.set_audio(final_audio_output).fx(afx.audio_fadein, 3.0)


    audio_path = "./songs/tempaudiofile.m4a"

    #print(description)
    # Create compilation
    final_output.write_videofile(outputFile, threads=8, temp_audiofile=audio_path, remove_temp=True, codec="libx264", audio_codec="aac")

    return description

该程序似乎能够找到音频目录，但我需要能够使用操作系统.路径join(songDirectory，filename)直接指向每个mp3文件，所以我一直在处理它，直到我得到上面的代码.当我try 遍历songList时，正如所料，我得到了一个错误，说'str'不可编辑，还有其他错误，说'str'没有属性'duration'.基本上，我所需要做的就是迭代输入文件夹，并以任何方式组合文件.代码当前返回输出:

????Free Fredobagz x Aflacko x Flint type beat - 'Default_Dance' [prod. kah]-jro0v6ogZ0Y.mp4
225.05
Total Length: 225.05
225.05
Traceback (most recent call last):
  File "/Users/daddyK/Desktop/comp_ bot/make_compilation3.py", line 127, in <module>
makeCompilation(path = "./videos/",
  File "/Users/daddyK/Desktop/comp_ bot/make_compilation3.py", line 110, in makeCompilation
audio_output = moviepy.editor.concatenate_audioclips(audio_clips)
  File "/Users/daddyK/Library/Python/3.10/lib/python/site-packages/moviepy/audio/AudioClip.py", line 315, in concatenate_audioclips
durations = [c.duration for c in clips]
TypeError: 'AudioFileClip' object is not iterable

在这一点上，我有点困惑，所以如果有人能提供一些见解，我应该做什么来解决错误和/或如果我在代码方面朝着正确的方向前进，我将不胜感激！Sorry if the code doesn't make any sense I'll post the whole .py file if needed