Code for How to Concatenate Audio Files in Python Tutorial

concatenate_audio_moviepy.py

from moviepy.editor import concatenate_audioclips, AudioFileClip


def concatenate_audio_moviepy(audio_clip_paths, output_path):
    """Concatenates several audio files into one audio file using MoviePy
    and save it to `output_path`. Note that extension (mp3, etc.) must be added to `output_path`"""
    clips = [AudioFileClip(c) for c in audio_clip_paths]
    final_clip = concatenate_audioclips(clips)
    final_clip.write_audiofile(output_path)


if __name__ == "__main__":
    import argparse
    parser = argparse.ArgumentParser(description="Simple Audio file combiner using MoviePy library in Python")
    parser.add_argument("-c", "--clips", nargs="+",
                        help="List of audio clip paths")
    parser.add_argument("-o", "--output", help="The output audio file, extension must be included (such as mp3, etc.)")
    args = parser.parse_args()
    concatenate_audio_moviepy(args.clips, args.output)

concatenate_audio_wave.py

import wave

def concatenate_audio_wave(audio_clip_paths, output_path):
    """Concatenates several audio files into one audio file using Python's built-in wav module
    and save it to `output_path`. Note that extension (wav) must be added to `output_path`"""
    data = []
    for clip in audio_clip_paths:
        w = wave.open(clip, "rb")
        data.append([w.getparams(), w.readframes(w.getnframes())])
        w.close()
    output = wave.open(output_path, "wb")
    output.setparams(data[0][0])
    for i in range(len(data)):
        output.writeframes(data[i][1])
    output.close()


if __name__ == "__main__":
    import argparse
    parser = argparse.ArgumentParser(description="Simple Audio file combiner using wave module in Python")
    parser.add_argument("-c", "--clips", nargs="+",
                        help="List of audio clip paths")
    parser.add_argument("-o", "--output", help="The output audio file, extension (wav) must be included")
    args = parser.parse_args()
    concatenate_audio_wave(args.clips, args.output)

concatenate_audio_pydub.py

from pydub import AudioSegment
from tqdm import tqdm
import os


def concatenate_audio_pydub(audio_clip_paths, output_path, verbose=1):
    """
    Concatenates two or more audio files into one audio file using PyDub library
    and save it to `output_path`. A lot of extensions are supported, more on PyDub's doc.
    """
    def get_file_extension(filename):
        """A helper function to get a file's extension"""
        return os.path.splitext(filename)[1].lstrip(".")

    clips = []
    # wrap the audio clip paths with tqdm if verbose
    audio_clip_paths = tqdm(audio_clip_paths, "Reading audio file") if verbose else audio_clip_paths
    for clip_path in audio_clip_paths:
        # get extension of the audio file
        extension = get_file_extension(clip_path)
        # load the audio clip and append it to our list
        clip = AudioSegment.from_file(clip_path, extension)
        clips.append(clip)

    final_clip = clips[0]
    range_loop = tqdm(list(range(1, len(clips))), "Concatenating audio") if verbose else range(1, len(clips))
    for i in range_loop:
        # looping on all audio files and concatenating them together
        # ofc order is important
        final_clip = final_clip + clips[i]
    # export the final clip
    final_clip_extension = get_file_extension(output_path)
    if verbose:
        print(f"Exporting resulting audio file to {output_path}")
    final_clip.export(output_path, format=final_clip_extension)


if __name__ == "__main__":
    import argparse
    parser = argparse.ArgumentParser(description="Simple Audio file combiner using PyDub library in Python")
    parser.add_argument("-c", "--clips", nargs="+",
                        help="List of audio clip paths")
    parser.add_argument("-o", "--output", help="The output audio file, extension must be included (such as mp3, etc.)")
    args = parser.parse_args()
    concatenate_audio_pydub(args.clips, args.output)