Python使用pydub实现M4A转MP3转换器

pip install pydub

import os
import wx
from pydub import AudioSegment

class AudioConverter(wx.Frame):
    def __init__(self):
        super().__init__(parent=None, title='M4A to MP3 Converter')
        panel = wx.Panel(self)

        self.source_dir = ''
        self.target_dir = ''

        # 布局
        self.source_button = wx.Button(panel, label='选择源文件夹')
        self.target_button = wx.Button(panel, label='选择目标文件夹')
        self.convert_button = wx.Button(panel, label='转换')
        self.open_button = wx.Button(panel, label='打开目标文件夹')

        self.source_button.Bind(wx.EVT_BUTTON, self.on_select_source)
        self.target_button.Bind(wx.EVT_BUTTON, self.on_select_target)
        self.convert_button.Bind(wx.EVT_BUTTON, self.on_convert)
        self.open_button.Bind(wx.EVT_BUTTON, self.on_open)

        vbox = wx.BoxSizer(wx.VERTICAL)
        vbox.Add(self.source_button, flag=wx.EXPAND|wx.ALL, border=5)
        vbox.Add(self.target_button, flag=wx.EXPAND|wx.ALL, border=5)
        vbox.Add(self.convert_button, flag=wx.EXPAND|wx.ALL, border=5)
        vbox.Add(self.open_button, flag=wx.EXPAND|wx.ALL, border=5)

        panel.SetSizer(vbox)
        self.Show()

    def on_select_source(self, event):
        with wx.DirDialog(self, "选择源文件夹") as dialog:
            if dialog.ShowModal() == wx.ID_OK:
                self.source_dir = dialog.GetPath()
                wx.MessageBox(f'选择的源文件夹: {self.source_dir}')

    def on_select_target(self, event):
        with wx.DirDialog(self, "选择目标文件夹") as dialog:
            if dialog.ShowModal() == wx.ID_OK:
                self.target_dir = dialog.GetPath()
                wx.MessageBox(f'选择的目标文件夹: {self.target_dir}')

    def on_convert(self, event):
        if not self.source_dir or not self.target_dir:
            wx.MessageBox('请先选择源文件夹和目标文件夹！')
            return

        for filename in os.listdir(self.source_dir):
            if filename.endswith('.m4a'):
                m4a_path = os.path.join(self.source_dir, filename)
                mp3_path = os.path.join(self.target_dir, f"{os.path.splitext(filename)[0]}.mp3")
                audio = AudioSegment.from_file(m4a_path, format='m4a')
                audio.export(mp3_path, format='mp3')

        wx.MessageBox('转换完成！')

    def on_open(self, event):
        if self.target_dir:
            os.startfile(self.target_dir)  # Windows
            # For Linux, use: subprocess.call(['xdg-open', self.target_dir])
            # For Mac, use: subprocess.call(['open', self.target_dir])
        else:
            wx.MessageBox('请先选择目标文件夹！')

if __name__ == '__main__':
    app = wx.App(False)
    frame = AudioConverter()
    app.MainLoop()